by | Sep 27, 2025
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
1 / 31
SECTION 1. IDENTIFICATION
Trade name
: NOROX
MEKP-925 RED
Manufacturer or supplier’s details
Company name of supplier
: United Initiators, Inc.
Address
: 555 Garden Street
Elyria OH 44035 USA
Telephone
: +1-440-323-3112
Telefax
: +1-440-323-2659
Emergency telephone
: CHEMTREC US (24h): +1-800-424-9300
CHEMTREC WORLD (24h): +1-703-527-3887
E-mail address of person
responsible for the SDS
: cs-initiators.nafta@united-in.com
Recommended use of the chemical and restrictions on use
Recommended use
: Hardener
SECTION 2. HAZARDS IDENTIFICATION
GHS classification in accordance with the OSHA Hazard Communication Standard (29 CFR
1910.1200)
Flammable liquids
: Category 4
Organic peroxides
: Type D
Acute toxicity (Oral)
: Category 4
Acute toxicity (Inhalation)
: Category 4
Skin corrosion
: Category 1B
Serious eye damage
: Category 1
Reproductive toxicity
: Category 2
Short-term (acute) aquatic
hazard
: Category 2
GHS label elements
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
2 / 31
Hazard pictograms
:
Signal Word
: Danger
Hazard Statements
: H227 Combustible liquid.
H242 Heating may cause a fire.
H302 + H332 Harmful if swallowed or if inhaled.
H314 Causes severe skin burns and eye damage.
H361 Suspected of damaging fertility or the unborn child.
H401 Toxic to aquatic life.
Precautionary Statements
:
Prevention:
P201 Obtain special instructions before use.
P202 Do not handle until all safety precautions have been read
and understood.
P210 Keep away from heat/ sparks/ open flames/ hot surfaces.
No smoking.
P220 Keep/Store away from clothing/ strong acids, bases,
heavy metal salts and other reducing substances /combustible
materials.
P234 Keep only in original container.
P261 Avoid breathing mist or vapors.
P264 Wash skin thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P271 Use only outdoors or in a well-ventilated area.
P273 Avoid release to the environment.
P280 Wear protective gloves/ protective clothing/ eye protection/
face protection.
Response:
P301 + P312 + P330 IF SWALLOWED: Call a POISON
CENTER/ doctor if you feel unwell. Rinse mouth.
P301 + P330 + P331 IF SWALLOWED: Rinse mouth. Do NOT
induce vomiting.
P303 + P361 + P353 IF ON SKIN (or hair): Take off immediately
all contaminated clothing. Rinse skin with water/ shower.
P304 + P340 + P310 IF INHALED: Remove person to fresh air
and keep comfortable for breathing. Immediately call a POISON
CENTER/ doctor.
P305 + P351 + P338 + P310 IF IN EYES: Rinse cautiously with
water for several minutes. Remove contact lenses, if present
and easy to do. Continue rinsing. Immediately call a POISON
CENTER/ doctor.
P308 + P313 IF exposed or concerned: Get medical advice/
attention.
P363 Wash contaminated clothing before reuse.
P370 + P378 In case of fire: Use water spray, alcohol-resistant
foam, dry chemical or carbon dioxide to extinguish.
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
3 / 31
Storage:
P405 Store locked up.
P410 Protect from sunlight.
P411 + P235 Store at temperatures not exceeding < 38 C/ <
100 F. Keep cool.
P420 Store away from other materials.
Disposal:
P501 Dispose of contents/ container to an approved waste dis-
posal plant.
Other hazards
None known.
SECTION 3. COMPOSITION/INFORMATION ON INGREDIENTS
Substance / Mixture
: Mixture
Chemical nature
: Organic Peroxide
Liquid
Components
Chemical name CAS-No. Concentration (% w/w)
dimethyl phthalate 131-11-3
>= 40 – < 45
2-Butanone, peroxide 1338-23-4
>= 30 – < 35
Trimethylpentanediol isobutyrate 6846-50-0
>= 15 – < 20
Butanone 78-93-3
>= 1 – < 5
Hydrogen peroxide 7722-84-1
>= 1 – < 5
2-Naphthalenol, 1-[2-[4-(2-
phenyldiazenyl)phenyl]diazenyl]-, ar-
heptyl ar',ar''-Me derivs.
92257-31-3
>= 0.1 – < 1
Actual concentration is withheld as a trade secret
SECTION 4. FIRST AID MEASURES
General advice
: Take off contaminated clothing and shoes immediately.
Call a physician immediately.
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
4 / 31
Never give anything by mouth to an unconscious person.
If unconscious, place in recovery position and seek medical
advice.
Move out of dangerous area.
Show this material safety data sheet to the doctor in
attendance.
Do not leave the victim unattended.
Symptoms of poisoning may appear several hours later.
If inhaled
: Administer oxygen if breathing is difficult or cyanosis is
observed.
Call a physician immediately.
If breathed in, move person into fresh air.
If not breathing, give artificial respiration.
Respiratory tract burning possible if aerosols are inhaled.
Call a physician or poison control center immediately.
If unconscious, place in recovery position and seek medical
advice.
Keep respiratory tract clear.
In case of skin contact
: If symptoms persist, call a physician.
Immediate medical treatment is necessary as untreated
wounds from corrosion of the skin heal slowly and with
difficulty.
In case of contact, immediately flush skin with plenty of water
for at least 15 minutes while removing contaminated clothing
and shoes.
Wash contaminated clothing before re-use.
If on skin, rinse well with water.
If on clothes, remove clothes.
In case of eye contact
: Small amounts splashed into eyes can cause irreversible
tissue damage and blindness.
In the case of contact with eyes, rinse immediately with plenty
of water and seek medical advice.
Continue rinsing eyes during transport to hospital.
Remove contact lenses.
Protect unharmed eye.
Keep eye wide open while rinsing.
If eye irritation persists, consult a specialist.
If swallowed
: Call a physician immediately.
Rinse mouth thoroughly with water.
Keep respiratory tract clear.
Do NOT induce vomiting.
If symptoms persist, call a physician.
Most important symptoms
and effects, both acute and
delayed
: Harmful if swallowed or if inhaled.
Causes serious eye damage.
Suspected of damaging fertility or the unborn child.
Causes severe burns.
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
5 / 31
Protection of first-aiders
: First Aid responders should pay attention to self-protection
and use the recommended protective clothing
Notes to physician
: Treat symptomatically and supportively.
SECTION 5. FIRE-FIGHTING MEASURES
Suitable extinguishing media
: Water spray jet
Alcohol-resistant foam
Carbon dioxide (CO2)
Dry chemical
Unsuitable extinguishing
media
: High volume water jet
Specific hazards during fire
fighting
: Risk of explosion if heated under confinement.
Possible emission of gaseous decomposition products may
lead to a dangerous pressure build-up.
Avoid confinement.
Contact with incompatible materials or exposure to
temperatures exceeding SADT may result in a self-
accelerating decomposition reaction with release of flammable
vapors which may auto-ignite.
The product burns violently.
Flash back possible over considerable distance.
Do not allow run-off from fire fighting to enter drains or water
courses.
Vapors may form explosive mixtures with air.
Cool closed containers exposed to fire with water spray.
Specific extinguishing meth-
ods
: Do not use a solid water stream as it may scatter and spread
fire.
Remove undamaged containers from fire area if it is safe to do
so.
Use water spray to cool unopened containers.
Further information : Use extinguishing measures that are appropriate to local
circumstances and the surrounding environment.
Use a water spray to cool fully closed containers.
Collect contaminated fire extinguishing water separately. This
must not be discharged into drains.
Fire residues and contaminated fire extinguishing water must
be disposed of in accordance with local regulations.
Special protective equipment
for fire-fighters
: Wear self-contained breathing apparatus for firefighting if
necessary.
Use personal protective equipment.
SECTION 6. ACCIDENTAL RELEASE MEASURES
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
6 / 31
Personal precautions, protec-
tive equipment and emer-
gency procedures
: Follow safe handling advice and personal protective
equipment recommendations.
Beware of vapors accumulating to form explosive
concentrations. Vapors can accumulate in low areas.
Use personal protective equipment.
Remove all sources of ignition.
Never return spills in original containers for re-use.
Treat recovered material as described in the section "Disposal
considerations".
Environmental precautions
: Prevent product from entering drains.
Prevent further leakage or spillage if safe to do so.
If the product contaminates rivers and lakes or drains inform
respective authorities.
Methods and materials for
containment and cleaning up
: Contact with incompatible substances can cause
decomposition at or below SADT.
Clear spills immediately.
Suppress (knock down) gases/vapors/mists with a water spray
jet.
To clean the floor and all objects contaminated by this
material, use plenty of water.
Soak up with inert absorbent material.
Isolate waste and do not reuse.
Non-sparking tools should be used.
Local or national regulations may apply to releases and
disposal of this material, as well as those materials and items
employed in the cleanup of releases. You will need to
determine which regulations are applicable.
SECTION 7. HANDLING AND STORAGE
Technical measures
: See Engineering measures under EXPOSURE
CONTROLS/PERSONAL PROTECTION section.
Advice on protection against
fire and explosion
: Take necessary action to avoid static electricity discharge
(which might cause ignition of organic vapors).
Keep away from heat and sources of ignition.
Use only explosion-proof equipment.
Keep away from open flames, hot surfaces and sources of
ignition.
Keep away from combustible material.
Do not spray on a naked flame or any incandescent material.
Advice on safe handling
: Open drum carefully as content may be under pressure.
Protect from contamination.
Do not swallow.
Do not breathe vapors/dust.
Avoid exposure - obtain special instructions before use.
Avoid contact with skin and eyes.
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
7 / 31
Avoid formation of aerosol.
Take precautionary measures against static discharges.
Never return any product to the container from which it was
originally removed.
Provide sufficient air exchange and/or exhaust in work rooms.
Avoid confinement.
Keep away from heat, hot surfaces, sparks, open flames and
other ignition sources. No smoking.
Smoking, eating and drinking should be prohibited in the
application area.
Wash thoroughly after handling.
For personal protection see section 8.
Conditions for safe storage
: Store in original container.
Keep containers tightly closed in a cool, well-ventilated place.
Store in cool place.
Keep in a well-ventilated place.
Contamination may result in dangerous pressure increases -
closed containers may rupture.
Observe label precautions.
Store in accordance with the particular national regulations.
Avoid impurities (e.g. rust, dust, ash), risk of decomposition.
Electrical installations / working materials must comply with
the technological safety standards.
Containers which are opened must be carefully resealed and
kept upright to prevent leakage.
Materials to avoid
: Keep away from combustible materials.
Keep away from strong acids, bases, heavy metal salts and
other reducing substances.
Recommended storage tem-
perature
: < 38 C
< 100 F
Further information on stor-
age stability
: Stable under recommended storage conditions.
SECTION 8. EXPOSURE CONTROLS/PERSONAL PROTECTION
Ingredients with workplace control parameters
Components CAS-No. Value type
(Form of
exposure)
Control parame-
ters / Permissible
concentration
Basis
dimethyl phthalate 131-11-3 TWA 5 mg/m3 ACGIH
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
8 / 31
TWA 5 mg/m3 NIOSH REL
TWA 5 mg/m3 OSHA Z-1
TWA 5 mg/m3 OSHA P0
2-Butanone, peroxide 1338-23-4 C 0.2 ppm ACGIH
C 0.2 ppm
1.5 mg/m3
NIOSH REL
C 0.7 ppm
5 mg/m3
OSHA P0
Butanone 78-93-3 TWA 200 ppm ACGIH
STEL 300 ppm ACGIH
TWA 200 ppm
590 mg/m3
NIOSH REL
ST 300 ppm
885 mg/m3
NIOSH REL
TWA 200 ppm
590 mg/m3
OSHA Z-1
TWA 200 ppm
590 mg/m3
OSHA P0
STEL 300 ppm
885 mg/m3
OSHA P0
Hydrogen peroxide 7722-84-1 TWA 1 ppm ACGIH
TWA 1 ppm
1.4 mg/m3
NIOSH REL
TWA 1 ppm
1.4 mg/m3
OSHA Z-1
TWA 1 ppm
1.4 mg/m3
OSHA P0
Biological occupational exposure limits
Components CAS-No. Control
parameters
Biological
specimen
Sam-
pling
time
Permissible
concentra-
tion
Basis
Butanone 78-93-3 methyl ethyl
ketone
Urine End of
shift (As
soon as
possible
after
exposure
ceases)
2 mg/l ACGIH
BEI
Engineering measures : Minimize workplace exposure concentrations.
Personal protective equipment
Respiratory protection
: In the case of dust or aerosol formation use respirator with an
approved filter.
Filter type
: ABEK-filter
Use NIOSH approved respiratory protection.
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
9 / 31
Hand protection
Material : butyl-rubber
Break through time : <= 480 min
Glove thickness : 0.47 mm
Material : Nitrile rubber
Break through time : < 30 min
Glove thickness : 0.4 mm
Remarks
: The data about break through time/strength of material are
standard values! The exact break through time/strength of
material has to be obtained from the producer of the
protective glove. Choose gloves to protect hands against
chemicals depending on the concentration and quantity of the
hazardous substance and specific to place of work.
For special applications, we recommend clarifying the
resistance to chemicals of the aforementioned protective
gloves with the glove manufacturer. Wash hands before
breaks and at the end of workday.
Eye protection
: Ensure that eyewash stations and safety showers are close
to the workstation location.
Please follow all applicable local/national requirements when
selecting protective measures for a specific workplace.
Always wear eye protection when the potential for inadvertent
eye contact with the product cannot be excluded.
Tightly fitting safety goggles
Please wear suitable protective goggles. Also wear face
protection if there is a splash hazard.
Skin and body protection
: Select appropriate protective clothing based on chemical
resistance data and an assessment of the local exposure
potential.
Additional body garments should be used based upon the
task being performed (e.g., sleevelets, apron, gauntlets,
disposable suits) to avoid exposed skin surfaces.
Wear as appropriate:
Flame retardant antistatic protective clothing.
Protective measures
: The type of protective equipment must be selected according
to the concentration and amount of the dangerous substance
at the specific workplace.
Hygiene measures
: Avoid contact with skin, eyes and clothing.
Keep away from food and drink.
When using do not eat or drink.
When using do not smoke.
Wash hands before breaks and immediately after handling
the product.
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
10 / 31
SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES
Appearance
: liquid
Color
: red
Odor
: slight
pH
: Not applicable
Melting point/range
: No data available
Boiling point/boiling range
: not determined
Flash point
: 76 C
Method: closed cup
Evaporation rate
: No data available
Flammability (solid, gas)
: Not applicable
Self-ignition : The substance or mixture is not classified as self heating. The
substance or mixture is not classified as pyrophoric.
Upper explosion limit / Upper
flammability limit
: No data available
Lower explosion limit / Lower
flammability limit
: No data available
Vapor pressure
: No data available
Relative vapor density
: > 1
Density
: 1.1 g/cm3
Solubility(ies)
Water solubility
: soluble
Partition coefficient: n-
octanol/water
: No data available
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
11 / 31
Self-Accelerating decomposi-
tion temperature (SADT)
: 60 C
SADT-Self Accelerating Decomposition Temperature. Lowest
temperature at which the tested package size will undergo a
self-accelerating decomposition reaction.
Viscosity
Viscosity, dynamic
: No data available
Viscosity, kinematic
: not determined
Oxidizing properties
: The substance or mixture is not classified as oxidizing.
Organic peroxide
SECTION 10. STABILITY AND REACTIVITY
Reactivity
: Stable under recommended storage conditions.
Heating may cause a fire or explosion.
Chemical stability
: Stable under recommended storage conditions.
No decomposition if stored normally.
Possibility of hazardous reac-
tions
: Vapors may form explosive mixture with air.
Conditions to avoid
: Protect from contamination.
Contact with incompatible substances can cause
decomposition at or below SADT.
Heat, flames and sparks.
Avoid confinement.
Incompatible materials
: Accelerators, strong acids and bases, heavy metals and
heavy metal salts, reducing agents
Hazardous decomposition
products
: Irritant, caustic, flammable, noxious/toxic gases and vapours
can develop in the case of fire and decomposition
SECTION 11. TOXICOLOGICAL INFORMATION
Acute toxicity
Harmful if swallowed or if inhaled.
Product:
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
12 / 31
Acute oral toxicity
: Acute toxicity estimate: 1,404 mg/kg
Method: Calculation method
Acute inhalation toxicity
: Acute toxicity estimate: 4.29 mg/l
Exposure time: 4 h
Test atmosphere: dust/mist
Method: Calculation method
Acute dermal toxicity
: Acute toxicity estimate: > 5,000 mg/kg
Method: Calculation method
Components:
dimethyl phthalate:
Acute oral toxicity
: LD50 (Rat): > 5,000 mg/kg
Acute inhalation toxicity
: (Rat): > 10.4 mg/l
Exposure time: 6 h
Test atmosphere: vapor
Remarks: No mortality observed at this dose.
Acute dermal toxicity
: LD50 (Rabbit): > 12,000 mg/kg
2-Butanone, peroxide:
Acute oral toxicity
: Acute toxicity estimate: 500 mg/kg
Method: Expert judgment
Acute inhalation toxicity
: Acute toxicity estimate: 1.5 mg/l
Exposure time: 4 h
Test atmosphere: dust/mist
Method: Expert judgment
Assessment: The component/mixture is moderately toxic after
short term inhalation.
Remarks: Based on data from similar materials
Acute dermal toxicity
: Acute toxicity estimate: 2,500 mg/kg
Method: Expert judgment
Trimethylpentanediol isobutyrate:
Acute oral toxicity
: LD50 (Rat): > 2,000 mg/kg
Method: Expert judgment
Assessment: The substance or mixture has no acute oral tox-
icity
Acute inhalation toxicity
: LCLo (Rat): > 0.12 mg/l
Exposure time: 6 h
Test atmosphere: vapor
Method: Expert judgment
Assessment: The substance or mixture has no acute inhala-
tion toxicity
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
13 / 31
Remarks: No mortality observed at this dose.
Acute dermal toxicity
: LD50 (Guinea pig): > 2,000 mg/kg
Method: Expert judgment
Assessment: The substance or mixture has no acute dermal
toxicity
Butanone:
Acute oral toxicity
: LD50 (Rat): 2,193 mg/kg
Method: OECD Test Guideline 423
Acute inhalation toxicity
: Remarks: No data available
Acute dermal toxicity
: LD50 (Rabbit): > 5,000 mg/kg
Method: OECD Test Guideline 402
Remarks: Based on available data, the classification criteria
are not met.
Hydrogen peroxide:
Acute oral toxicity
: LD50 (Rat, male and female): 431 mg/kg
Method: Expert judgment
Assessment: The component/mixture is moderately toxic after
single ingestion.
Acute inhalation toxicity
: Acute toxicity estimate: 1.5 mg/l
Exposure time: 4 h
Test atmosphere: dust/mist
Assessment: The component/mixture is moderately toxic after
short term inhalation.
Remarks: Based on harmonised classification in EU regulation
1272/2008, Annex VI
Acute dermal toxicity
: LD50 (Rabbit): 9,200 mg/kg
Remarks: No adverse effect has been observed in acute tox-
icity tests.
2-Naphthalenol, 1-[2-[4-(2-phenyldiazenyl)phenyl]diazenyl]-, ar-heptyl ar’,ar”-Me derivs.:
Acute oral toxicity
: LD50 (Rat, male and female): > 5,000 mg/kg
Skin corrosion/irritation
Causes severe burns.
Product:
Remarks : Extremely corrosive and destructive to tissue.
Components:
dimethyl phthalate:
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
14 / 31
Species : Rabbit
Method : Draize Test
Result : No skin irritation
2-Butanone, peroxide:
Species : Rabbit
Result : Causes burns.
Trimethylpentanediol isobutyrate:
Species : Guinea pig
Exposure time : 24 h
Result : No skin irritation
Remarks : Based on available data, the classification criteria are not met.
Butanone:
Species : Rabbit
Assessment : Repeated exposure may cause skin dryness or cracking.
Method : OECD Test Guideline 404
Result : No skin irritation
Hydrogen peroxide:
Result : Corrosive after 3 minutes or less of exposure
2-Naphthalenol, 1-[2-[4-(2-phenyldiazenyl)phenyl]diazenyl]-, ar-heptyl ar’,ar”-Me derivs.:
Species : Rabbit
Method : OECD Test Guideline 404
Result : No skin irritation
Serious eye damage/eye irritation
Causes serious eye damage.
Product:
Remarks : May cause irreversible eye damage.
Components:
dimethyl phthalate:
Species : Rabbit
Result : No eye irritation
Method : OECD Test Guideline 405
2-Butanone, peroxide:
Result : Irreversible effects on the eye
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
15 / 31
Trimethylpentanediol isobutyrate:
Species : Rabbit
Result : No eye irritation
Exposure time : 24 h
Butanone:
Species : Rabbit
Result : Eye irritation
Method : OECD Test Guideline 405
Hydrogen peroxide:
Result : Irreversible effects on the eye
Remarks : Hydrogen peroxide (H2O2), 35%
2-Naphthalenol, 1-[2-[4-(2-phenyldiazenyl)phenyl]diazenyl]-, ar-heptyl ar’,ar”-Me derivs.:
Species : Rabbit
Result : No eye irritation
Method : OECD Test Guideline 405
Respiratory or skin sensitization
Skin sensitization
Not classified due to lack of data.
Respiratory sensitization
Not classified due to lack of data.
Components:
dimethyl phthalate:
Species : Mouse
Method : OECD Test Guideline 429
Result : Does not cause skin sensitization.
2-Butanone, peroxide:
Species : Guinea pig
Method : OECD Test Guideline 406
Result : Does not cause skin sensitization.
Assessment : Harmful if swallowed., Harmful if inhaled.
Trimethylpentanediol isobutyrate:
Species : Guinea pig
Result : Does not cause skin sensitization.
Butanone:
Routes of exposure : Skin contact
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
16 / 31
Species : Guinea pig
Method : OECD Test Guideline 406
Result : Does not cause skin sensitization.
2-Naphthalenol, 1-[2-[4-(2-phenyldiazenyl)phenyl]diazenyl]-, ar-heptyl ar’,ar”-Me derivs.:
Test Type : Buehler Test
Species : Guinea pig
Result : Did not cause sensitization on laboratory animals.
Germ cell mutagenicity
Not classified due to lack of data.
Components:
dimethyl phthalate:
Genotoxicity in vitro
: Method: OECD Test Guideline 471
Result: negative
Method: OECD Test Guideline 473
Result: negative
Method: OECD Test Guideline 476
Result: positive
Genotoxicity in vivo
: Test Type: Chromosomal aberration
Species: Rat
Application Route: Intraperitoneal
Result: negative
Test Type: Micronucleus test
Species: Mouse
Application Route: Intraperitoneal injection
Result: negative
2-Butanone, peroxide:
Genotoxicity in vitro
: Method: OECD Test Guideline 473
Result: negative
Method: OECD Test Guideline 471
Result: negative
Method: OECD Test Guideline 476
Result: negative
Trimethylpentanediol isobutyrate:
Genotoxicity in vitro
: Test Type: In vitro mammalian cell gene mutation test
Method: OECD Test Guideline 476
Result: negative
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
17 / 31
Test Type: Ames test
Method: Regulation (EC) No. 440/2008, Annex, B.13/14
(Ames test)
Result: negative
Test Type: Chromosome aberration test in vitro
Method: OECD Test Guideline 473
Result: negative
Butanone:
Genotoxicity in vitro
: Method: OECD Test Guideline 471
Result: negative
Method: OECD Test Guideline 476
Result: negative
Method: OECD Test Guideline 473
Result: negative
Genotoxicity in vivo
: Species: Mouse
Application Route: Intraperitoneal
Method: OECD Test Guideline 474
Result: negative
Hydrogen peroxide:
Genotoxicity in vitro
: Test Type: Bacterial reverse mutation assay (AMES)
Result: negative
positive
Remarks: Information taken from reference works and the
literature.
Test Type: Chromosome aberration test in vitro
Method: OECD Test Guideline 473
Result: positive
Remarks: Information taken from reference works and the
literature.
Genotoxicity in vivo
: Test Type: Mammalian erythrocyte micronucleus test (in vivo
cytogenetic assay)
Species: Mouse (male and female)
Method: OECD Test Guideline 474
Result: negative
Remarks: Hydrogen peroxide (H2O2), 35%
Germ cell mutagenicity –
Assessment
: Based on available data, the classification criteria are not met.
2-Naphthalenol, 1-[2-[4-(2-phenyldiazenyl)phenyl]diazenyl]-, ar-heptyl ar’,ar”-Me derivs.:
Genotoxicity in vitro : Test Type: Chromosome aberration test in vitro
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
18 / 31
Metabolic activation: with and without metabolic activation
Method: OECD Test Guideline 473
Result: negative
Genotoxicity in vivo
: Method: OECD Test Guideline 474
Result: Equivocal
Carcinogenicity
Not classified due to lack of data.
Components:
dimethyl phthalate:
Species : Rat
Application Route : Skin contact
Method : OECD Test Guideline 451
Result : negative
Remarks : Based on data from similar materials
2-Butanone, peroxide:
Remarks : This information is not available.
Hydrogen peroxide:
Carcinogenicity – Assess-
ment
: Carcinogenicity classification not possible from current data.
IARC No ingredient of this product present at levels greater than or equal to 0.1% is
identified as probable, possible or confirmed human carcinogen by IARC.
OSHA No component of this product present at levels greater than or equal to 0.1% is
on OSHA s list of regulated carcinogens.
NTP No ingredient of this product present at levels greater than or equal to 0.1% is
identified as a known or anticipated carcinogen by NTP.
Reproductive toxicity
Suspected of damaging fertility or the unborn child.
Components:
dimethyl phthalate:
Effects on fertility
: Species: Rat
Application Route: oral (gavage)
Method: OECD Test Guideline 440
Result: negative
Effects on fetal development
: Species: Rat
Application Route: Ingestion
General Toxicity Maternal: NOAEL: 840 mg/kg body weight
Developmental Toxicity: NOAEL: 3,570 mg/kg body weight
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
19 / 31
Method: OECD Test Guideline 414
2-Butanone, peroxide:
Effects on fertility
: Species: Rat
Application Route: oral (gavage)
General Toxicity Parent: NOAEL: 50 mg/kg body weight
Method: OECD Test Guideline 421
Result: negative
Trimethylpentanediol isobutyrate:
Effects on fetal development
: Test Type: One-generation reproduction toxicity study
Species: Rat
Application Route: Ingestion
Method: OECD Test Guideline 414
Result: negative
Reproductive toxicity – As-
sessment
: Suspected of damaging fertility or the unborn child., Some
evidence of adverse effects on sexual function and fertility,
and/or on development, based on animal experiments.
Butanone:
Effects on fertility
: Species: Rat
Application Route: oral (drinking water)
General Toxicity Parent: NOAEL: 10,000 mg/l
General Toxicity F1: NOAEL: 10,000 mg/l
Method: OECD Test Guideline 416
Remarks: Based on data from similar materials
Species: Rat
Application Route: oral (drinking water)
General Toxicity Parent: LOAEL: 20,000 mg/l
Method: OECD Test Guideline 416
Remarks: Based on data from similar materials
Effects on fetal development
: Species: Rat
Application Route: Inhalation
General Toxicity Maternal: NOAEC: ca. 1,002 mg/kg body
weight
Teratogenicity: NOAEC Parent: ca. 1,002 mg/kg body weight
Method: OECD Test Guideline 414
Result: negative
Hydrogen peroxide:
Reproductive toxicity – As-
sessment
: No data available
2-Naphthalenol, 1-[2-[4-(2-phenyldiazenyl)phenyl]diazenyl]-, ar-heptyl ar’,ar”-Me derivs.:
Reproductive toxicity – As- : Some evidence of adverse effects on sexual function and
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
20 / 31
sessment
fertility, and/or on development, based on animal experiments.
STOT-single exposure
Not classified due to lack of data.
Components:
Butanone:
Assessment : May cause drowsiness or dizziness.
Hydrogen peroxide:
Target Organs : Respiratory Tract
Assessment : May cause respiratory irritation.
STOT-repeated exposure
Not classified due to lack of data.
Components:
Hydrogen peroxide:
Remarks : No data available
2-Naphthalenol, 1-[2-[4-(2-phenyldiazenyl)phenyl]diazenyl]-, ar-heptyl ar’,ar”-Me derivs.:
Routes of exposure : Oral
Target Organs : Liver, spleen
Assessment : The substance or mixture is classified as specific target organ
toxicant, repeated exposure, category 2.
Repeated dose toxicity
Components:
dimethyl phthalate:
Species : Rat
NOAEL : 770 mg/kg
Application Route : Oral
Exposure time : 16 w
Method : OECD Test Guideline 408
2-Butanone, peroxide:
Species : Rat
NOAEL : 200 mg/kg
Application Route : oral (gavage)
Exposure time : 28 d
Method : OECD Test Guideline 407
Repeated dose toxicity –
Assessment
: Harmful if swallowed., Harmful if inhaled.
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
21 / 31
Hydrogen peroxide:
Species : Mouse, female
NOAEL : 37 mg/kg
Application Route : oral (drinking water)
Exposure time : 90 d
Remarks : Hydrogen peroxide (H2O2), 35%
Species : Mouse, males
NOAEL : 26 mg/kg
Application Route : oral (drinking water)
Exposure time : 90
Remarks : Hydrogen peroxide (H2O2), 35%
Aspiration toxicity
Not classified due to lack of data.
Components:
dimethyl phthalate:
No aspiration toxicity classification
Trimethylpentanediol isobutyrate:
Not classified due to data which are conclusive although insufficient for classification.
Hydrogen peroxide:
Based on available data, the classification criteria are not met.
Further information
Product:
Remarks : No data available
Components:
dimethyl phthalate:
Remarks : No data available
Trimethylpentanediol isobutyrate:
Remarks : No data available
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
22 / 31
SECTION 12. ECOLOGICAL INFORMATION
Ecotoxicity
Components:
dimethyl phthalate:
Toxicity to fish
: LC50 (Pimephales promelas (fathead minnow)): 39 mg/l
Exposure time: 96 h
Toxicity to daphnia and other
aquatic invertebrates
: LC50 (Daphnia magna (Water flea)): > 52 mg/l
Exposure time: 48 h
Toxicity to algae/aquatic
plants
: EC50 (Desmodesmus subspicatus (green algae)): 260 mg/l
Exposure time: 72 h
Toxicity to fish (Chronic tox-
icity)
: NOEC (Oncorhynchus mykiss (rainbow trout)): 11 mg/l
Exposure time: 102 d
Method: OECD Test Guideline 210
LOEC (Oncorhynchus mykiss (rainbow trout)): 24 mg/l
Exposure time: 102 d
Method: OECD Test Guideline 210
Toxicity to daphnia and other
aquatic invertebrates (Chron-
ic toxicity)
: NOEC (Daphnia magna (Water flea)): 9.6 mg/l
Exposure time: 21 d
LOEC (Daphnia magna (Water flea)): 23 mg/l
Exposure time: 21 d
Toxicity to microorganisms
: EC50: 4,100 mg/l
Exposure time: 0.5 h
Method: OECD Test Guideline 209
2-Butanone, peroxide:
Toxicity to fish
: LC50 (Poecilia reticulata (guppy)): 44.2 mg/l
Exposure time: 96 h
Method: OECD Test Guideline 203
NOEC (Poecilia reticulata (guppy)): 18 mg/l
Exposure time: 96 h
Method: OECD Test Guideline 203
Toxicity to daphnia and other
aquatic invertebrates
: EC50 (Daphnia magna (Water flea)): 39 mg/l
Exposure time: 48 h
Method: OECD Test Guideline 202
NOEC (Daphnia magna (Water flea)): 26.7 mg/l
Method: OECD Test Guideline 202
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
23 / 31
Toxicity to algae/aquatic
plants
: EC50 (Pseudokirchneriella subcapitata (green algae)): 5.6
mg/l
Exposure time: 72 h
Method: OECD Test Guideline 201
NOEC (Pseudokirchneriella subcapitata (green algae)): 2.1
mg/l
Exposure time: 72 h
Method: OECD Test Guideline 201
Toxicity to microorganisms
: EC50 (Bacteria): 48 mg/l
Exposure time: 0.5 h
Method: OECD Test Guideline 209
Trimethylpentanediol isobutyrate:
Toxicity to fish
: NOEC (Fish): >= 6 mg/l
Exposure time: 96 h
Method: OECD Test Guideline 203
Toxicity to daphnia and other
aquatic invertebrates
: EC50 (Daphnia): >= 1.46 mg/l
Exposure time: 48 h
NOEC (Daphnia): 0.7 mg/l
Exposure time: 21 d
Toxicity to algae/aquatic
plants
: EC50 (Chlorella pyrenoidosa): > 7.49 mg/l
Exposure time: 72 h
Method: OECD Test Guideline 201
Toxicity to daphnia and other
aquatic invertebrates (Chron-
ic toxicity)
: LOEC (Daphnia magna (Water flea)): 0.7 mg/l
Exposure time: 21 d
Ecotoxicology Assessment
Acute aquatic toxicity
: This product has no known ecotoxicological effects.
Chronic aquatic toxicity
: Harmful to aquatic life with long lasting effects.
Butanone:
Toxicity to fish
: LC50 (Pimephales promelas (fathead minnow)): 2,993 mg/l
Exposure time: 96 h
Method: OECD Test Guideline 203
Toxicity to daphnia and other
aquatic invertebrates
: EC50 (Daphnia magna (Water flea)): 308 mg/l
Exposure time: 48 h
Method: OECD Test Guideline 202
Toxicity to algae/aquatic : EC50 (Pseudokirchneriella subcapitata (green algae)): 2,029
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
24 / 31
plants
mg/l
Exposure time: 96 h
Method: OECD Test Guideline 201
Toxicity to microorganisms
: NOEC (Pseudomonas putida): 1,150 mg/l
Exposure time: 16 h
Method: DIN 38 412 Part 8
Hydrogen peroxide:
Toxicity to fish
: LC50 (Pimephales promelas (fathead minnow)): 16.4 mg/l
Exposure time: 96 h
Toxicity to daphnia and other
aquatic invertebrates
: LC50 (Daphnia pulex (Water flea)): 2.4 mg/l
Exposure time: 48 h
Toxicity to algae/aquatic
plants
: EC50 (Skeletonema costatum (marine diatom)): 1.38 mg/l
Exposure time: 72 h
NOEC (Skeletonema costatum (marine diatom)): 0.63 mg/l
Exposure time: 72 h
Toxicity to daphnia and other
aquatic invertebrates (Chron-
ic toxicity)
: NOEC (Daphnia magna (Water flea)): 0.63 mg/l
Exposure time: 21 d
Toxicity to microorganisms
: EC50 (activated sludge): > 1,000 mg/l
Exposure time: 3 h
Method: OECD Test Guideline 209
2-Naphthalenol, 1-[2-[4-(2-phenyldiazenyl)phenyl]diazenyl]-, ar-heptyl ar’,ar”-Me derivs.:
Ecotoxicology Assessment
Chronic aquatic toxicity
: May cause long lasting harmful effects to aquatic life.
Persistence and degradability
Components:
dimethyl phthalate:
Biodegradability
: Result: Readily biodegradable.
Method: OECD Test Guideline 301E
2-Butanone, peroxide:
Biodegradability
: Result: Readily biodegradable.
Method: OECD Test Guideline 301D
Trimethylpentanediol isobutyrate:
Biodegradability
: Result: rapidly biodegradable
Exposure time: 28 d
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
25 / 31
Method: OECD Test Guideline 301B
Butanone:
Biodegradability
: Result: Readily biodegradable.
Method: OECD Test Guideline 301D
Hydrogen peroxide:
Biodegradability
: Result: Readily biodegradable.
Bioaccumulative potential
Components:
dimethyl phthalate:
Bioaccumulation
: Bioconcentration factor (BCF): 57
Method: OECD Test Guideline 305
Partition coefficient: n-
octanol/water
: log Pow: 1.54
2-Butanone, peroxide:
Partition coefficient: n-
octanol/water
: log Pow: < 0.3 (25 C / 25 C)
Trimethylpentanediol isobutyrate:
Bioaccumulation
: Species: Fish
Bioconcentration factor (BCF): 1.95
Partition coefficient: n-
octanol/water
: log Pow: 4.91 (25 C / 25 C)
Butanone:
Partition coefficient: n-
octanol/water
: log Pow: 0.3 (40 C / 40 C)
Hydrogen peroxide:
Partition coefficient: n-
octanol/water
: log Pow: -1.57 (20 C / 20 C)
Remarks: Information refers to the main ingredient.
Calculation
Mobility in soil
No data available
Other adverse effects
Product:
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
26 / 31
Ozone-Depletion Potential
: Regulation: 40 CFR Protection of Environment; Part 82 Pro-
tection of Stratospheric Ozone - CAA Section 602 Class I
Substances
Remarks: This product neither contains, nor was manufac-
tured with a Class I or Class II ODS as defined by the U.S.
Clean Air Act Section 602 (40 CFR 82, Subpt. A, App.A + B).
Additional ecological infor-
mation
: An environmental hazard cannot be excluded in the event of
unprofessional handling or disposal.
Toxic to aquatic life.
Components:
dimethyl phthalate:
Additional ecological infor-
mation
: No data available
SECTION 13. DISPOSAL CONSIDERATIONS
Disposal methods
Waste from residues : Dispose of wastes in an approved waste disposal facility.
The product should not be allowed to enter drains, water
courses or the soil.
Do not contaminate ponds, waterways or ditches with
chemical or used container.
Contaminated packaging
: Dispose of in accordance with local regulations.
Clean container with water.
Dispose of contents/ container to an approved waste disposal
plant.
Empty remaining contents.
Dispose of as unused product.
Do not re-use empty containers.
Do not burn, or use a cutting torch on, the empty drum.
SECTION 14. TRANSPORT INFORMATION
International Regulations
UNRTDG
UN number : UN 3105
Proper shipping name : ORGANIC PEROXIDE TYPE D, LIQUID
(METHYL ETHYL KETONE PEROXIDE(S) )
Class : 5.2
Packing group : Not assigned by regulation
Labels : 5.2
Environmentally hazardous : no
IATA-DGR
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
27 / 31
UN/ID No. : UN 3105
Proper shipping name : Organic peroxide type D, liquid
(Methyl ethyl ketone peroxide(s))
Class : 5.2
Packing group : Not assigned by regulation
Labels : Organic Peroxides, Keep Away From Heat
Packing instruction (cargo
aircraft)
: 570
Packing instruction (passen-
ger aircraft)
: 570
IMDG-Code
UN number : UN 3105
Proper shipping name : ORGANIC PEROXIDE TYPE D, LIQUID
(METHYL ETHYL KETONE PEROXIDE(S) )
Class : 5.2
Packing group : Not assigned by regulation
Labels : 5.2
EmS Code : F-J, S-R
Marine pollutant : no
Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code
Not applicable for product as supplied.
Domestic regulation
49 CFR
UN/ID/NA number : UN 3105
Proper shipping name : Organic peroxide type D, liquid
(Methyl ethyl ketone peroxide(s), <=45%)
Class : 5.2
Packing group : Not assigned by regulation
Labels : ORGANIC PEROXIDE
ERG Code : 145
Marine pollutant : no
Special precautions for user
The transport classification(s) provided herein are for informational purposes only, and solely
based upon the properties of the unpackaged material as it is described within this Safety Data
Sheet. Transportation classifications may vary by mode of transportation, package sizes, and
variations in regional or country regulations.
SECTION 15. REGULATORY INFORMATION
CERCLA Reportable Quantity
Components CAS-No. Component RQ
(lbs)
Calculated product RQ
(lbs)
2-Butanone, peroxide 1338-23-4 10 29
Butanone 78-93-3 5000 5000 (D035)
Butanone 78-93-3 100 100 (F005)
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
28 / 31
Xylene 1330-20-7 100 100 (F003)
ethylbenzene 100-41-4 100 100 (F003)
SARA 304 Extremely Hazardous Substances Reportable Quantity
Listed substances in the product are at low enough levels to not be expected to exceed the RQ
SARA 302 Extremely Hazardous Substances Threshold Planning Quantity
Components CAS-No. Component TPQ (lbs)
Hydrogen peroxide 7722-84-1 1000
SARA 311/312 Hazards
: Flammable (gases, aerosols, liquids, or solids)
Organic peroxides
Acute toxicity (any route of exposure)
Reproductive toxicity
Skin corrosion or irritation
Serious eye damage or eye irritation
SARA 313
: The following components are subject to reporting levels
established by SARA Title III, Section 313:
dimethyl
phthalate
131-11-3
Clean Air Act
This product neither contains, nor was manufactured with a Class I or Class II ODS as defined by
the U.S. Clean Air Act Section 602 (40 CFR 82, Subpt. A, App.A + B).
The following chemical(s) are listed as HAP under the U.S. Clean Air Act, Section 112 (40 CFR
61):
dimethyl phthalate 131-11-3
This product does not contain any chemicals listed under the U.S. Clean Air Act Section 112(r) for
Accidental Release Prevention (40 CFR 68.130, Subpart F).
The following chemical(s) are listed under the U.S. Clean Air Act Section 111 SOCMI Intermedi-
ate or Final VOC's (40 CFR 60.489):
Butanone 78-93-3
Clean Water Act
The following Hazardous Substances are listed under the U.S. CleanWater Act, Section 311, Ta-
ble 116.4A:
Xylene 1330-20-7
ethylbenzene 100-41-4
The following Hazardous Chemicals are listed under the U.S. CleanWater Act, Section 311, Table
117.3:
Xylene 1330-20-7
ethylbenzene 100-41-4
This product contains the following toxic pollutants listed under the U.S. Clean Water Act Section
307
dimethyl phthalate 131-11-3
This product contains the following priority pollutants related to the U.S. Clean Water Act:
dimethyl phthalate 131-11-3
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
29 / 31
California Prop. 65
WARNING: This product can expose you to chemicals including ethylbenzene, which is/are
known to the State of California to cause cancer. For more information go to
www.P65Warnings.ca.gov.
International Regulations
The ingredients of this product are reported in the following inventories:
TCSI (TW)
:
On the inventory, or in compliance with the inventory
TSCA (US)
:
All substances listed as active on the TSCA inventory
DSL (CA)
:
All components of this product are on the Canadian DSL
KECI (KR)
:
On the inventory, or in compliance with the inventory
PICCS (PH)
:
On the inventory, or in compliance with the inventory
IECSC (CN)
:
On the inventory, or in compliance with the inventory
TSCA list
No substances are subject to a Significant New Use Rule.
No substances are subject to TSCA 12(b) export notification requirements.
SECTION 16. OTHER INFORMATION
Further information
This material safety datasheet only contains information relating to safety and does not replace
any product information or product specification.
These safety instructions also apply to empty packaging which may still contain product residues.
The hazards on the label also apply to residues in the container.
Sources of key data used to
compile the Material Safety
Data Sheet
: Internal technical data, data from raw material SDSs, OECD
eChem Portal search results and European Chemicals Agen-
cy, http://echa.europa.eu/
Revision Date : 05/23/2024
Full text of other abbreviations
ACGIH : USA. ACGIH Threshold Limit Values (TLV)
ACGIH BEI : ACGIH - Biological Exposure Indices (BEI)
NIOSH REL : USA. NIOSH Recommended Exposure Limits
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
30 / 31
OSHA P0 : USA. Table Z-1-A Limits for Air Contaminants (1989 vacated
values)
OSHA Z-1 : USA. Occupational Exposure Limits (OSHA) - Table Z-1 Lim-
its for Air Contaminants
ACGIH / TWA : 8-hour, time-weighted average
ACGIH / STEL : Short-term exposure limit
ACGIH / C : Ceiling limit
NIOSH REL / TWA : Time-weighted average concentration for up to a 10-hour
workday during a 40-hour workweek
NIOSH REL / ST : STEL - 15-minute TWA exposure that should not be exceeded
at any time during a workday
NIOSH REL / C : Ceiling value not be exceeded at any time.
OSHA P0 / TWA : 8-hour time weighted average
OSHA P0 / STEL : Short-term exposure limit
OSHA P0 / C : Ceiling limit
OSHA Z-1 / TWA : 8-hour time weighted average
AIIC - Australian Inventory of Industrial Chemicals; ASTM - American Society for the Testing of
Materials; bw - Body weight; CERCLA - Comprehensive Environmental Response, Compensation,
and Liability Act; CMR - Carcinogen, Mutagen or Reproductive Toxicant; DIN - Standard of the
German Institute for Standardisation; DOT - Department of Transportation; DSL - Domestic Sub-
stances List (Canada); ECx - Concentration associated with x% response; EHS - Extremely Haz-
ardous Substance; ELx - Loading rate associated with x% response; EmS - Emergency Schedule;
ENCS - Existing and New Chemical Substances (Japan); ErCx - Concentration associated with
x% growth rate response; ERG - Emergency Response Guide; GHS - Globally Harmonized Sys-
tem; GLP - Good Laboratory Practice; HMIS - Hazardous Materials Identification System; IARC -
International Agency for Research on Cancer; IATA - International Air Transport Association; IBC
- International Code for the Construction and Equipment of Ships carrying Dangerous Chemicals
in Bulk; IC50 - Half maximal inhibitory concentration; ICAO - International Civil Aviation Organiza-
tion; IECSC - Inventory of Existing Chemical Substances in China; IMDG - International Maritime
Dangerous Goods; IMO - International Maritime Organization; ISHL - Industrial Safety and Health
Law (Japan); ISO - International Organisation for Standardization; KECI - Korea Existing Chemi-
cals Inventory; LC50 - Lethal Concentration to 50 % of a test population; LD50 - Lethal Dose to
50% of a test population (Median Lethal Dose); MARPOL - International Convention for the Pre-
vention of Pollution from Ships; MSHA - Mine Safety and Health Administration; n.o.s. - Not Oth-
erwise Specified; NFPA - National Fire Protection Association; NO(A)EC - No Observed (Adverse)
Effect Concentration; NO(A)EL - No Observed (Adverse) Effect Level; NOELR - No Observable
Effect Loading Rate; NTP - National Toxicology Program; NZIoC - New Zealand Inventory of
Chemicals; OECD - Organization for Economic Co-operation and Development; OPPTS - Office
of Chemical Safety and Pollution Prevention; PBT - Persistent, Bioaccumulative and Toxic sub-
stance; PICCS - Philippines Inventory of Chemicals and Chemical Substances; (Q)SAR - (Quanti-
tative) Structure Activity Relationship; RCRA - Resource Conservation and Recovery Act;
REACH - Regulation (EC) No 1907/2006 of the European Parliament and of the Council concern-
ing the Registration, Evaluation, Authorisation and Restriction of Chemicals; RQ - Reportable
Quantity; SADT - Self-Accelerating Decomposition Temperature; SARA - Superfund Amend-
ments and Reauthorization Act; SDS - Safety Data Sheet; TCSI - Taiwan Chemical Substance
Inventory; TECI - Thailand Existing Chemicals Inventory; TSCA - Toxic Substances Control Act
(United States); UN - United Nations; UNRTDG - United Nations Recommendations on the
Transport of Dangerous Goods; vPvB - Very Persistent and Very Bioaccumulative
The information provided in this Safety Data Sheet is correct to the best of our knowledge, infor-
mation and belief at the date of its publication. The information given is designed only as a guid-
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 RED
Version
2.2
Revision Date:
05/23/2024
SDS Number:
600000000114
Date of last issue: 07/26/2021
Date of first issue: 04/30/2018
31 / 31
ance for safe handling, use, processing, storage, transportation, disposal and release and is not
to be considered a warranty or quality specification. The information relates only to the specific
material designated and may not be valid for such material used in combination with any other
materials or in any process, unless specified in the text.
US / Z8
by | Sep 27, 2025
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
1 / 30
SECTION 1. IDENTIFICATION
Trade name
: NOROX
MEKP-925 FR
Manufacturer or supplier’s details
Company name of supplier
: United Initiators, Inc.
Address
: 555 Garden Street
Elyria OH 44035 USA
Telephone
: +1-440-323-3112
Telefax
: +1-440-323-2659
Emergency telephone
: CHEMTREC US (24h): +1-800-424-9300
CHEMTREC WORLD (24h): +1-703-527-3887
E-mail address of person
responsible for the SDS
: cs-initiators.nafta@united-in.com
Recommended use of the chemical and restrictions on use
Recommended use
: Hardener
SECTION 2. HAZARDS IDENTIFICATION
GHS classification in accordance with the OSHA Hazard Communication Standard (29 CFR
1910.1200)
Flammable liquids
: Category 4
Organic peroxides
: Type D
Acute toxicity (Oral)
: Category 4
Acute toxicity (Inhalation)
: Category 4
Skin corrosion
: Category 1B
Serious eye damage
: Category 1
Reproductive toxicity
: Category 2
Short-term (acute) aquatic
hazard
: Category 2
GHS label elements
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
2 / 30
Hazard pictograms
:
Signal Word
: Danger
Hazard Statements
: H227 Combustible liquid.
H242 Heating may cause a fire.
H302 + H332 Harmful if swallowed or if inhaled.
H314 Causes severe skin burns and eye damage.
H361 Suspected of damaging fertility or the unborn child.
H401 Toxic to aquatic life.
Precautionary Statements
:
Prevention:
P201 Obtain special instructions before use.
P202 Do not handle until all safety precautions have been read
and understood.
P210 Keep away from heat/ sparks/ open flames/ hot surfaces.
No smoking.
P220 Keep/Store away from clothing/ strong acids, bases,
heavy metal salts and other reducing substances /combustible
materials.
P234 Keep only in original container.
P261 Avoid breathing mist or vapors.
P264 Wash skin thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P271 Use only outdoors or in a well-ventilated area.
P273 Avoid release to the environment.
P280 Wear protective gloves/ protective clothing/ eye protection/
face protection.
Response:
P301 + P312 + P330 IF SWALLOWED: Call a POISON
CENTER/ doctor if you feel unwell. Rinse mouth.
P301 + P330 + P331 IF SWALLOWED: Rinse mouth. Do NOT
induce vomiting.
P303 + P361 + P353 IF ON SKIN (or hair): Take off immediately
all contaminated clothing. Rinse skin with water/ shower.
P304 + P340 + P310 IF INHALED: Remove person to fresh air
and keep comfortable for breathing. Immediately call a POISON
CENTER/ doctor.
P305 + P351 + P338 + P310 IF IN EYES: Rinse cautiously with
water for several minutes. Remove contact lenses, if present
and easy to do. Continue rinsing. Immediately call a POISON
CENTER/ doctor.
P308 + P313 IF exposed or concerned: Get medical advice/
attention.
P363 Wash contaminated clothing before reuse.
P370 + P378 In case of fire: Use water spray, alcohol-resistant
foam, dry chemical or carbon dioxide to extinguish.
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
3 / 30
Storage:
P405 Store locked up.
P410 Protect from sunlight.
P411 + P235 Store at temperatures not exceeding < 100 F/ <
38 C. Keep cool.
P420 Store away from other materials.
Disposal:
P501 Dispose of contents/ container to an approved waste dis-
posal plant.
Other hazards
None known.
SECTION 3. COMPOSITION/INFORMATION ON INGREDIENTS
Substance / Mixture
: Mixture
Chemical nature
: Organic Peroxide
Liquid mixture
Components
Chemical name CAS-No. Concentration (% w/w)
dimethyl phthalate 131-11-3
>= 40 – < 45
2-Butanone, peroxide 1338-23-4
>= 30 – < 35
Trimethylpentanediol isobutyrate 6846-50-0
>= 15 – < 20
Butanone 78-93-3
>= 1 – < 5
Hydrogen peroxide 7722-84-1
>= 1 – < 5
Actual concentration is withheld as a trade secret
SECTION 4. FIRST AID MEASURES
General advice
: Take off contaminated clothing and shoes immediately.
Call a physician immediately.
Never give anything by mouth to an unconscious person.
If unconscious, place in recovery position and seek medical
advice.
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
4 / 30
Move out of dangerous area.
Show this material safety data sheet to the doctor in
attendance.
Do not leave the victim unattended.
Symptoms of poisoning may appear several hours later.
If inhaled
: Administer oxygen if breathing is difficult or cyanosis is
observed.
Call a physician immediately.
If breathed in, move person into fresh air.
If not breathing, give artificial respiration.
Respiratory tract burning possible if aerosols are inhaled.
Call a physician or poison control center immediately.
If unconscious, place in recovery position and seek medical
advice.
Keep respiratory tract clear.
In case of skin contact
: If symptoms persist, call a physician.
Immediate medical treatment is necessary as untreated
wounds from corrosion of the skin heal slowly and with
difficulty.
In case of contact, immediately flush skin with plenty of water
for at least 15 minutes while removing contaminated clothing
and shoes.
Wash contaminated clothing before re-use.
If on skin, rinse well with water.
If on clothes, remove clothes.
In case of eye contact
: Small amounts splashed into eyes can cause irreversible
tissue damage and blindness.
In the case of contact with eyes, rinse immediately with plenty
of water and seek medical advice.
Continue rinsing eyes during transport to hospital.
Remove contact lenses.
Protect unharmed eye.
Keep eye wide open while rinsing.
If eye irritation persists, consult a specialist.
If swallowed
: Call a physician immediately.
Rinse mouth thoroughly with water.
Keep respiratory tract clear.
Do NOT induce vomiting.
If symptoms persist, call a physician.
Most important symptoms
and effects, both acute and
delayed
: Harmful if swallowed or if inhaled.
Causes serious eye damage.
Suspected of damaging fertility or the unborn child.
Causes severe burns.
Protection of first-aiders
: First Aid responders should pay attention to self-protection
and use the recommended protective clothing
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
5 / 30
Notes to physician
: Treat symptomatically and supportively.
SECTION 5. FIRE-FIGHTING MEASURES
Suitable extinguishing media
: Water spray jet
Alcohol-resistant foam
Carbon dioxide (CO2)
Dry chemical
Unsuitable extinguishing
media
: High volume water jet
Specific hazards during fire
fighting
: Risk of explosion if heated under confinement.
Possible emission of gaseous decomposition products may
lead to a dangerous pressure build-up.
Avoid confinement.
Contact with incompatible materials or exposure to
temperatures exceeding SADT may result in a self-
accelerating decomposition reaction with release of flammable
vapors which may auto-ignite.
The product burns violently.
Flash back possible over considerable distance.
Do not allow run-off from fire fighting to enter drains or water
courses.
Vapors may form explosive mixtures with air.
Cool closed containers exposed to fire with water spray.
Specific extinguishing meth-
ods
: Do not use a solid water stream as it may scatter and spread
fire.
Remove undamaged containers from fire area if it is safe to do
so.
Use water spray to cool unopened containers.
Further information : Use extinguishing measures that are appropriate to local
circumstances and the surrounding environment.
Use a water spray to cool fully closed containers.
Collect contaminated fire extinguishing water separately. This
must not be discharged into drains.
Fire residues and contaminated fire extinguishing water must
be disposed of in accordance with local regulations.
Special protective equipment
for fire-fighters
: Wear self-contained breathing apparatus for firefighting if
necessary.
Use personal protective equipment.
SECTION 6. ACCIDENTAL RELEASE MEASURES
Personal precautions, protec-
tive equipment and emer-
: Follow safe handling advice and personal protective
equipment recommendations.
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
6 / 30
gency procedures
Beware of vapors accumulating to form explosive
concentrations. Vapors can accumulate in low areas.
Use personal protective equipment.
Remove all sources of ignition.
Never return spills in original containers for re-use.
Treat recovered material as described in the section "Disposal
considerations".
Environmental precautions
: Prevent product from entering drains.
Prevent further leakage or spillage if safe to do so.
If the product contaminates rivers and lakes or drains inform
respective authorities.
Methods and materials for
containment and cleaning up
: Contact with incompatible substances can cause
decomposition at or below SADT.
Clear spills immediately.
Suppress (knock down) gases/vapors/mists with a water spray
jet.
To clean the floor and all objects contaminated by this
material, use plenty of water.
Soak up with inert absorbent material.
Isolate waste and do not reuse.
Non-sparking tools should be used.
Local or national regulations may apply to releases and
disposal of this material, as well as those materials and items
employed in the cleanup of releases. You will need to
determine which regulations are applicable.
SECTION 7. HANDLING AND STORAGE
Technical measures
: See Engineering measures under EXPOSURE
CONTROLS/PERSONAL PROTECTION section.
Advice on protection against
fire and explosion
: Take necessary action to avoid static electricity discharge
(which might cause ignition of organic vapors).
Keep away from heat and sources of ignition.
Use only explosion-proof equipment.
Keep away from open flames, hot surfaces and sources of
ignition.
Keep away from combustible material.
Do not spray on a naked flame or any incandescent material.
Advice on safe handling
: Open drum carefully as content may be under pressure.
Protect from contamination.
Do not swallow.
Do not breathe vapors/dust.
Avoid exposure - obtain special instructions before use.
Avoid contact with skin and eyes.
Avoid formation of aerosol.
Take precautionary measures against static discharges.
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
7 / 30
Never return any product to the container from which it was
originally removed.
Provide sufficient air exchange and/or exhaust in work rooms.
Avoid confinement.
Keep away from heat, hot surfaces, sparks, open flames and
other ignition sources. No smoking.
Smoking, eating and drinking should be prohibited in the
application area.
Wash thoroughly after handling.
For personal protection see section 8.
Conditions for safe storage
: Store in original container.
Keep containers tightly closed in a cool, well-ventilated place.
Store in cool place.
Keep in a well-ventilated place.
Contamination may result in dangerous pressure increases -
closed containers may rupture.
Observe label precautions.
Store in accordance with the particular national regulations.
Avoid impurities (e.g. rust, dust, ash), risk of decomposition.
Electrical installations / working materials must comply with
the technological safety standards.
Containers which are opened must be carefully resealed and
kept upright to prevent leakage.
Materials to avoid
: Keep away from combustible materials.
Keep away from strong acids, bases, heavy metal salts and
other reducing substances.
Recommended storage tem-
perature
: < 100 F
< 38 C
Further information on stor-
age stability
: Stable under recommended storage conditions.
SECTION 8. EXPOSURE CONTROLS/PERSONAL PROTECTION
Ingredients with workplace control parameters
Components CAS-No. Value type
(Form of
exposure)
Control parame-
ters / Permissible
concentration
Basis
dimethyl phthalate 131-11-3 TWA 5 mg/m3 ACGIH
TWA 5 mg/m3 NIOSH REL
TWA 5 mg/m3 OSHA Z-1
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
8 / 30
TWA 5 mg/m3 OSHA P0
2-Butanone, peroxide 1338-23-4 C 0.2 ppm ACGIH
C 0.2 ppm
1.5 mg/m3
NIOSH REL
C 0.7 ppm
5 mg/m3
OSHA P0
Butanone 78-93-3 TWA 200 ppm ACGIH
STEL 300 ppm ACGIH
TWA 200 ppm
590 mg/m3
NIOSH REL
ST 300 ppm
885 mg/m3
NIOSH REL
TWA 200 ppm
590 mg/m3
OSHA Z-1
TWA 200 ppm
590 mg/m3
OSHA P0
STEL 300 ppm
885 mg/m3
OSHA P0
Hydrogen peroxide 7722-84-1 TWA 1 ppm ACGIH
TWA 1 ppm
1.4 mg/m3
NIOSH REL
TWA 1 ppm
1.4 mg/m3
OSHA Z-1
TWA 1 ppm
1.4 mg/m3
OSHA P0
Biological occupational exposure limits
Components CAS-No. Control
parameters
Biological
specimen
Sam-
pling
time
Permissible
concentra-
tion
Basis
Butanone 78-93-3 methyl ethyl
ketone
Urine End of
shift (As
soon as
possible
after
exposure
ceases)
2 mg/l ACGIH
BEI
Engineering measures : Minimize workplace exposure concentrations.
Personal protective equipment
Respiratory protection
: In the case of dust or aerosol formation use respirator with an
approved filter.
Filter type
: ABEK-filter
Use NIOSH approved respiratory protection.
Hand protection
Material : butyl-rubber
Break through time : <= 480 min
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
9 / 30
Glove thickness : 0.5 mm
Material : Nitrile rubber
Break through time : < 30 min
Glove thickness : 0.4 mm
Remarks
: The data about break through time/strength of material are
standard values! The exact break through time/strength of
material has to be obtained from the producer of the
protective glove. Choose gloves to protect hands against
chemicals depending on the concentration and quantity of the
hazardous substance and specific to place of work.
For special applications, we recommend clarifying the
resistance to chemicals of the aforementioned protective
gloves with the glove manufacturer. Wash hands before
breaks and at the end of workday.
Eye protection
: Ensure that eyewash stations and safety showers are close
to the workstation location.
Please follow all applicable local/national requirements when
selecting protective measures for a specific workplace.
Always wear eye protection when the potential for inadvertent
eye contact with the product cannot be excluded.
Tightly fitting safety goggles
Please wear suitable protective goggles. Also wear face
protection if there is a splash hazard.
Skin and body protection
: Select appropriate protective clothing based on chemical
resistance data and an assessment of the local exposure
potential.
Additional body garments should be used based upon the
task being performed (e.g., sleevelets, apron, gauntlets,
disposable suits) to avoid exposed skin surfaces.
Wear as appropriate:
Flame retardant antistatic protective clothing.
Protective measures
: The type of protective equipment must be selected according
to the concentration and amount of the dangerous substance
at the specific workplace.
Hygiene measures
: Avoid contact with skin, eyes and clothing.
Keep away from food and drink.
When using do not eat or drink.
When using do not smoke.
Wash hands before breaks and immediately after handling
the product.
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
10 / 30
SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES
Appearance
: liquid
Color
: red
Odor
: slight
pH
: No data available
Melting point/range
: No data available
Boiling point/boiling range
: Decomposition: Decomposes below the boiling point.
Flash point
: 76 C
Flammability (solid, gas)
: Not applicable
Upper explosion limit / Upper
flammability limit
: No data available
Lower explosion limit / Lower
flammability limit
: No data available
Vapor pressure
: No data available
Relative vapor density
: > 1
Density
: 1.1 g/cm3
Solubility(ies)
Water solubility
: soluble
Partition coefficient: n-
octanol/water
: No data available
Self-Accelerating decomposi-
tion temperature (SADT)
: >= 60 C
Method: UN-Test H.4
SADT-Self Accelerating Decomposition Temperature. Lowest
temperature at which the tested package size will undergo a
self-accelerating decomposition reaction.
Viscosity
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
11 / 30
Viscosity, dynamic
: No data available
Viscosity, kinematic
: not determined
Oxidizing properties
: The substance or mixture is not classified as oxidizing.
Organic peroxide
SECTION 10. STABILITY AND REACTIVITY
Reactivity
: Stable under recommended storage conditions.
Heating may cause a fire or explosion.
Chemical stability
: Stable under recommended storage conditions.
No decomposition if stored normally.
Possibility of hazardous reac-
tions
: Vapors may form explosive mixture with air.
Conditions to avoid
: Protect from contamination.
Contact with incompatible substances can cause
decomposition at or below SADT.
Heat, flames and sparks.
Avoid confinement.
Incompatible materials
: Accelerators, strong acids and bases, heavy metals and
heavy metal salts, reducing agents
Hazardous decomposition
products
: Irritant, caustic, flammable, noxious/toxic gases and vapours
can develop in the case of fire and decomposition
SECTION 11. TOXICOLOGICAL INFORMATION
Acute toxicity
Harmful if swallowed or if inhaled.
Product:
Acute oral toxicity
: Acute toxicity estimate: 1,417 mg/kg
Method: Calculation method
Acute inhalation toxicity
: Acute toxicity estimate: 4.32 mg/l
Exposure time: 4 h
Test atmosphere: dust/mist
Method: Calculation method
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
12 / 30
Acute dermal toxicity
: Acute toxicity estimate: > 5,000 mg/kg
Method: Calculation method
Components:
dimethyl phthalate:
Acute oral toxicity
: LD50 (Rat): > 5,000 mg/kg
Acute inhalation toxicity
: (Rat): > 10.4 mg/l
Exposure time: 6 h
Test atmosphere: vapor
Remarks: No mortality observed at this dose.
Acute dermal toxicity
: LD50 (Rabbit): > 12,000 mg/kg
2-Butanone, peroxide:
Acute oral toxicity
: Acute toxicity estimate: 500 mg/kg
Method: Expert judgment
Acute inhalation toxicity
: Acute toxicity estimate: 1.5 mg/l
Exposure time: 4 h
Test atmosphere: dust/mist
Method: Expert judgment
Assessment: The component/mixture is moderately toxic after
short term inhalation.
Remarks: Based on data from similar materials
Acute dermal toxicity
: Acute toxicity estimate: 2,500 mg/kg
Method: Expert judgment
Trimethylpentanediol isobutyrate:
Acute oral toxicity
: LD50 (Rat): > 2,000 mg/kg
Method: Expert judgment
Assessment: The substance or mixture has no acute oral tox-
icity
Acute inhalation toxicity
: LCLo (Rat): > 0.12 mg/l
Exposure time: 6 h
Test atmosphere: vapor
Method: Expert judgment
Assessment: The substance or mixture has no acute inhala-
tion toxicity
Remarks: No mortality observed at this dose.
Acute dermal toxicity
: LD50 (Guinea pig): > 2,000 mg/kg
Method: Expert judgment
Assessment: The substance or mixture has no acute dermal
toxicity
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
13 / 30
Butanone:
Acute oral toxicity
: LD50 (Rat): 2,193 mg/kg
Method: OECD Test Guideline 423
Acute inhalation toxicity
: Remarks: No data available
Acute dermal toxicity
: LD50 (Rabbit): > 5,000 mg/kg
Method: OECD Test Guideline 402
Remarks: Based on available data, the classification criteria
are not met.
Hydrogen peroxide:
Acute oral toxicity
: LD50 (Rat, male and female): 431 mg/kg
Method: Expert judgment
Assessment: The component/mixture is moderately toxic after
single ingestion.
Acute inhalation toxicity
: Acute toxicity estimate: 1.5 mg/l
Exposure time: 4 h
Test atmosphere: dust/mist
Assessment: The component/mixture is moderately toxic after
short term inhalation.
Remarks: Based on harmonised classification in EU regulation
1272/2008, Annex VI
Acute dermal toxicity
: LD50 (Rabbit): 9,200 mg/kg
Remarks: No adverse effect has been observed in acute tox-
icity tests.
Skin corrosion/irritation
Causes severe burns.
Product:
Remarks : Extremely corrosive and destructive to tissue.
Components:
dimethyl phthalate:
Species : Rabbit
Method : Draize Test
Result : No skin irritation
2-Butanone, peroxide:
Species : Rabbit
Result : Causes burns.
Trimethylpentanediol isobutyrate:
Species : Guinea pig
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
14 / 30
Exposure time : 24 h
Result : No skin irritation
Remarks : Based on available data, the classification criteria are not met.
Butanone:
Species : Rabbit
Assessment : Repeated exposure may cause skin dryness or cracking.
Method : OECD Test Guideline 404
Result : No skin irritation
Hydrogen peroxide:
Result : Corrosive after 3 minutes or less of exposure
Serious eye damage/eye irritation
Causes serious eye damage.
Product:
Remarks : May cause irreversible eye damage.
Components:
dimethyl phthalate:
Species : Rabbit
Result : No eye irritation
Method : OECD Test Guideline 405
2-Butanone, peroxide:
Result : Irreversible effects on the eye
Trimethylpentanediol isobutyrate:
Species : Rabbit
Result : No eye irritation
Exposure time : 24 h
Butanone:
Species : Rabbit
Result : Eye irritation
Method : OECD Test Guideline 405
Hydrogen peroxide:
Result : Irreversible effects on the eye
Remarks : Hydrogen peroxide (H2O2), 35%
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
15 / 30
Respiratory or skin sensitization
Skin sensitization
Not classified due to lack of data.
Respiratory sensitization
Not classified due to lack of data.
Components:
dimethyl phthalate:
Species : Mouse
Method : OECD Test Guideline 429
Result : Does not cause skin sensitization.
2-Butanone, peroxide:
Species : Guinea pig
Method : OECD Test Guideline 406
Result : Does not cause skin sensitization.
Assessment : Harmful if swallowed., Harmful if inhaled.
Trimethylpentanediol isobutyrate:
Species : Guinea pig
Result : Does not cause skin sensitization.
Butanone:
Routes of exposure : Skin contact
Species : Guinea pig
Method : OECD Test Guideline 406
Result : Does not cause skin sensitization.
Germ cell mutagenicity
Not classified due to lack of data.
Components:
dimethyl phthalate:
Genotoxicity in vitro
: Method: OECD Test Guideline 471
Result: negative
Method: OECD Test Guideline 473
Result: negative
Method: OECD Test Guideline 476
Result: positive
Genotoxicity in vivo
: Test Type: Chromosomal aberration
Species: Rat
Application Route: Intraperitoneal
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
16 / 30
Result: negative
Test Type: Micronucleus test
Species: Mouse
Application Route: Intraperitoneal injection
Result: negative
2-Butanone, peroxide:
Genotoxicity in vitro
: Method: OECD Test Guideline 473
Result: negative
Method: OECD Test Guideline 471
Result: negative
Method: OECD Test Guideline 476
Result: negative
Trimethylpentanediol isobutyrate:
Genotoxicity in vitro
: Test Type: In vitro mammalian cell gene mutation test
Method: OECD Test Guideline 476
Result: negative
Test Type: Ames test
Method: Regulation (EC) No. 440/2008, Annex, B.13/14
(Ames test)
Result: negative
Test Type: Chromosome aberration test in vitro
Method: OECD Test Guideline 473
Result: negative
Butanone:
Genotoxicity in vitro
: Method: OECD Test Guideline 471
Result: negative
Method: OECD Test Guideline 476
Result: negative
Method: OECD Test Guideline 473
Result: negative
Genotoxicity in vivo
: Species: Mouse
Application Route: Intraperitoneal
Method: OECD Test Guideline 474
Result: negative
Hydrogen peroxide:
Genotoxicity in vitro
: Test Type: Bacterial reverse mutation assay (AMES)
Result: negative
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
17 / 30
positive
Remarks: Information taken from reference works and the
literature.
Test Type: Chromosome aberration test in vitro
Method: OECD Test Guideline 473
Result: positive
Remarks: Information taken from reference works and the
literature.
Genotoxicity in vivo
: Test Type: Mammalian erythrocyte micronucleus test (in vivo
cytogenetic assay)
Species: Mouse (male and female)
Method: OECD Test Guideline 474
Result: negative
Remarks: Hydrogen peroxide (H2O2), 35%
Germ cell mutagenicity –
Assessment
: Based on available data, the classification criteria are not met.
Carcinogenicity
Not classified due to lack of data.
Components:
dimethyl phthalate:
Species : Rat
Application Route : Skin contact
Method : OECD Test Guideline 451
Result : negative
Remarks : Based on data from similar materials
2-Butanone, peroxide:
Remarks : This information is not available.
Hydrogen peroxide:
Carcinogenicity – Assess-
ment
: Carcinogenicity classification not possible from current data.
IARC No ingredient of this product present at levels greater than or equal to 0.1% is
identified as probable, possible or confirmed human carcinogen by IARC.
OSHA No component of this product present at levels greater than or equal to 0.1% is
on OSHA s list of regulated carcinogens.
NTP No ingredient of this product present at levels greater than or equal to 0.1% is
identified as a known or anticipated carcinogen by NTP.
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
18 / 30
Reproductive toxicity
Suspected of damaging fertility or the unborn child.
Components:
dimethyl phthalate:
Effects on fertility
: Species: Rat
Application Route: oral (gavage)
Method: OECD Test Guideline 440
Result: negative
Effects on fetal development
: Species: Rat
Application Route: Ingestion
General Toxicity Maternal: NOAEL: 840 mg/kg body weight
Developmental Toxicity: NOAEL: 3,570 mg/kg body weight
Method: OECD Test Guideline 414
2-Butanone, peroxide:
Effects on fertility
: Species: Rat
Application Route: oral (gavage)
General Toxicity Parent: NOAEL: 50 mg/kg body weight
Method: OECD Test Guideline 421
Result: negative
Trimethylpentanediol isobutyrate:
Effects on fetal development
: Test Type: One-generation reproduction toxicity study
Species: Rat
Application Route: Ingestion
Method: OECD Test Guideline 414
Result: negative
Reproductive toxicity – As-
sessment
: Suspected of damaging fertility or the unborn child., Some
evidence of adverse effects on sexual function and fertility,
and/or on development, based on animal experiments.
Butanone:
Effects on fertility
: Species: Rat
Application Route: oral (drinking water)
General Toxicity Parent: NOAEL: 10,000 mg/l
General Toxicity F1: NOAEL: 10,000 mg/l
Method: OECD Test Guideline 416
Remarks: Based on data from similar materials
Species: Rat
Application Route: oral (drinking water)
General Toxicity Parent: LOAEL: 20,000 mg/l
Method: OECD Test Guideline 416
Remarks: Based on data from similar materials
Effects on fetal development : Species: Rat
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
19 / 30
Application Route: Inhalation
General Toxicity Maternal: NOAEC: ca. 1,002 mg/kg body
weight
Teratogenicity: NOAEC Parent: ca. 1,002 mg/kg body weight
Method: OECD Test Guideline 414
Result: negative
Hydrogen peroxide:
Reproductive toxicity – As-
sessment
: No data available
STOT-single exposure
Not classified due to lack of data.
Components:
Butanone:
Assessment : May cause drowsiness or dizziness.
Hydrogen peroxide:
Target Organs : Respiratory Tract
Assessment : May cause respiratory irritation.
STOT-repeated exposure
Not classified due to lack of data.
Components:
Hydrogen peroxide:
Remarks : No data available
Repeated dose toxicity
Components:
dimethyl phthalate:
Species : Rat
NOAEL : 770 mg/kg
Application Route : Oral
Exposure time : 16 w
Method : OECD Test Guideline 408
2-Butanone, peroxide:
Species : Rat
NOAEL : 200 mg/kg
Application Route : oral (gavage)
Exposure time : 28 d
Method : OECD Test Guideline 407
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
20 / 30
Repeated dose toxicity –
Assessment
: Harmful if swallowed., Harmful if inhaled.
Hydrogen peroxide:
Species : Mouse, female
NOAEL : 37 mg/kg
Application Route : oral (drinking water)
Exposure time : 90 d
Remarks : Hydrogen peroxide (H2O2), 35%
Species : Mouse, males
NOAEL : 26 mg/kg
Application Route : oral (drinking water)
Exposure time : 90
Remarks : Hydrogen peroxide (H2O2), 35%
Aspiration toxicity
Not classified due to lack of data.
Components:
dimethyl phthalate:
No aspiration toxicity classification
Trimethylpentanediol isobutyrate:
Not classified due to data which are conclusive although insufficient for classification.
Hydrogen peroxide:
Based on available data, the classification criteria are not met.
Further information
Product:
Remarks : No data available
Components:
dimethyl phthalate:
Remarks : No data available
Trimethylpentanediol isobutyrate:
Remarks : No data available
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
21 / 30
SECTION 12. ECOLOGICAL INFORMATION
Ecotoxicity
Components:
dimethyl phthalate:
Toxicity to fish
: LC50 (Pimephales promelas (fathead minnow)): 39 mg/l
Exposure time: 96 h
Toxicity to daphnia and other
aquatic invertebrates
: LC50 (Daphnia magna (Water flea)): > 52 mg/l
Exposure time: 48 h
Toxicity to algae/aquatic
plants
: EC50 (Desmodesmus subspicatus (green algae)): 260 mg/l
Exposure time: 72 h
Toxicity to fish (Chronic tox-
icity)
: NOEC (Oncorhynchus mykiss (rainbow trout)): 11 mg/l
Exposure time: 102 d
Method: OECD Test Guideline 210
LOEC (Oncorhynchus mykiss (rainbow trout)): 24 mg/l
Exposure time: 102 d
Method: OECD Test Guideline 210
Toxicity to daphnia and other
aquatic invertebrates (Chron-
ic toxicity)
: NOEC (Daphnia magna (Water flea)): 9.6 mg/l
Exposure time: 21 d
LOEC (Daphnia magna (Water flea)): 23 mg/l
Exposure time: 21 d
Toxicity to microorganisms
: EC50: 4,100 mg/l
Exposure time: 0.5 h
Method: OECD Test Guideline 209
2-Butanone, peroxide:
Toxicity to fish
: LC50 (Poecilia reticulata (guppy)): 44.2 mg/l
Exposure time: 96 h
Method: OECD Test Guideline 203
NOEC (Poecilia reticulata (guppy)): 18 mg/l
Exposure time: 96 h
Method: OECD Test Guideline 203
Toxicity to daphnia and other
aquatic invertebrates
: EC50 (Daphnia magna (Water flea)): 39 mg/l
Exposure time: 48 h
Method: OECD Test Guideline 202
NOEC (Daphnia magna (Water flea)): 26.7 mg/l
Method: OECD Test Guideline 202
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
22 / 30
Toxicity to algae/aquatic
plants
: EC50 (Pseudokirchneriella subcapitata (green algae)): 5.6
mg/l
Exposure time: 72 h
Method: OECD Test Guideline 201
NOEC (Pseudokirchneriella subcapitata (green algae)): 2.1
mg/l
Exposure time: 72 h
Method: OECD Test Guideline 201
Toxicity to microorganisms
: EC50 (Bacteria): 48 mg/l
Exposure time: 0.5 h
Method: OECD Test Guideline 209
Trimethylpentanediol isobutyrate:
Toxicity to fish
: NOEC (Fish): >= 6 mg/l
Exposure time: 96 h
Method: OECD Test Guideline 203
Toxicity to daphnia and other
aquatic invertebrates
: EC50 (Daphnia): >= 1.46 mg/l
Exposure time: 48 h
NOEC (Daphnia): 0.7 mg/l
Exposure time: 21 d
Toxicity to algae/aquatic
plants
: EC50 (Chlorella pyrenoidosa): > 7.49 mg/l
Exposure time: 72 h
Method: OECD Test Guideline 201
Toxicity to daphnia and other
aquatic invertebrates (Chron-
ic toxicity)
: LOEC (Daphnia magna (Water flea)): 0.7 mg/l
Exposure time: 21 d
Ecotoxicology Assessment
Acute aquatic toxicity
: This product has no known ecotoxicological effects.
Chronic aquatic toxicity
: Harmful to aquatic life with long lasting effects.
Butanone:
Toxicity to fish
: LC50 (Pimephales promelas (fathead minnow)): 2,993 mg/l
Exposure time: 96 h
Method: OECD Test Guideline 203
Toxicity to daphnia and other
aquatic invertebrates
: EC50 (Daphnia magna (Water flea)): 308 mg/l
Exposure time: 48 h
Method: OECD Test Guideline 202
Toxicity to algae/aquatic : EC50 (Pseudokirchneriella subcapitata (green algae)): 2,029
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
23 / 30
plants
mg/l
Exposure time: 96 h
Method: OECD Test Guideline 201
Toxicity to microorganisms
: NOEC (Pseudomonas putida): 1,150 mg/l
Exposure time: 16 h
Method: DIN 38 412 Part 8
Hydrogen peroxide:
Toxicity to fish
: LC50 (Pimephales promelas (fathead minnow)): 16.4 mg/l
Exposure time: 96 h
Toxicity to daphnia and other
aquatic invertebrates
: LC50 (Daphnia pulex (Water flea)): 2.4 mg/l
Exposure time: 48 h
Toxicity to algae/aquatic
plants
: EC50 (Skeletonema costatum (marine diatom)): 1.38 mg/l
Exposure time: 72 h
NOEC (Skeletonema costatum (marine diatom)): 0.63 mg/l
Exposure time: 72 h
Toxicity to daphnia and other
aquatic invertebrates (Chron-
ic toxicity)
: NOEC (Daphnia magna (Water flea)): 0.63 mg/l
Exposure time: 21 d
Toxicity to microorganisms
: EC50 (activated sludge): > 1,000 mg/l
Exposure time: 3 h
Method: OECD Test Guideline 209
Persistence and degradability
Components:
dimethyl phthalate:
Biodegradability
: Result: Readily biodegradable.
Method: OECD Test Guideline 301E
2-Butanone, peroxide:
Biodegradability
: Result: Readily biodegradable.
Method: OECD Test Guideline 301D
Trimethylpentanediol isobutyrate:
Biodegradability
: Result: rapidly biodegradable
Exposure time: 28 d
Method: OECD Test Guideline 301B
Butanone:
Biodegradability : Result: Readily biodegradable.
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
24 / 30
Method: OECD Test Guideline 301D
Hydrogen peroxide:
Biodegradability
: Result: Readily biodegradable.
Bioaccumulative potential
Components:
dimethyl phthalate:
Bioaccumulation
: Bioconcentration factor (BCF): 57
Method: OECD Test Guideline 305
Partition coefficient: n-
octanol/water
: log Pow: 1.54
2-Butanone, peroxide:
Partition coefficient: n-
octanol/water
: log Pow: < 0.3 (25 C / 25 C)
Trimethylpentanediol isobutyrate:
Bioaccumulation
: Species: Fish
Bioconcentration factor (BCF): 1.95
Partition coefficient: n-
octanol/water
: log Pow: 4.91 (25 C / 25 C)
Butanone:
Partition coefficient: n-
octanol/water
: log Pow: 0.3 (40 C / 40 C)
Hydrogen peroxide:
Partition coefficient: n-
octanol/water
: log Pow: -1.57 (20 C / 20 C)
Remarks: Information refers to the main ingredient.
Calculation
Mobility in soil
No data available
Other adverse effects
Product:
Ozone-Depletion Potential
: Regulation: 40 CFR Protection of Environment; Part 82 Pro-
tection of Stratospheric Ozone - CAA Section 602 Class I
Substances
Remarks: This product neither contains, nor was manufac-
tured with a Class I or Class II ODS as defined by the U.S.
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
25 / 30
Clean Air Act Section 602 (40 CFR 82, Subpt. A, App.A + B).
Additional ecological infor-
mation
: An environmental hazard cannot be excluded in the event of
unprofessional handling or disposal.
Toxic to aquatic life.
Components:
dimethyl phthalate:
Additional ecological infor-
mation
: No data available
SECTION 13. DISPOSAL CONSIDERATIONS
Disposal methods
Waste from residues : Dispose of wastes in an approved waste disposal facility.
The product should not be allowed to enter drains, water
courses or the soil.
Do not contaminate ponds, waterways or ditches with
chemical or used container.
Contaminated packaging
: Dispose of in accordance with local regulations.
Clean container with water.
Dispose of contents/ container to an approved waste disposal
plant.
Empty remaining contents.
Dispose of as unused product.
Do not re-use empty containers.
Do not burn, or use a cutting torch on, the empty drum.
SECTION 14. TRANSPORT INFORMATION
International Regulations
UNRTDG
UN number : UN 3105
Proper shipping name : ORGANIC PEROXIDE TYPE D, LIQUID
(METHYL ETHYL KETONE PEROXIDE(S) )
Class : 5.2
Packing group : Not assigned by regulation
Labels : 5.2
Environmentally hazardous : no
IATA-DGR
UN/ID No. : UN 3105
Proper shipping name : Organic peroxide type D, liquid
(Methyl ethyl ketone peroxide(s))
Class : 5.2
Packing group : Not assigned by regulation
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
26 / 30
Labels : Organic Peroxides, Keep Away From Heat
Packing instruction (cargo
aircraft)
: 570
Packing instruction (passen-
ger aircraft)
: 570
IMDG-Code
UN number : UN 3105
Proper shipping name : ORGANIC PEROXIDE TYPE D, LIQUID
(METHYL ETHYL KETONE PEROXIDE(S) )
Class : 5.2
Packing group : Not assigned by regulation
Labels : 5.2
EmS Code : F-J, S-R
Marine pollutant : no
Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code
Not applicable for product as supplied.
Domestic regulation
49 CFR
UN/ID/NA number : UN 3105
Proper shipping name : Organic peroxide type D, liquid
(Methyl ethyl ketone peroxide(s), <=45%)
Class : 5.2
Packing group : Not assigned by regulation
Labels : ORGANIC PEROXIDE
ERG Code : 145
Marine pollutant : no
Special precautions for user
The transport classification(s) provided herein are for informational purposes only, and solely
based upon the properties of the unpackaged material as it is described within this Safety Data
Sheet. Transportation classifications may vary by mode of transportation, package sizes, and
variations in regional or country regulations.
SECTION 15. REGULATORY INFORMATION
CERCLA Reportable Quantity
Components CAS-No. Component RQ
(lbs)
Calculated product RQ
(lbs)
2-Butanone, peroxide 1338-23-4 10 29
Butanone 78-93-3 5000 5000 (D035)
Butanone 78-93-3 100 100 (F005)
SARA 304 Extremely Hazardous Substances Reportable Quantity
Listed substances in the product are at low enough levels to not be expected to exceed the RQ
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
27 / 30
SARA 302 Extremely Hazardous Substances Threshold Planning Quantity
Components CAS-No. Component TPQ (lbs)
Hydrogen peroxide 7722-84-1 1000
SARA 311/312 Hazards
: Flammable (gases, aerosols, liquids, or solids)
Organic peroxides
Acute toxicity (any route of exposure)
Reproductive toxicity
Skin corrosion or irritation
Serious eye damage or eye irritation
SARA 313
: The following components are subject to reporting levels
established by SARA Title III, Section 313:
dimethyl
phthalate
131-11-3
Clean Air Act
This product neither contains, nor was manufactured with a Class I or Class II ODS as defined by
the U.S. Clean Air Act Section 602 (40 CFR 82, Subpt. A, App.A + B).
The following chemical(s) are listed as HAP under the U.S. Clean Air Act, Section 112 (40 CFR
61):
dimethyl phthalate 131-11-3
This product does not contain any chemicals listed under the U.S. Clean Air Act Section 112(r) for
Accidental Release Prevention (40 CFR 68.130, Subpart F).
The following chemical(s) are listed under the U.S. Clean Air Act Section 111 SOCMI Intermedi-
ate or Final VOC's (40 CFR 60.489):
Butanone 78-93-3
Clean Water Act
This product does not contain any Hazardous Substances listed under the U.S. CleanWater Act,
Section 311, Table 116.4A.
This product does not contain any Hazardous Chemicals listed under the U.S. CleanWater Act,
Section 311, Table 117.3.
This product contains the following toxic pollutants listed under the U.S. Clean Water Act Section
307
dimethyl phthalate 131-11-3
This product contains the following priority pollutants related to the U.S. Clean Water Act:
dimethyl phthalate 131-11-3
California Prop. 65
This product does not contain any chemicals known to the State of California to cause cancer,
birth, or any other reproductive defects.
International Regulations
The ingredients of this product are reported in the following inventories:
TCSI (TW)
:
On the inventory, or in compliance with the inventory
TSCA (US)
:
All substances listed as active on the TSCA inventory
AIIC (AU) : All components are listed on the inventory, regulatory
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
28 / 30
obligations/restrictions apply
DSL (CA)
:
All components of this product are on the Canadian DSL
ENCS (JP)
:
On the inventory, or in compliance with the inventory
ISHL (JP)
:
On the inventory, or in compliance with the inventory
KECI (KR)
:
On the inventory, or in compliance with the inventory
PICCS (PH)
:
On the inventory, or in compliance with the inventory
IECSC (CN)
:
On the inventory, or in compliance with the inventory
TSCA list
No substances are subject to a Significant New Use Rule.
No substances are subject to TSCA 12(b) export notification requirements.
SECTION 16. OTHER INFORMATION
Further information
This material safety datasheet only contains information relating to safety and does not replace
any product information or product specification.
These safety instructions also apply to empty packaging which may still contain product residues.
The hazards on the label also apply to residues in the container.
Sources of key data used to
compile the Material Safety
Data Sheet
: Internal technical data, data from raw material SDSs, OECD
eChem Portal search results and European Chemicals Agen-
cy, http://echa.europa.eu/
Revision Date : 05/13/2024
Full text of other abbreviations
ACGIH : USA. ACGIH Threshold Limit Values (TLV)
ACGIH BEI : ACGIH - Biological Exposure Indices (BEI)
NIOSH REL : USA. NIOSH Recommended Exposure Limits
OSHA P0 : USA. Table Z-1-A Limits for Air Contaminants (1989 vacated
values)
OSHA Z-1 : USA. Occupational Exposure Limits (OSHA) - Table Z-1 Lim-
its for Air Contaminants
ACGIH / TWA : 8-hour, time-weighted average
ACGIH / STEL : Short-term exposure limit
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
29 / 30
ACGIH / C : Ceiling limit
NIOSH REL / TWA : Time-weighted average concentration for up to a 10-hour
workday during a 40-hour workweek
NIOSH REL / ST : STEL - 15-minute TWA exposure that should not be exceeded
at any time during a workday
NIOSH REL / C : Ceiling value not be exceeded at any time.
OSHA P0 / TWA : 8-hour time weighted average
OSHA P0 / STEL : Short-term exposure limit
OSHA P0 / C : Ceiling limit
OSHA Z-1 / TWA : 8-hour time weighted average
AIIC - Australian Inventory of Industrial Chemicals; ASTM - American Society for the Testing of
Materials; bw - Body weight; CERCLA - Comprehensive Environmental Response, Compensation,
and Liability Act; CMR - Carcinogen, Mutagen or Reproductive Toxicant; DIN - Standard of the
German Institute for Standardisation; DOT - Department of Transportation; DSL - Domestic Sub-
stances List (Canada); ECx - Concentration associated with x% response; EHS - Extremely Haz-
ardous Substance; ELx - Loading rate associated with x% response; EmS - Emergency Schedule;
ENCS - Existing and New Chemical Substances (Japan); ErCx - Concentration associated with
x% growth rate response; ERG - Emergency Response Guide; GHS - Globally Harmonized Sys-
tem; GLP - Good Laboratory Practice; HMIS - Hazardous Materials Identification System; IARC -
International Agency for Research on Cancer; IATA - International Air Transport Association; IBC
- International Code for the Construction and Equipment of Ships carrying Dangerous Chemicals
in Bulk; IC50 - Half maximal inhibitory concentration; ICAO - International Civil Aviation Organiza-
tion; IECSC - Inventory of Existing Chemical Substances in China; IMDG - International Maritime
Dangerous Goods; IMO - International Maritime Organization; ISHL - Industrial Safety and Health
Law (Japan); ISO - International Organisation for Standardization; KECI - Korea Existing Chemi-
cals Inventory; LC50 - Lethal Concentration to 50 % of a test population; LD50 - Lethal Dose to
50% of a test population (Median Lethal Dose); MARPOL - International Convention for the Pre-
vention of Pollution from Ships; MSHA - Mine Safety and Health Administration; n.o.s. - Not Oth-
erwise Specified; NFPA - National Fire Protection Association; NO(A)EC - No Observed (Adverse)
Effect Concentration; NO(A)EL - No Observed (Adverse) Effect Level; NOELR - No Observable
Effect Loading Rate; NTP - National Toxicology Program; NZIoC - New Zealand Inventory of
Chemicals; OECD - Organization for Economic Co-operation and Development; OPPTS - Office
of Chemical Safety and Pollution Prevention; PBT - Persistent, Bioaccumulative and Toxic sub-
stance; PICCS - Philippines Inventory of Chemicals and Chemical Substances; (Q)SAR - (Quanti-
tative) Structure Activity Relationship; RCRA - Resource Conservation and Recovery Act;
REACH - Regulation (EC) No 1907/2006 of the European Parliament and of the Council concern-
ing the Registration, Evaluation, Authorisation and Restriction of Chemicals; RQ - Reportable
Quantity; SADT - Self-Accelerating Decomposition Temperature; SARA - Superfund Amend-
ments and Reauthorization Act; SDS - Safety Data Sheet; TCSI - Taiwan Chemical Substance
Inventory; TECI - Thailand Existing Chemicals Inventory; TSCA - Toxic Substances Control Act
(United States); UN - United Nations; UNRTDG - United Nations Recommendations on the
Transport of Dangerous Goods; vPvB - Very Persistent and Very Bioaccumulative
The information provided in this Safety Data Sheet is correct to the best of our knowledge, infor-
mation and belief at the date of its publication. The information given is designed only as a guid-
ance for safe handling, use, processing, storage, transportation, disposal and release and is not
to be considered a warranty or quality specification. The information relates only to the specific
material designated and may not be valid for such material used in combination with any other
materials or in any process, unless specified in the text.
US / Z8
SAFETY DATA SHEET
according to the OSHA Hazard Communication Standard
NOROX
MEKP-925 FR
Version
1.2
Revision Date:
05/13/2024
SDS Number:
600000001112
Date of last issue: 04/08/2024
Date of first issue: 02/05/2024
30 / 30
by | Sep 27, 2025
SAFETY DATA SHEET
COD
NOROX MEKP-925 _
UNITED INITIATORS
Version Revision Date: SDS Number: Date of last issue: 12/04/2019
3.1 06/30/2021 600000000112 Date of first issue: 09/21/2016
SECTION 1. IDENTIFICATION
Trade name : NOROX*MEKP-925
Manufacturer or supplier’s details
Company name of supplier : United Initiators, Inc.
Address : 555 Garden Street
Elyria OH 44035 USA
Telephone 1 +1-440-323-3112
Telefax : +1-440-323-2659
Emergency telephone : CHEMTREC US (24h): +1-800-424-9300
CHEMTREC WORLD (24h): +1-703-527-3887
E-mail address of person : cs-initiators.nafta@united-in.com
responsible for the SDS
Recommended use of the chemical and restrictions on use
Recommended use : Hardener
SECTION 2. HAZARDS IDENTIFICATION
GHS classification in accordance with the OSHA Hazard Communication Standard (29 CFR
1910.1200)
Flammable liquids : Category 4
Organic peroxides : Type D
Acute toxicity (Oral) : Category 4
Acute toxicity (Inhalation) : Category 4
Skin corrosion : Category 1B
Serious eye damage : Category 1
Reproductive toxicity : Category 2
Short-term (acute) aquatic : Category 2
hazard
GHS label elements
1/26
by | Sep 27, 2025
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
1 / 26
SECTION 1. IDENTIFICATION
Trade name
: NOROX
MEKP-900
Manufacturer or supplier’s details
Company name of supplier
: United Initiators, Inc.
Address
: 555 Garden Street
Elyria OH 44035 USA
Telephone
: +1-440-323-3112
Telefax
: +1-440-323-2659
Emergency telephone
: CHEMTREC US (24h): +1-800-424-9300
CHEMTREC WORLD (24h): +1-703-527-3887
E-mail address of person
responsible for the SDS
: cs-initiators.nafta@united-in.com
Recommended use of the chemical and restrictions on use
Recommended use
: Hardener
SECTION 2. HAZARDS IDENTIFICATION
GHS classification in accordance with the OSHA Hazard Communication Standard (29 CFR
1910.1200)
Flammable liquids
: Category 4
Organic peroxides
: Type D
Acute toxicity (Oral)
: Category 4
Acute toxicity (Inhalation)
: Category 4
Skin corrosion
: Category 1B
Serious eye damage
: Category 1
Reproductive toxicity
: Category 2
Short-term (acute) aquatic
hazard
: Category 2
GHS label elements
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
2 / 26
Hazard pictograms
:
Signal Word
: Danger
Hazard Statements
: H227 Combustible liquid.
H242 Heating may cause a fire.
H302 + H332 Harmful if swallowed or if inhaled.
H314 Causes severe skin burns and eye damage.
H361d Suspected of damaging the unborn child.
H401 Toxic to aquatic life.
Precautionary Statements
:
Prevention:
P201 Obtain special instructions before use.
P202 Do not handle until all safety precautions have been read
and understood.
P210 Keep away from heat/ sparks/ open flames/ hot surfaces.
No smoking.
P220 Keep/Store away from clothing/ strong acids, bases,
heavy metal salts and other reducing substances /combustible
materials.
P234 Keep only in original container.
P261 Avoid breathing dust/ fume/ gas/ mist/ vapors/ spray.
P264 Wash skin thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P271 Use only outdoors or in a well-ventilated area.
P273 Avoid release to the environment.
P280 Wear protective gloves/ protective clothing/ eye protection/
face protection.
Response:
P301 + P312 + P330 IF SWALLOWED: Call a POISON
CENTER/ doctor if you feel unwell. Rinse mouth.
P301 + P330 + P331 IF SWALLOWED: Rinse mouth. Do NOT
induce vomiting.
P303 + P361 + P353 IF ON SKIN (or hair): Take off immediately
all contaminated clothing. Rinse skin with water/ shower.
P304 + P340 + P310 IF INHALED: Remove person to fresh air
and keep comfortable for breathing. Immediately call a POISON
CENTER/ doctor.
P305 + P351 + P338 + P310 IF IN EYES: Rinse cautiously with
water for several minutes. Remove contact lenses, if present
and easy to do. Continue rinsing. Immediately call a POISON
CENTER/ doctor.
P308 + P313 IF exposed or concerned: Get medical advice/
attention.
P363 Wash contaminated clothing before reuse.
P370 + P378 In case of fire: Use water spray, alcohol-resistant
foam, dry chemical or carbon dioxide to extinguish.
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
3 / 26
Storage:
P405 Store locked up.
P410 Protect from sunlight.
P411 + P235 Store at temperatures not exceeding < 100 F/ <
38 C. Keep cool.
P420 Store away from other materials.
Disposal:
P501 Dispose of contents/ container to an approved waste dis-
posal plant.
Other hazards
None known.
SECTION 3. COMPOSITION/INFORMATION ON INGREDIENTS
Substance / Mixture
: Mixture
Chemical nature
: Organic Peroxide
Liquid mixture
Components
Chemical name CAS-No. Concentration (% w/w)
dimethyl phthalate 131-11-3
>= 40 – < 45
2-Butanone, peroxide 1338-23-4
>= 30 – < 35
Trimethylpentanediol isobutyrate 6846-50-0
>= 20 – < 25
Butanone 78-93-3
>= 1 – < 5
Hydrogen peroxide 7722-84-1
>= 1 – < 5
Actual concentration is withheld as a trade secret
SECTION 4. FIRST AID MEASURES
General advice
: Move out of dangerous area.
Show this material safety data sheet to the doctor in
attendance.
Do not leave the victim unattended.
Symptoms of poisoning may appear several hours later.
Call a physician immediately.
If inhaled
: Call a physician or poison control center immediately.
If unconscious, place in recovery position and seek medical
advice.
Keep respiratory tract clear.
Call a physician immediately.
If breathed in, move person into fresh air.
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
4 / 26
In case of skin contact
: In case of contact, immediately flush skin with plenty of water
for at least 15 minutes while removing contaminated clothing
and shoes.
Wash contaminated clothing before re-use.
If on skin, rinse well with water.
If on clothes, remove clothes.
If symptoms persist, call a physician.
In case of eye contact
: Small amounts splashed into eyes can cause irreversible
tissue damage and blindness.
In the case of contact with eyes, rinse immediately with plenty
of water and seek medical advice.
Continue rinsing eyes during transport to hospital.
Remove contact lenses.
Protect unharmed eye.
Keep eye wide open while rinsing.
If eye irritation persists, consult a specialist.
If swallowed
: Keep respiratory tract clear.
Do NOT induce vomiting.
Call a physician immediately.
Rinse mouth thoroughly with water.
Most important symptoms
and effects, both acute and
delayed
: Harmful if swallowed or if inhaled.
Causes serious eye damage.
Suspected of damaging the unborn child.
Causes severe burns.
Protection of first-aiders
: First Aid responders should pay attention to self-protection
and use the recommended protective clothing
Notes to physician
: Treat symptomatically and supportively.
SECTION 5. FIRE-FIGHTING MEASURES
Suitable extinguishing media
: Water spray jet
Alcohol-resistant foam
Carbon dioxide (CO2)
Dry chemical
Unsuitable extinguishing
media
: High volume water jet
Specific hazards during fire
fighting
: Contact with incompatible materials or exposure to
temperatures exceeding SADT may result in a self-
accelerating decomposition reaction with release of flammable
vapors which may auto-ignite.
The product burns violently.
Flash back possible over considerable distance.
Vapors may form explosive mixtures with air.
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
5 / 26
Cool closed containers exposed to fire with water spray.
Specific extinguishing meth-
ods
: Do not use a solid water stream as it may scatter and spread
fire.
Remove undamaged containers from fire area if it is safe to do
so.
Use water spray to cool unopened containers.
Further information : Collect contaminated fire extinguishing water separately. This
must not be discharged into drains.
Fire residues and contaminated fire extinguishing water must
be disposed of in accordance with local regulations.
Use extinguishing measures that are appropriate to local
circumstances and the surrounding environment.
Special protective equipment
for fire-fighters
: Wear self-contained breathing apparatus for firefighting if
necessary.
Use personal protective equipment.
SECTION 6. ACCIDENTAL RELEASE MEASURES
Personal precautions, protec-
tive equipment and emer-
gency procedures
: Use personal protective equipment.
Remove all sources of ignition.
Follow safe handling advice and personal protective
equipment recommendations.
Beware of vapors accumulating to form explosive
concentrations. Vapors can accumulate in low areas.
Never return spills in original containers for re-use.
Treat recovered material as described in the section "Disposal
considerations".
Environmental precautions
: Prevent product from entering drains.
Prevent further leakage or spillage if safe to do so.
If the product contaminates rivers and lakes or drains inform
respective authorities.
Methods and materials for
containment and cleaning up
: Contact with incompatible substances can cause
decomposition at or below SADT.
Clear spills immediately.
Suppress (knock down) gases/vapors/mists with a water spray
jet.
To clean the floor and all objects contaminated by this
material, use plenty of water.
Soak up with inert absorbent material.
Isolate waste and do not reuse.
Non-sparking tools should be used.
Local or national regulations may apply to releases and
disposal of this material, as well as those materials and items
employed in the cleanup of releases. You will need to
determine which regulations are applicable.
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
6 / 26
SECTION 7. HANDLING AND STORAGE
Technical measures
: See Engineering measures under EXPOSURE
CONTROLS/PERSONAL PROTECTION section.
Advice on protection against
fire and explosion
: Keep away from heat and sources of ignition.
Use only explosion-proof equipment.
Keep away from combustible material.
Advice on safe handling
: Do not swallow.
Do not breathe vapors/dust.
Avoid contact with skin and eyes.
Avoid formation of aerosol.
Take precautionary measures against static discharges.
Never return any product to the container from which it was
originally removed.
Provide sufficient air exchange and/or exhaust in work rooms.
Avoid confinement.
Keep away from heat, hot surfaces, sparks, open flames and
other ignition sources. No smoking.
Smoking, eating and drinking should be prohibited in the
application area.
Wash thoroughly after handling.
For personal protection see section 8.
Protect from contamination.
Conditions for safe storage
: Avoid impurities (e.g. rust, dust, ash), risk of decomposition.
Electrical installations / working materials must comply with
the technological safety standards.
Containers which are opened must be carefully resealed and
kept upright to prevent leakage.
Store in original container.
Keep containers tightly closed in a cool, well-ventilated place.
Store in accordance with the particular national regulations.
Materials to avoid
: Keep away from strong acids, bases, heavy metal salts and
other reducing substances.
Recommended storage tem-
perature
: < 100 F
< 38 C
Further information on stor-
age stability
: No decomposition if stored normally.
SECTION 8. EXPOSURE CONTROLS/PERSONAL PROTECTION
Ingredients with workplace control parameters
Components CAS-No. Value type
(Form of
Control parame-
ters / Permissible
Basis
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
7 / 26
exposure) concentration
dimethyl phthalate 131-11-3 TWA 5 mg/m3 ACGIH
TWA 5 mg/m3 NIOSH REL
TWA 5 mg/m3 OSHA Z-1
TWA 5 mg/m3 OSHA P0
2-Butanone, peroxide 1338-23-4 C 0.2 ppm ACGIH
C 0.2 ppm
1.5 mg/m3
NIOSH REL
C 0.7 ppm
5 mg/m3
OSHA P0
Butanone 78-93-3 TWA 200 ppm ACGIH
STEL 300 ppm ACGIH
TWA 200 ppm
590 mg/m3
NIOSH REL
ST 300 ppm
885 mg/m3
NIOSH REL
TWA 200 ppm
590 mg/m3
OSHA Z-1
TWA 200 ppm
590 mg/m3
OSHA P0
STEL 300 ppm
885 mg/m3
OSHA P0
Hydrogen peroxide 7722-84-1 TWA 1 ppm ACGIH
TWA 1 ppm
1.4 mg/m3
NIOSH REL
TWA 1 ppm
1.4 mg/m3
OSHA Z-1
TWA 1 ppm
1.4 mg/m3
OSHA P0
Biological occupational exposure limits
Components CAS-No. Control
parameters
Biological
specimen
Sam-
pling
time
Permissible
concentra-
tion
Basis
Butanone 78-93-3 methyl ethyl
ketone
Urine End of
shift (As
soon as
possible
after
exposure
ceases)
2 mg/l ACGIH
BEI
Engineering measures : Minimize workplace exposure concentrations.
Personal protective equipment
Respiratory protection
: In the case of dust or aerosol formation use respirator with an
approved filter.
Filter type
: ABEK-filter
Hand protection
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
8 / 26
Material : butyl-rubber
Break through time : 480 min
Glove thickness : 0.5 mm
Material : Nitrile rubber
Break through time : < 30 min
Glove thickness : 0.4 mm
Remarks
: Choose gloves to protect hands against chemicals depending
on the concentration and quantity of the hazardous
substance and specific to place of work.
For special applications, we recommend clarifying the
resistance to chemicals of the aforementioned protective
gloves with the glove manufacturer. Wash hands before
breaks and at the end of workday.
Eye protection
: Tightly fitting safety goggles
Please wear suitable protective goggles. Also wear face
protection if there is a splash hazard.
Ensure that eyewash stations and safety showers are close
to the workstation location.
Skin and body protection
: Select appropriate protective clothing based on chemical
resistance data and an assessment of the local exposure
potential.
Hygiene measures
: Keep away from food and drink.
When using do not eat or drink.
When using do not smoke.
Wash hands before breaks and immediately after handling
the product.
SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES
Appearance
: liquid
Color
: colorless
Odor
: slight
pH
: No data available
Melting point/range
: No data available
Boiling point/boiling range
: Decomposition: Decomposes below the boiling point.
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
9 / 26
Flash point
: 76 C
Evaporation rate
: No data available
Flammability (solid, gas)
: Not applicable
Upper explosion limit / Upper
flammability limit
: No data available
Lower explosion limit / Lower
flammability limit
: No data available
Vapor pressure
: No data available
Relative vapor density
: > 1
Density
: 1.1 g/cm3
Solubility(ies)
Water solubility
: soluble
Partition coefficient: n-
octanol/water
: No data available
Self-Accelerating decomposi-
tion temperature (SADT)
: 60 C
SADT-Self Accelerating Decomposition Temperature. Lowest
temperature at which the tested package size will undergo a
self-accelerating decomposition reaction.
Viscosity
Viscosity, dynamic
: No data available
Viscosity, kinematic
: not determined
Oxidizing properties
: The substance or mixture is not classified as oxidizing.
Organic peroxide
SECTION 10. STABILITY AND REACTIVITY
Reactivity
: Stable under recommended storage conditions.
Chemical stability
: Stable under recommended storage conditions.
Possibility of hazardous reac-
tions
: Vapors may form explosive mixture with air.
Conditions to avoid
: Protect from contamination.
Contact with incompatible substances can cause
decomposition at or below SADT.
Heat, flames and sparks.
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
10 / 26
Avoid confinement.
Incompatible materials
: Accelerators, strong acids and bases, heavy metals and
heavy metal salts, reducing agents
Hazardous decomposition
products
: Irritant, caustic, flammable, noxious/toxic gases and vapours
can develop in the case of fire and decomposition
SECTION 11. TOXICOLOGICAL INFORMATION
Acute toxicity
Harmful if swallowed or if inhaled.
Product:
Acute oral toxicity
: Acute toxicity estimate: 1,372 mg/kg
Method: Calculation method
Acute inhalation toxicity
: Acute toxicity estimate: 4.17 mg/l
Exposure time: 4 h
Test atmosphere: dust/mist
Method: Calculation method
Acute dermal toxicity
: Acute toxicity estimate: > 5,000 mg/kg
Method: Calculation method
Components:
dimethyl phthalate:
Acute oral toxicity
: LD50 (Rat): > 5,000 mg/kg
Acute inhalation toxicity
: (Rat): > 10.4 mg/l
Exposure time: 6 h
Test atmosphere: vapor
Remarks: No mortality observed at this dose.
Acute dermal toxicity
: LD50 (Rabbit): > 12,000 mg/kg
2-Butanone, peroxide:
Acute oral toxicity
: Acute toxicity estimate: 500 mg/kg
Method: Expert judgment
Acute inhalation toxicity
: Acute toxicity estimate: 1.5 mg/l
Exposure time: 4 h
Test atmosphere: dust/mist
Method: Expert judgment
Assessment: The component/mixture is moderately toxic after
short term inhalation.
Remarks: Based on data from similar materials
Acute dermal toxicity : Acute toxicity estimate: 2,500 mg/kg
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
11 / 26
Method: Expert judgment
Trimethylpentanediol isobutyrate:
Acute oral toxicity
: LD50 (Rat): > 2,000 mg/kg
Method: Expert judgment
Assessment: The substance or mixture has no acute oral tox-
icity
Acute inhalation toxicity
: LCLo (Rat): > 0.12 mg/l
Exposure time: 6 h
Test atmosphere: dust/mist
Method: Expert judgment
Assessment: The substance or mixture has no acute inhala-
tion toxicity
Remarks: No mortality observed at this dose.
Acute dermal toxicity
: LD50 (Guinea pig): > 2,000 mg/kg
Method: Expert judgment
Assessment: The substance or mixture has no acute dermal
toxicity
Butanone:
Acute oral toxicity
: LD50 (Rat): 2,193 mg/kg
Method: OECD Test Guideline 423
Acute inhalation toxicity
: Remarks: No data available
Acute dermal toxicity
: LD50 (Rabbit): > 5,000 mg/kg
Method: OECD Test Guideline 402
Remarks: Based on available data, the classification criteria
are not met.
Hydrogen peroxide:
Acute oral toxicity
: Acute toxicity estimate: 500.0 mg/kg
Method: Converted acute toxicity point estimate
Assessment: The component/mixture is moderately toxic after
single ingestion.
Acute inhalation toxicity
: LC50 (Rat): > 0.17 mg/l
Exposure time: 4 h
Test atmosphere: dust/mist
Assessment: The component/mixture is moderately toxic after
short term inhalation.
Remarks: Based on harmonised classification in EU regulation
1272/2008, Annex VI
Acute dermal toxicity
: LD50 (Rabbit): > 6,500 mg/kg
Skin corrosion/irritation
Causes severe burns.
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
12 / 26
Product:
Remarks : Extremely corrosive and destructive to tissue.
Components:
dimethyl phthalate:
Species : Rabbit
Method : Draize Test
Result : No skin irritation
2-Butanone, peroxide:
Species : Rabbit
Result : Causes burns.
Trimethylpentanediol isobutyrate:
Species : Guinea pig
Exposure time : 24 h
Result : No skin irritation
Remarks : Based on available data, the classification criteria are not met.
Butanone:
Species : Rabbit
Assessment : Repeated exposure may cause skin dryness or cracking.
Method : OECD Test Guideline 404
Result : No skin irritation
Hydrogen peroxide:
Result : Corrosive after 3 minutes or less of exposure
Serious eye damage/eye irritation
Causes serious eye damage.
Product:
Remarks : May cause irreversible eye damage.
Components:
dimethyl phthalate:
Species : Rabbit
Result : No eye irritation
Method : OECD Test Guideline 405
2-Butanone, peroxide:
Result : Irreversible effects on the eye
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
13 / 26
Trimethylpentanediol isobutyrate:
Species : Rabbit
Result : No eye irritation
Butanone:
Species : Rabbit
Result : Eye irritation
Method : OECD Test Guideline 405
Hydrogen peroxide:
Result : Irreversible effects on the eye
Respiratory or skin sensitization
Skin sensitization
Not classified based on available information.
Respiratory sensitization
Not classified based on available information.
Components:
dimethyl phthalate:
Species : Mouse
Method : OECD Test Guideline 429
Result : Does not cause skin sensitization.
2-Butanone, peroxide:
Species : Guinea pig
Method : OECD Test Guideline 406
Result : Does not cause skin sensitization.
Assessment : Harmful if swallowed., Harmful if inhaled.
Trimethylpentanediol isobutyrate:
Species : Guinea pig
Result : Does not cause skin sensitization.
Butanone:
Routes of exposure : Skin contact
Species : Guinea pig
Method : OECD Test Guideline 406
Result : Does not cause skin sensitization.
Germ cell mutagenicity
Not classified based on available information.
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
14 / 26
Components:
dimethyl phthalate:
Genotoxicity in vitro
: Method: OECD Test Guideline 471
Result: negative
Method: OECD Test Guideline 473
Result: negative
Method: OECD Test Guideline 476
Result: positive
Genotoxicity in vivo
: Test Type: Chromosomal aberration
Species: Rat
Application Route: Intraperitoneal
Result: negative
Test Type: Micronucleus test
Species: Mouse
Application Route: Intraperitoneal injection
Result: negative
2-Butanone, peroxide:
Genotoxicity in vitro
: Method: OECD Test Guideline 473
Result: negative
Method: OECD Test Guideline 471
Result: negative
Method: OECD Test Guideline 476
Result: negative
Trimethylpentanediol isobutyrate:
Genotoxicity in vitro
: Method: OECD Test Guideline 476
Result: negative
Test Type: Ames test
Result: negative
Method: OECD Test Guideline 473
Result: negative
Butanone:
Genotoxicity in vitro
: Method: OECD Test Guideline 471
Result: negative
Method: OECD Test Guideline 476
Result: negative
Method: OECD Test Guideline 473
Result: negative
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
15 / 26
Genotoxicity in vivo
: Species: Mouse
Application Route: Intraperitoneal
Method: OECD Test Guideline 474
Result: negative
Hydrogen peroxide:
Genotoxicity in vitro
: Test Type: Ames test
Result: negative
Genotoxicity in vivo
: Test Type: Mammalian erythrocyte micronucleus test (in vivo
cytogenetic assay)
Species: Mouse
Result: negative
Carcinogenicity
Not classified based on available information.
Components:
dimethyl phthalate:
Species : Rat
Application Route : Skin contact
Method : OECD Test Guideline 451
Result : negative
Remarks : Based on data from similar materials
2-Butanone, peroxide:
Remarks : This information is not available.
Hydrogen peroxide:
Carcinogenicity – Assess-
ment
: Carcinogenicity classification not possible from current data.
IARC No ingredient of this product present at levels greater than or equal to 0.1% is
identified as probable, possible or confirmed human carcinogen by IARC.
OSHA No component of this product present at levels greater than or equal to 0.1% is
on OSHA s list of regulated carcinogens.
NTP No ingredient of this product present at levels greater than or equal to 0.1% is
identified as a known or anticipated carcinogen by NTP.
Reproductive toxicity
Suspected of damaging the unborn child.
Components:
dimethyl phthalate:
Effects on fertility : Species: Rat
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
16 / 26
Application Route: oral (gavage)
Method: OECD Test Guideline 440
Result: negative
Effects on fetal development
: Species: Rat
Application Route: Ingestion
General Toxicity Maternal: NOAEL: 840 mg/kg body weight
Developmental Toxicity: NOAEL: 3,570 mg/kg body weight
Method: OECD Test Guideline 414
2-Butanone, peroxide:
Effects on fertility
: Species: Rat
Application Route: oral (gavage)
General Toxicity Parent: NOAEL: 50 mg/kg body weight
Method: OECD Test Guideline 421
Result: negative
Trimethylpentanediol isobutyrate:
Effects on fetal development
: Test Type: One-generation reproduction toxicity study
Species: Rat
Application Route: Ingestion
Result: negative
Reproductive toxicity – As-
sessment
: Suspected of damaging the unborn child., Some evidence of
adverse effects on development, based on animal
experiments.
Butanone:
Effects on fertility
: Species: Rat
Application Route: oral (drinking water)
General Toxicity Parent: NOAEL: 10,000 mg/l
General Toxicity F1: NOAEL: 10,000 mg/l
Method: OECD Test Guideline 416
Remarks: Based on data from similar materials
Species: Rat
Application Route: oral (drinking water)
General Toxicity Parent: LOAEL: 20,000 mg/l
Method: OECD Test Guideline 416
Remarks: Based on data from similar materials
Effects on fetal development
: Species: Rat
Application Route: Inhalation
General Toxicity Maternal: NOAEC: ca. 1,002 mg/kg body
weight
Teratogenicity: NOAEC Parent: ca. 1,002 mg/kg body weight
Method: OECD Test Guideline 414
Result: negative
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
17 / 26
STOT-single exposure
Not classified based on available information.
Components:
Butanone:
Assessment : May cause drowsiness or dizziness.
Hydrogen peroxide:
Assessment : May cause respiratory irritation.
STOT-repeated exposure
Not classified based on available information.
Repeated dose toxicity
Components:
dimethyl phthalate:
Species : Rat
NOAEL : 770 mg/kg
Application Route : Oral
Exposure time : 16 w
Method : OECD Test Guideline 408
2-Butanone, peroxide:
Species : Rat
NOAEL : 200 mg/kg
Application Route : oral (gavage)
Exposure time : 28 d
Method : OECD Test Guideline 407
Repeated dose toxicity –
Assessment
: Harmful if swallowed., Harmful if inhaled.
Hydrogen peroxide:
Species : Mouse
Application Route : Ingestion
Exposure time : 90 d
Symptoms : No adverse effects.
Aspiration toxicity
Not classified based on available information.
Components:
dimethyl phthalate:
No aspiration toxicity classification
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
18 / 26
Trimethylpentanediol isobutyrate:
Not classified due to data which are conclusive although insufficient for classification.
Further information
Product:
Remarks : No data available
Components:
dimethyl phthalate:
Remarks : No data available
SECTION 12. ECOLOGICAL INFORMATION
Ecotoxicity
Components:
dimethyl phthalate:
Toxicity to fish
: LC50 (Pimephales promelas (fathead minnow)): 39 mg/l
Exposure time: 96 h
Toxicity to daphnia and other
aquatic invertebrates
: LC50 (Daphnia magna (Water flea)): > 52 mg/l
Exposure time: 48 h
Toxicity to algae/aquatic
plants
: EC50 (Desmodesmus subspicatus (green algae)): 260 mg/l
Exposure time: 72 h
Toxicity to fish (Chronic tox-
icity)
: NOEC (Oncorhynchus mykiss (rainbow trout)): 11 mg/l
Exposure time: 102 d
Method: OECD Test Guideline 210
LOEC (Oncorhynchus mykiss (rainbow trout)): 24 mg/l
Exposure time: 102 d
Method: OECD Test Guideline 210
Toxicity to daphnia and other
aquatic invertebrates (Chron-
ic toxicity)
: NOEC (Daphnia magna (Water flea)): 9.6 mg/l
Exposure time: 21 d
LOEC (Daphnia magna (Water flea)): 23 mg/l
Exposure time: 21 d
Toxicity to microorganisms
: EC50: 4,100 mg/l
Exposure time: 0.5 h
Method: OECD Test Guideline 209
2-Butanone, peroxide:
Toxicity to fish : LC50 (Poecilia reticulata (guppy)): 44.2 mg/l
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
19 / 26
Exposure time: 96 h
Method: OECD Test Guideline 203
NOEC (Poecilia reticulata (guppy)): 18 mg/l
Exposure time: 96 h
Method: OECD Test Guideline 203
Toxicity to daphnia and other
aquatic invertebrates
: EC50 (Daphnia magna (Water flea)): 39 mg/l
Exposure time: 48 h
Method: OECD Test Guideline 202
NOEC (Daphnia magna (Water flea)): 26.7 mg/l
Method: OECD Test Guideline 202
Toxicity to algae/aquatic
plants
: EC50 (Pseudokirchneriella subcapitata (green algae)): 5.6
mg/l
Exposure time: 72 h
Method: OECD Test Guideline 201
NOEC (Pseudokirchneriella subcapitata (green algae)): 2.1
mg/l
Exposure time: 72 h
Method: OECD Test Guideline 201
Toxicity to microorganisms
: EC50 (Bacteria): 48 mg/l
Exposure time: 0.5 h
Method: OECD Test Guideline 209
Trimethylpentanediol isobutyrate:
Toxicity to fish
: NOEC (Fish): >= 6 mg/l
Exposure time: 96 h
Method: OECD Test Guideline 203
Toxicity to daphnia and other
aquatic invertebrates
: EC50 (Daphnia): >= 1.46 mg/l
Exposure time: 48 h
NOEC (Daphnia): 0.7 mg/l
Exposure time: 21 d
Toxicity to algae/aquatic
plants
: EC50 (Chlorella pyrenoidosa): > 7.49 mg/l
Exposure time: 72 h
Method: OECD Test Guideline 201
Toxicity to daphnia and other
aquatic invertebrates (Chron-
ic toxicity)
: LOEC (Daphnia magna (Water flea)): 0.7 mg/l
Exposure time: 21 d
Ecotoxicology Assessment
Acute aquatic toxicity
: This product has no known ecotoxicological effects.
Chronic aquatic toxicity
: Harmful to aquatic life with long lasting effects.
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
20 / 26
Butanone:
Toxicity to fish
: LC50 (Pimephales promelas (fathead minnow)): 2,993 mg/l
Exposure time: 96 h
Method: OECD Test Guideline 203
Toxicity to daphnia and other
aquatic invertebrates
: EC50 (Daphnia magna (Water flea)): 308 mg/l
Exposure time: 48 h
Method: OECD Test Guideline 202
Toxicity to algae/aquatic
plants
: EC50 (Pseudokirchneriella subcapitata (green algae)): 2,029
mg/l
Exposure time: 96 h
Method: OECD Test Guideline 201
Toxicity to microorganisms
: NOEC (Pseudomonas putida): 1,150 mg/l
Exposure time: 16 h
Method: DIN 38 412 Part 8
Hydrogen peroxide:
Toxicity to fish
: LC50 (Pimephales promelas (fathead minnow)): 16.4 mg/l
Exposure time: 96 h
Toxicity to daphnia and other
aquatic invertebrates
: LC50 (Daphnia pulex (Water flea)): 2.4 mg/l
Exposure time: 48 h
Toxicity to algae/aquatic
plants
: EC50 (Skeletonema costatum (marine diatom)): 1.38 mg/l
Exposure time: 72 h
NOEC (Skeletonema costatum (marine diatom)): 0.63 mg/l
Exposure time: 72 h
Toxicity to daphnia and other
aquatic invertebrates (Chron-
ic toxicity)
: NOEC (Daphnia magna (Water flea)): 0.63 mg/l
Exposure time: 21 d
Persistence and degradability
Components:
dimethyl phthalate:
Biodegradability
: Result: Readily biodegradable.
Method: OECD Test Guideline 301E
2-Butanone, peroxide:
Biodegradability
: Result: Readily biodegradable.
Method: OECD Test Guideline 301D
Trimethylpentanediol isobutyrate:
Biodegradability
: Result: rapidly biodegradable
Exposure time: 28 d
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
21 / 26
Method: OECD Test Guideline 301B
Butanone:
Biodegradability
: Result: Readily biodegradable.
Method: OECD Test Guideline 301D
Hydrogen peroxide:
Biodegradability
: Result: Readily biodegradable.
Bioaccumulative potential
Components:
dimethyl phthalate:
Bioaccumulation
: Bioconcentration factor (BCF): 57
Method: OECD Test Guideline 305
Partition coefficient: n-
octanol/water
: log Pow: 1.54
2-Butanone, peroxide:
Partition coefficient: n-
octanol/water
: log Pow: < 0.3 (25 C / 25 C)
Trimethylpentanediol isobutyrate:
Bioaccumulation
: Species: Fish
Bioconcentration factor (BCF): 1.95
Partition coefficient: n-
octanol/water
: log Pow: 4.91 (25 C / 25 C)
Butanone:
Partition coefficient: n-
octanol/water
: log Pow: 0.3 (40 C / 40 C)
Hydrogen peroxide:
Partition coefficient: n-
octanol/water
: log Pow: -1.57
Remarks: Calculation
Mobility in soil
No data available
Other adverse effects
Product:
Ozone-Depletion Potential
: Regulation: 40 CFR Protection of Environment; Part 82 Pro-
tection of Stratospheric Ozone - CAA Section 602 Class I
Substances
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
22 / 26
Remarks: This product neither contains, nor was manufac-
tured with a Class I or Class II ODS as defined by the U.S.
Clean Air Act Section 602 (40 CFR 82, Subpt. A, App.A + B).
Additional ecological infor-
mation
: An environmental hazard cannot be excluded in the event of
unprofessional handling or disposal.
Toxic to aquatic life.
Components:
dimethyl phthalate:
Additional ecological infor-
mation
: No data available
SECTION 13. DISPOSAL CONSIDERATIONS
Disposal methods
Waste from residues : The product should not be allowed to enter drains, water
courses or the soil.
Do not contaminate ponds, waterways or ditches with
chemical or used container.
Dispose of wastes in an approved waste disposal facility.
Contaminated packaging
: Empty remaining contents.
Dispose of as unused product.
Do not re-use empty containers.
Do not burn, or use a cutting torch on, the empty drum.
Dispose of in accordance with local regulations.
SECTION 14. TRANSPORT INFORMATION
International Regulations
UNRTDG
UN number : UN 3105
Proper shipping name : ORGANIC PEROXIDE TYPE D, LIQUID
(METHYL ETHYL KETONE PEROXIDE(S) )
Class : 5.2
Packing group : Not assigned by regulation
Labels : 5.2
IATA-DGR
UN/ID No. : UN 3105
Proper shipping name : Organic peroxide type D, liquid
(Methyl ethyl ketone peroxide(s))
Class : 5.2
Packing group : Not assigned by regulation
Labels : Organic Peroxides, Keep Away From Heat
Packing instruction (cargo
aircraft)
: 570
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
23 / 26
Packing instruction (passen-
ger aircraft)
: 570
IMDG-Code
UN number : UN 3105
Proper shipping name : ORGANIC PEROXIDE TYPE D, LIQUID
(METHYL ETHYL KETONE PEROXIDE(S) )
Class : 5.2
Packing group : Not assigned by regulation
Labels : 5.2
EmS Code : F-J, S-R
Marine pollutant : no
Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code
Not applicable for product as supplied.
Domestic regulation
49 CFR
UN/ID/NA number : UN 3105
Proper shipping name : Organic peroxide type D, liquid
(Methyl ethyl ketone peroxide(s), <=45%)
Class : 5.2
Packing group : Not assigned by regulation
Labels : ORGANIC PEROXIDE
ERG Code : 145
Marine pollutant : no
Special precautions for user
The transport classification(s) provided herein are for informational purposes only, and solely
based upon the properties of the unpackaged material as it is described within this Safety Data
Sheet. Transportation classifications may vary by mode of transportation, package sizes, and
variations in regional or country regulations.
SECTION 15. REGULATORY INFORMATION
CERCLA Reportable Quantity
Components CAS-No. Component RQ
(lbs)
Calculated product RQ
(lbs)
2-Butanone, peroxide 1338-23-4 10 29
SARA 304 Extremely Hazardous Substances Reportable Quantity
Components CAS-No. Component RQ
(lbs)
Calculated product RQ
(lbs)
Hydrogen peroxide 7722-84-1 1000 *
*: Calculated RQ exceeds reasonably attainable upper limit.
SARA 302 Extremely Hazardous Substances Threshold Planning Quantity
Components CAS-No. Component TPQ (lbs)
Hydrogen peroxide 7722-84-1 1000
SARA 311/312 Hazards
: Flammable (gases, aerosols, liquids, or solids)
Organic peroxides
Acute toxicity (any route of exposure)
Reproductive toxicity
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
24 / 26
Skin corrosion or irritation
Serious eye damage or eye irritation
SARA 313
: The following components are subject to reporting levels
established by SARA Title III, Section 313:
dimethyl
phthalate
131-11-3
Clean Air Act
This product neither contains, nor was manufactured with a Class I or Class II ODS as defined by
the U.S. Clean Air Act Section 602 (40 CFR 82, Subpt. A, App.A + B).
The following chemical(s) are listed as HAP under the U.S. Clean Air Act, Section 112 (40 CFR
61):
dimethyl phthalate 131-11-3
This product does not contain any chemicals listed under the U.S. Clean Air Act Section 112(r) for
Accidental Release Prevention (40 CFR 68.130, Subpart F).
The following chemical(s) are listed under the U.S. Clean Air Act Section 111 SOCMI Intermedi-
ate or Final VOC's (40 CFR 60.489):
Butanone 78-93-3
Clean Water Act
This product does not contain any Hazardous Substances listed under the U.S. CleanWater Act,
Section 311, Table 116.4A.
This product does not contain any Hazardous Chemicals listed under the U.S. CleanWater Act,
Section 311, Table 117.3.
This product contains the following toxic pollutants listed under the U.S. Clean Water Act Section
307
dimethyl phthalate 131-11-3
This product contains the following priority pollutants related to the U.S. Clean Water Act:
dimethyl phthalate 131-11-3
Maine Chemicals of High Concern
This product does not contain any chemicals that are listed as Maine Chemicals of
High Concern.
California Prop. 65
This product does not contain any chemicals known to the State of California to cause cancer,
birth, or any other reproductive defects.
International Regulations
Gefahrgruppe nach DGUV 13 Vorschrift 13 (bisher BGV B4): Ib (German regulatory requirements)
The ingredients of this product are reported in the following inventories:
TCSI (TW)
:
On the inventory, or in compliance with the inventory
TSCA (US)
:
All substances listed as active on the TSCA inventory
AICS (AU)
:
On the inventory, or in compliance with the inventory
DSL (CA)
:
All components of this product are on the Canadian DSL
ENCS (JP) : On the inventory, or in compliance with the inventory
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
25 / 26
ISHL (JP)
:
On the inventory, or in compliance with the inventory
KECI (KR)
:
On the inventory, or in compliance with the inventory
PICCS (PH)
:
On the inventory, or in compliance with the inventory
IECSC (CN)
:
On the inventory, or in compliance with the inventory
TSCA list
No substances are subject to a Significant New Use Rule.
No substances are subject to TSCA 12(b) export notification requirements.
SECTION 16. OTHER INFORMATION
Further information
This material safety datasheet only contains information relating to safety and does not replace
any product information or product specification.
These safety instructions also apply to empty packaging which may still contain product residues.
Sources of key data used to
compile the Material Safety
Data Sheet
: Internal technical data, data from raw material SDSs, OECD
eChem Portal search results and European Chemicals Agen-
cy, http://echa.europa.eu/
Revision Date : 06/21/2021
The information provided in this Safety Data Sheet is correct to the best of our knowledge, infor-
mation and belief at the date of its publication. The information given is designed only as a guid-
ance for safe handling, use, processing, storage, transportation, disposal and release and is not
to be considered a warranty or quality specification. The information relates only to the specific
material designated and may not be valid for such material used in combination with any other
materials or in any process, unless specified in the text.
US / Z8
Full text of other abbreviations
ACGIH : USA. ACGIH Threshold Limit Values (TLV)
ACGIH BEI : ACGIH - Biological Exposure Indices (BEI)
NIOSH REL : USA. NIOSH Recommended Exposure Limits
OSHA P0 : USA. OSHA - TABLE Z-1 Limits for Air Contaminants -
1910.1000
OSHA Z-1 : USA. Occupational Exposure Limits (OSHA) - Table Z-1 Lim-
its for Air Contaminants
ACGIH / TWA : 8-hour, time-weighted average
ACGIH / STEL : Short-term exposure limit
ACGIH / C : Ceiling limit
SAFETY DATA SHEET
NOROX
MEKP-900
Version
3.1
Revision Date:
06/21/2021
SDS Number:
600000000105
Date of last issue: 12/04/2019
Date of first issue: 10/04/2016
26 / 26
NIOSH REL / TWA : Time-weighted average concentration for up to a 10-hour
workday during a 40-hour workweek
NIOSH REL / ST : STEL - 15-minute TWA exposure that should not be exceeded
at any time during a workday
NIOSH REL / C : Ceiling value not be exceeded at any time.
OSHA P0 / TWA : 8-hour time weighted average
OSHA P0 / STEL : Short-term exposure limit
OSHA P0 / C : Ceiling limit
OSHA Z-1 / TWA : 8-hour time weighted average
AICS - Australian Inventory of Chemical Substances; AIIC - Australian Inventory of Industrial
Chemicals; ASTM - American Society for the Testing of Materials; bw - Body weight; CERCLA -
Comprehensive Environmental Response, Compensation, and Liability Act; CMR - Carcinogen,
Mutagen or Reproductive Toxicant; DIN - Standard of the German Institute for Standardisation;
DOT - Department of Transportation; DSL - Domestic Substances List (Canada); ECx - Concen-
tration associated with x% response; EHS - Extremely Hazardous Substance; ELx - Loading rate
associated with x% response; EmS - Emergency Schedule; ENCS - Existing and New Chemical
Substances (Japan); ErCx - Concentration associated with x% growth rate response; ERG -
Emergency Response Guide; GHS - Globally Harmonized System; GLP - Good Laboratory Prac-
tice; HMIS - Hazardous Materials Identification System; IARC - International Agency for Research
on Cancer; IATA - International Air Transport Association; IBC - International Code for the Con-
struction and Equipment of Ships carrying Dangerous Chemicals in Bulk; IC50 - Half maximal in-
hibitory concentration; ICAO - International Civil Aviation Organization; IECSC - Inventory of Ex-
isting Chemical Substances in China; IMDG - International Maritime Dangerous Goods; IMO - In-
ternational Maritime Organization; ISHL - Industrial Safety and Health Law (Japan); ISO - Interna-
tional Organisation for Standardization; KECI - Korea Existing Chemicals Inventory; LC50 - Lethal
Concentration to 50 % of a test population; LD50 - Lethal Dose to 50% of a test population (Me-
dian Lethal Dose); MARPOL - International Convention for the Prevention of Pollution from Ships;
MSHA - Mine Safety and Health Administration; n.o.s. - Not Otherwise Specified; NFPA - National
Fire Protection Association; NO(A)EC - No Observed (Adverse) Effect Concentration; NO(A)EL -
No Observed (Adverse) Effect Level; NOELR - No Observable Effect Loading Rate; NTP - Na-
tional Toxicology Program; NZIoC - New Zealand Inventory of Chemicals; OECD - Organization
for Economic Co-operation and Development; OPPTS - Office of Chemical Safety and Pollution
Prevention; PBT - Persistent, Bioaccumulative and Toxic substance; PICCS - Philippines Invento-
ry of Chemicals and Chemical Substances; (Q)SAR - (Quantitative) Structure Activity Relation-
ship; RCRA - Resource Conservation and Recovery Act; REACH - Regulation (EC) No
1907/2006 of the European Parliament and of the Council concerning the Registration, Evaluation,
Authorisation and Restriction of Chemicals; RQ - Reportable Quantity; SADT - Self-Accelerating
Decomposition Temperature; SARA - Superfund Amendments and Reauthorization Act; SDS -
Safety Data Sheet; TCSI - Taiwan Chemical Substance Inventory; TSCA - Toxic Substances
Control Act (United States); UN - United Nations; UNRTDG - United Nations Recommendations
on the Transport of Dangerous Goods; vPvB - Very Persistent and Very Bioaccumulative
The information provided in this Safety Data Sheet is correct to the best of our knowledge, infor-
mation and belief at the date of its publication. The information given is designed only as a guid-
ance for safe handling, use, processing, storage, transportation, disposal and release and is not
to be considered a warranty or quality specification. The information relates only to the specific
material designated and may not be valid for such material used in combination with any other
materials or in any process, unless specified in the text.
US / Z8
by | Sep 27, 2025
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
1 / 27
SECTION 1. IDENTIFICATION
Trade name
: NOROX
CHP
CAS-No.
: 80-15-9
Manufacturer or supplier’s details
Company name of supplier
: United Initiators, Inc.
Address
: 555 Garden Street
Elyria OH 44035 USA
Telephone
: +1-440-323-3112
Telefax
: +1-440-323-2659
Emergency telephone
: CHEMTREC US (24h): +1-800-424-9300
CHEMTREC WORLD (24h): +1-703-527-3887
E-mail address of person
responsible for the SDS
: cs-initiators.nafta@united-in.com
Recommended use of the chemical and restrictions on use
Recommended use
: polymerization initiators
SECTION 2. HAZARDS IDENTIFICATION
GHS classification in accordance with the OSHA Hazard Communication Standard (29 CFR
1910.1200)
Flammable liquids
: Category 4
Flammable liquids
: Category 4
Organic peroxides
: Type F
Acute toxicity (Oral)
: Category 4
Acute toxicity (Inhalation)
: Category 3
Acute toxicity (Dermal)
: Category 4
Skin corrosion
: Category 1B
Serious eye damage
: Category 1
Carcinogenicity
: Category 1B
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
2 / 27
Specific target organ toxicity
– single exposure
: Category 3 (Respiratory system)
Specific target organ toxicity
– repeated exposure
: Category 2
Aspiration hazard
: Category 1
Short-term (acute) aquatic
hazard
: Category 2
Long-term (chronic) aquatic
hazard
: Category 2
GHS label elements
Hazard pictograms
:
Signal Word
: Danger
Hazard Statements
: H227 Combustible liquid.
H242 Heating may cause a fire.
H302 + H312 Harmful if swallowed or in contact with skin.
H304 May be fatal if swallowed and enters airways.
H314 Causes severe skin burns and eye damage.
H331 Toxic if inhaled.
H335 May cause respiratory irritation.
H350 May cause cancer.
H373 May cause damage to organs through prolonged or
repeated exposure.
H411 Toxic to aquatic life with long lasting effects.
Precautionary Statements
:
Prevention:
P201 Obtain special instructions before use.
P202 Do not handle until all safety precautions have been read
and understood.
P210 Keep away from heat/ sparks/ open flames/ hot surfaces.
No smoking.
P220 Keep/Store away from clothing/ strong acids, bases,
heavy metal salts and other reducing substances /combustible
materials.
P234 Keep only in original container.
P260 Do not breathe mist or vapors.
P264 Wash skin thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P271 Use only outdoors or in a well-ventilated area.
P273 Avoid release to the environment.
P280 Wear protective gloves/ protective clothing/ eye protection/
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
3 / 27
face protection.
Response:
P301 + P310 IF SWALLOWED: Immediately call a POISON
CENTER/ doctor.
P301 + P330 + P331 IF SWALLOWED: Rinse mouth. Do NOT
induce vomiting.
P303 + P361 + P353 IF ON SKIN (or hair): Take off immediately
all contaminated clothing. Rinse skin with water/ shower.
P304 + P340 + P310 IF INHALED: Remove person to fresh air
and keep comfortable for breathing. Immediately call a POISON
CENTER/ doctor.
P305 + P351 + P338 + P310 IF IN EYES: Rinse cautiously with
water for several minutes. Remove contact lenses, if present
and easy to do. Continue rinsing. Immediately call a POISON
CENTER/ doctor.
P308 + P313 IF exposed or concerned: Get medical advice/
attention.
P363 Wash contaminated clothing before reuse.
P370 + P378 In case of fire: Use water spray, alcohol-resistant
foam, dry chemical or carbon dioxide to extinguish.
P391 Collect spillage.
Storage:
P403 + P233 Store in a well-ventilated place. Keep container
tightly closed.
P405 Store locked up.
P410 Protect from sunlight.
P411 + P235 Store at temperatures not exceeding < 30 C/ <
86 F. Keep cool.
P420 Store away from other materials.
Disposal:
P501 Dispose of contents/ container to an approved waste dis-
posal plant.
Other hazards
None known.
SECTION 3. COMPOSITION/INFORMATION ON INGREDIENTS
Substance / Mixture
: Substance
Chemical nature
: Organic Peroxide
Substance name
: Cumene hydroperoxide
CAS-No.
: 80-15-9
Components
Chemical name CAS-No. Concentration (% w/w)
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
4 / 27
Cumene hydroperoxide 80-15-9
>= 80 – < 85
Cumene 98-82-8
>= 10 – < 15
Benzenemethanol, alpha,alpha-
dimethyl-
617-94-7
>= 1 – < 5
acetophenone 98-86-2
>= 1 – < 5
Actual concentration is withheld as a trade secret
SECTION 4. FIRST AID MEASURES
General advice
: Take off contaminated clothing and shoes immediately.
Call a physician immediately.
Never give anything by mouth to an unconscious person.
If unconscious, place in recovery position and seek medical
advice.
Move out of dangerous area.
Show this material safety data sheet to the doctor in
attendance.
Do not leave the victim unattended.
Symptoms of poisoning may appear several hours later.
No artificial respiration, mouth-to-mouth or mouth to nose. Use
suitable instruments/apparatus.
If inhaled
: Administer oxygen if breathing is difficult or cyanosis is
observed.
Call a physician immediately.
If breathed in, move person into fresh air.
If not breathing, give artificial respiration.
Contact a poison control center.
Respiratory tract burning possible if aerosols are inhaled.
Call a physician or poison control center immediately.
If unconscious, place in recovery position and seek medical
advice.
Keep respiratory tract clear.
In case of skin contact
: If symptoms persist, call a physician.
Immediate medical treatment is necessary as untreated
wounds from corrosion of the skin heal slowly and with
difficulty.
In case of contact, immediately flush skin with plenty of water
for at least 15 minutes while removing contaminated clothing
and shoes.
Wash contaminated clothing before re-use.
If on skin, rinse well with water.
If on clothes, remove clothes.
In case of eye contact
: Small amounts splashed into eyes can cause irreversible
tissue damage and blindness.
In the case of contact with eyes, rinse immediately with plenty
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
5 / 27
of water and seek medical advice.
Continue rinsing eyes during transport to hospital.
Remove contact lenses.
Protect unharmed eye.
Keep eye wide open while rinsing.
If eye irritation persists, consult a specialist.
If swallowed
: Call a physician immediately.
Contact a poison control center.
Rinse mouth thoroughly with water.
Keep respiratory tract clear.
If symptoms persist, call a physician.
Most important symptoms
and effects, both acute and
delayed
: Harmful if swallowed or in contact with skin.
May be fatal if swallowed and enters airways.
Causes serious eye damage.
Toxic if inhaled.
May cause respiratory irritation.
May cause cancer.
May cause damage to organs through prolonged or repeated
exposure.
Causes severe burns.
Protection of first-aiders
: First Aid responders should pay attention to self-protection
and use the recommended protective clothing
Notes to physician
: Treat symptomatically and supportively.
SECTION 5. FIRE-FIGHTING MEASURES
Suitable extinguishing media
: Water spray jet
Alcohol-resistant foam
Carbon dioxide (CO2)
Dry chemical
Unsuitable extinguishing
media
: High volume water jet
Specific hazards during fire
fighting
: Risk of explosion if heated under confinement.
Possible emission of gaseous decomposition products may
lead to a dangerous pressure build-up.
Avoid confinement.
Contact with incompatible materials or exposure to
temperatures exceeding SADT may result in a self-
accelerating decomposition reaction with release of flammable
vapors which may auto-ignite.
The product burns violently.
Flash back possible over considerable distance.
Do not allow run-off from fire fighting to enter drains or water
courses.
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
6 / 27
Vapors may form explosive mixtures with air.
The product will float on water and can be reignited on surface
water.
Cool closed containers exposed to fire with water spray.
Specific extinguishing meth-
ods
: Do not use a solid water stream as it may scatter and spread
fire.
Remove undamaged containers from fire area if it is safe to do
so.
Use water spray to cool unopened containers.
Further information : Use extinguishing measures that are appropriate to local
circumstances and the surrounding environment.
Use a water spray to cool fully closed containers.
Collect contaminated fire extinguishing water separately. This
must not be discharged into drains.
Fire residues and contaminated fire extinguishing water must
be disposed of in accordance with local regulations.
Special protective equipment
for fire-fighters
: Wear self-contained breathing apparatus for firefighting if
necessary.
Use personal protective equipment.
SECTION 6. ACCIDENTAL RELEASE MEASURES
Personal precautions, protec-
tive equipment and emer-
gency procedures
: Follow safe handling advice and personal protective
equipment recommendations.
Beware of vapors accumulating to form explosive
concentrations. Vapors can accumulate in low areas.
Use personal protective equipment.
Ensure adequate ventilation.
Remove all sources of ignition.
Evacuate personnel to safe areas.
Never return spills in original containers for re-use.
Treat recovered material as described in the section "Disposal
considerations".
Environmental precautions
: Prevent product from entering drains.
Prevent further leakage or spillage if safe to do so.
If the product contaminates rivers and lakes or drains inform
respective authorities.
Methods and materials for
containment and cleaning up
: Contact with incompatible substances can cause
decomposition at or below SADT.
Clear spills immediately.
Suppress (knock down) gases/vapors/mists with a water spray
jet.
To clean the floor and all objects contaminated by this
material, use plenty of water.
Soak up with inert absorbent material.
Isolate waste and do not reuse.
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
7 / 27
Non-sparking tools should be used.
Local or national regulations may apply to releases and
disposal of this material, as well as those materials and items
employed in the cleanup of releases. You will need to
determine which regulations are applicable.
SECTION 7. HANDLING AND STORAGE
Technical measures
: See Engineering measures under EXPOSURE
CONTROLS/PERSONAL PROTECTION section.
Advice on protection against
fire and explosion
: Take necessary action to avoid static electricity discharge
(which might cause ignition of organic vapors).
Keep away from heat and sources of ignition.
Use only explosion-proof equipment.
Keep away from open flames, hot surfaces and sources of
ignition.
Keep away from combustible material.
Do not spray on a naked flame or any incandescent material.
Advice on safe handling
: Open drum carefully as content may be under pressure.
Protect from contamination.
Do not swallow.
Do not breathe vapors/dust.
Avoid exposure - obtain special instructions before use.
Avoid contact with skin and eyes.
Avoid formation of aerosol.
Take precautionary measures against static discharges.
Never return any product to the container from which it was
originally removed.
Provide sufficient air exchange and/or exhaust in work rooms.
Avoid confinement.
Keep away from heat, hot surfaces, sparks, open flames and
other ignition sources. No smoking.
Smoking, eating and drinking should be prohibited in the
application area.
Wash thoroughly after handling.
For personal protection see section 8.
Conditions for safe storage
: Store in original container.
Keep containers tightly closed in a cool, well-ventilated place.
Store in cool place.
Contamination may result in dangerous pressure increases -
closed containers may rupture.
Prevent unauthorized access.
Observe label precautions.
Store in accordance with the particular national regulations.
Avoid impurities (e.g. rust, dust, ash), risk of decomposition.
Electrical installations / working materials must comply with
the technological safety standards.
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
8 / 27
Containers which are opened must be carefully resealed and
kept upright to prevent leakage.
Materials to avoid
: Keep away from strong acids, bases, heavy metal salts and
other reducing substances.
Recommended storage tem-
perature
: < 30 C
< 86 F
Further information on stor-
age stability
: No decomposition if stored normally.
SECTION 8. EXPOSURE CONTROLS/PERSONAL PROTECTION
Ingredients with workplace control parameters
Components CAS-No. Value type
(Form of
exposure)
Control parame-
ters / Permissible
concentration
Basis
Cumene hydroperoxide 80-15-9 TWA 1 ppm US WEEL
Cumene 98-82-8 TWA 5 ppm ACGIH
TWA 50 ppm
245 mg/m3
NIOSH REL
TWA 50 ppm
245 mg/m3
OSHA Z-1
TWA 50 ppm
245 mg/m3
OSHA P0
acetophenone 98-86-2 TWA 10 ppm ACGIH
TWA 10 ppm US WEEL
Engineering measures : Minimize workplace exposure concentrations.
Personal protective equipment
Respiratory protection
: In the case of dust or aerosol formation use respirator with an
approved filter.
Filter type
: ABEK-filter
Use NIOSH approved respiratory protection.
Hand protection
Material : Nitrile rubber
Break through time : < 30 min
Glove thickness : 0.40 mm
Material : butyl-rubber
Break through time : < 30 min
Glove thickness : 0.70 mm
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
9 / 27
Remarks
: The data about break through time/strength of material are
standard values! The exact break through time/strength of
material has to be obtained from the producer of the
protective glove. Choose gloves to protect hands against
chemicals depending on the concentration and quantity of the
hazardous substance and specific to place of work.
For special applications, we recommend clarifying the
resistance to chemicals of the aforementioned protective
gloves with the glove manufacturer. Wash hands before
breaks and at the end of workday.
Eye protection
: Ensure that eyewash stations and safety showers are close
to the workstation location.
Please follow all applicable local/national requirements when
selecting protective measures for a specific workplace.
Always wear eye protection when the potential for inadvertent
eye contact with the product cannot be excluded.
Tightly fitting safety goggles
Please wear suitable protective goggles. Also wear face
protection if there is a splash hazard.
Skin and body protection
: Select appropriate protective clothing based on chemical
resistance data and an assessment of the local exposure
potential.
Additional body garments should be used based upon the
task being performed (e.g., sleevelets, apron, gauntlets,
disposable suits) to avoid exposed skin surfaces.
Wear as appropriate:
Flame retardant antistatic protective clothing.
Protective measures
: The type of protective equipment must be selected according
to the concentration and amount of the dangerous substance
at the specific workplace.
Hygiene measures
: Avoid contact with skin, eyes and clothing.
Keep away from food and drink.
When using do not eat or drink.
When using do not smoke.
Wash hands before breaks and immediately after handling
the product.
SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES
Appearance
: liquid
Color
: Colorless to pale yellow
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
10 / 27
Odor
: aromatic
Odor Threshold
: No data available
pH
: 5 - 6
Melting point/range
: -9 C
Boiling point/boiling range
: 53 C
(0.13 hPa)
Flash point
: ca. 63 C
Method: closed cup
Flammability (solid, gas)
: Not applicable
Flammability (liquids)
: Flammable liquid
Self-ignition : The substance or mixture is not classified as pyrophoric.
Upper explosion limit / Upper
flammability limit
: Upper explosion limit
No data available
Lower explosion limit / Lower
flammability limit
: Lower explosion limit
No data available
Vapor pressure
: 0.044 hPa (25 C)
Relative vapor density
: ca. 5.4 (20 C)
Relative density
: not determined
Density
: 1.06 g/cm3 (20 C)
Solubility(ies)
Water solubility
: 13.9 g/l slightly soluble (25 C)
Solubility in other solvents
: No data available
Partition coefficient: n-
octanol/water
: No data available
Autoignition temperature
: not determined
Self-Accelerating decomposi-
tion temperature (SADT)
: 80 C
Method: UN-Test H.4
SADT-Self Accelerating Decomposition Temperature. Lowest
temperature at which the tested package size will undergo a
self-accelerating decomposition reaction.
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
11 / 27
Viscosity
Viscosity, dynamic
: ca. 12.5 mPa.s (20 C)
Viscosity, kinematic
: not determined
Explosive properties
: Not explosive In use, may form flammable/explosive vapor-air
mixture.
Oxidizing properties
: The substance or mixture is not classified as oxidizing.
Organic peroxide
Self-heating substances
: The substance or mixture is not classified as self heating.
SECTION 10. STABILITY AND REACTIVITY
Reactivity
: Stable under recommended storage conditions.
Heating may cause a fire or explosion.
Chemical stability
: Stable under recommended storage conditions.
No decomposition if stored normally.
Possibility of hazardous reac-
tions
: Vapors may form explosive mixture with air.
Conditions to avoid
: Protect from contamination.
Contact with incompatible substances can cause
decomposition at or below SADT.
Heat, flames and sparks.
Avoid confinement.
Incompatible materials
: Accelerators, strong acids and bases, heavy metals and
heavy metal salts, reducing agents
Hazardous decomposition
products
: Irritant, caustic, flammable, noxious/toxic gases and vapours
can develop in the case of fire and decomposition
SECTION 11. TOXICOLOGICAL INFORMATION
Acute toxicity
Harmful if swallowed or in contact with skin.
Toxic if inhaled.
Product:
Acute oral toxicity
: LD50 (Rat): 382 mg/kg
Acute inhalation toxicity
: LC50: 1.370 mg/l
Exposure time: 4 h
Test atmosphere: dust/mist
Assessment: The component/mixture is toxic after short term
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
12 / 27
inhalation.
Acute dermal toxicity
: LD50: 1,200 - 1,520 mg/kg
Assessment: The component/mixture is moderately toxic after
single contact with skin.
Components:
Cumene hydroperoxide:
Acute oral toxicity
: LD50 Oral (Rat): 382 mg/kg
Acute inhalation toxicity
: LC50: 1.370 mg/l
Exposure time: 4 h
Test atmosphere: dust/mist
Assessment: The component/mixture is toxic after short term
inhalation.
Acute dermal toxicity
: LD50: 1,200 - 1,520 mg/kg
Assessment: The component/mixture is moderately toxic after
single contact with skin.
Cumene:
Acute oral toxicity
: LD50 (Rat): 2,260 mg/kg
Method: OECD Test Guideline 401
Acute dermal toxicity
: LD50 (Rabbit): > 3,160 mg/kg
Assessment: The substance or mixture has no acute dermal
toxicity
Remarks: No mortality observed at this dose.
Benzenemethanol, alpha,alpha-dimethyl-:
Acute oral toxicity
: Acute toxicity estimate: 500 mg/kg
Assessment: The component/mixture is moderately toxic after
single ingestion.
Remarks: Expert judgment
Acute inhalation toxicity
: Remarks: No data available
Acute dermal toxicity
: LD50: Method: Expert judgment
Assessment: The substance or mixture has no acute dermal
toxicity
Remarks: Based on available data, the classification criteria
are not met.
acetophenone:
Acute oral toxicity
: Acute toxicity estimate: 500.0 mg/kg
Method: Expert judgment
Assessment: The component/mixture is moderately toxic after
single ingestion.
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
13 / 27
Remarks: Based on harmonised classification in EU regulation
1272/2008, Annex VI
Acute dermal toxicity
: LD50 (Rat): 3,300 mg/kg
Method: OECD Test Guideline 402
Skin corrosion/irritation
Causes severe burns.
Product:
Species : Rabbit
Result : Causes burns.
Remarks : Extremely corrosive and destructive to tissue.
Components:
Cumene hydroperoxide:
Species : Rabbit
Result : Causes burns.
Remarks : Extremely corrosive and destructive to tissue.
Cumene:
Species : Rabbit
Method : OECD Test Guideline 404
Result : No skin irritation
Benzenemethanol, alpha,alpha-dimethyl-:
Species : Rabbit
Result : Severe skin irritation
acetophenone:
Species : Rabbit
Method : OECD Test Guideline 404
Result : No skin irritation
Remarks : May cause skin irritation in susceptible persons.
Serious eye damage/eye irritation
Causes serious eye damage.
Product:
Species : Rabbit
Result : Corrosive
Remarks : May cause irreversible eye damage.
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
14 / 27
Components:
Cumene hydroperoxide:
Species : Rabbit
Result : Corrosive
Remarks : May cause irreversible eye damage.
Cumene:
Species : Rabbit
Result : No eye irritation
Method : OECD Test Guideline 405
Benzenemethanol, alpha,alpha-dimethyl-:
Result : Irritating to eyes.
acetophenone:
Species : Rabbit
Result : Eye irritation
Method : No information available.
Remarks : Based on harmonised classification in EU regulation
1272/2008, Annex VI
Remarks : May cause irreversible eye damage.
Respiratory or skin sensitization
Skin sensitization
Not classified based on available information.
Respiratory sensitization
Not classified based on available information.
Product:
Result : Does not cause skin sensitization.
Remarks : Based on available data, the classification criteria are not met.
Components:
Cumene hydroperoxide:
Result : Does not cause skin sensitization.
Cumene:
Routes of exposure : Skin contact
Species : Guinea pig
Method : OECD Test Guideline 406
Result : Does not cause skin sensitization.
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
15 / 27
acetophenone:
Test Type : Draize Test
Routes of exposure : Skin contact
Species : Guinea pig
Result : Does not cause skin sensitization.
Germ cell mutagenicity
Not classified based on available information.
Product:
Genotoxicity in vitro
: Test Type: in vitro test
Test system: Salmonella typhimurium
Result: positive
Genotoxicity in vivo
: Test Type: Micronucleus test
Species: Mouse
Application Route: Skin contact
Result: negative
Components:
Cumene hydroperoxide:
Genotoxicity in vitro
: Test Type: in vitro test
Test system: Salmonella typhimurium
Result: positive
Genotoxicity in vivo
: Test Type: Micronucleus test
Species: Mouse
Application Route: Skin contact
Result: negative
Cumene:
Genotoxicity in vitro
: Method: OECD Test Guideline 473
Result: negative
Method: OECD Test Guideline 471
Result: negative
Method: OECD Test Guideline 476
Result: negative
Method: OECD Test Guideline 482
Result: negative
Test Type: Ames test
Result: positive
Genotoxicity in vivo
: Species: Rat
Application Route: Intraperitoneal
Exposure time: 72 h
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
16 / 27
Method: OECD Test Guideline 474
Result: Equivocal
Species: Mouse
Application Route: inhalation (gas)
Exposure time: 14 w
Method: OECD Test Guideline 474
Result: negative
acetophenone:
Genotoxicity in vitro
: Method: OECD Test Guideline 473
Result: negative
Method: OECD Test Guideline 476
Result: negative
Method: OECD Test Guideline 471
Result: negative
Genotoxicity in vivo
: Species: Mouse
Application Route: Intraperitoneal
Method: OECD Test Guideline 474
Result: negative
Carcinogenicity
May cause cancer.
Product:
Remarks : This information is not available.
Components:
Cumene hydroperoxide:
Remarks : This information is not available.
Cumene:
Species : Rat, male and female
Application Route : inhalation (vapor)
Result : carcinogenic effects
Species : Mouse, male and female
Application Route : inhalation (vapor)
Result : carcinogenic effects
Carcinogenicity – Assess-
ment
: Sufficient evidence of carcinogenicity in animal experiments
IARC Group 2B: Possibly carcinogenic to humans
Cumene 98-82-8
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
17 / 27
OSHA No component of this product present at levels greater than or equal to 0.1% is
on OSHA s list of regulated carcinogens.
NTP Reasonably anticipated to be a human carcinogen
Cumene 98-82-8
Reproductive toxicity
Not classified based on available information.
Components:
Cumene hydroperoxide:
Effects on fertility
: Remarks: No data available
Effects on fetal development
: Remarks: No data available
Cumene:
Effects on fetal development
: Species: Rabbit
Application Route: inhalation (vapor)
General Toxicity Maternal: LOAEL: 500
Developmental Toxicity: NOAEL: 2,300
Method: OECD Test Guideline 414
acetophenone:
Effects on fertility
: Species: Rat
Application Route: Ingestion
General Toxicity Parent: NOAEL: 225 mg/kg body weight
General Toxicity F1: NOAEL: 225 mg/kg body weight
Method: OECD Test Guideline 422
Result: negative
Species: Rat
Application Route: Ingestion
General Toxicity Parent: LOAEL: 750 mg/kg body weight
General Toxicity F1: LOAEL: 750 mg/kg body weight
Method: OECD Test Guideline 422
Effects on fetal development
: Species: Mouse
Application Route: Ingestion
General Toxicity Maternal: NOAEL: 125 mg/kg body weight
Embryo-fetal toxicity.: NOAEL: 125 mg/kg body weight
Method: OECD Test Guideline 414
STOT-single exposure
May cause respiratory irritation.
Product:
Assessment : May cause respiratory irritation.
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
18 / 27
Components:
Cumene:
Assessment : May cause respiratory irritation.
STOT-repeated exposure
May cause damage to organs through prolonged or repeated exposure.
Product:
Assessment : May cause damage to organs through prolonged or repeated
exposure.
Components:
Cumene hydroperoxide:
Assessment : May cause damage to organs through prolonged or repeated
exposure.
Repeated dose toxicity
Product:
Species : Rat
NOAEC : 31 mg/m
Application Route : inhalation (gas)
Exposure time : 90 d
Method : OECD Test Guideline 413
Components:
Cumene hydroperoxide:
Species : Rat
NOAEC : 31 mg/m
Application Route : inhalation (gas)
Exposure time : 90 d
Cumene:
Species : Rat
NOAEL : 154 mg/kg
Application Route : Oral
Method : OECD Test Guideline 413
acetophenone:
Species : Rat
NOAEL : 225 mg/kg
LOAEL : 750 mg/kg
Application Route : Ingestion
Method : OECD Test Guideline 422
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
19 / 27
Aspiration toxicity
May be fatal if swallowed and enters airways.
Product:
May be fatal if swallowed and enters airways.
Components:
Cumene:
May be fatal if swallowed and enters airways.
Further information
Product:
Remarks : Solvents may degrease the skin.
Components:
acetophenone:
Remarks : No data available
SECTION 12. ECOLOGICAL INFORMATION
Ecotoxicity
Product:
Toxicity to fish
: LC50 (Oncorhynchus mykiss (rainbow trout)): 3.9 mg/l
Exposure time: 96 h
Test Type: semi-static test
Method: OECD Test Guideline 203
Toxicity to daphnia and other
aquatic invertebrates
: EC50 (Daphnia magna (Water flea)): 18.8 mg/l
Exposure time: 48 h
Test Type: Immobilization
Method: OECD Test Guideline 202
Toxicity to algae/aquatic
plants
: EC50 (Desmodesmus subspicatus (green algae)): 3.1 mg/l
Exposure time: 72 h
Method: OECD Test Guideline 201
NOEC (Desmodesmus subspicatus (green algae)): 1 mg/l
Exposure time: 72 h
Method: OECD Test Guideline 201
Toxicity to microorganisms
: NOEC (Pseudomonas putida): 50 mg/l
End point: Growth rate
Exposure time: 16 h
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
20 / 27
Ecotoxicology Assessment
Acute aquatic toxicity
: Toxic to aquatic life.
Chronic aquatic toxicity
: Toxic to aquatic life with long lasting effects.
Components:
Cumene hydroperoxide:
Toxicity to fish
: LC50 (Oncorhynchus mykiss (rainbow trout)): 3.9 mg/l
Exposure time: 96 h
Test Type: semi-static test
Method: OECD Test Guideline 203
Toxicity to daphnia and other
aquatic invertebrates
: EC50 (Daphnia magna (Water flea)): 18.8 mg/l
Exposure time: 48 h
Test Type: Immobilization
Method: OECD Test Guideline 202
Toxicity to algae/aquatic
plants
: EC50 (Desmodesmus subspicatus (green algae)): 3.1 mg/l
Exposure time: 72 h
Method: OECD Test Guideline 201
NOEC (Desmodesmus subspicatus (green algae)): 1 mg/l
Exposure time: 72 h
Method: OECD Test Guideline 201
Toxicity to microorganisms
: NOEC (Pseudomonas putida): 50 mg/l
End point: Growth rate
Exposure time: 16 h
Cumene:
Toxicity to fish
: LC50 (Oncorhynchus mykiss (rainbow trout)): 4.8 mg/l
Exposure time: 96 h
Toxicity to daphnia and other
aquatic invertebrates
: EC50 (Daphnia magna (Water flea)): 2.14 mg/l
Exposure time: 48 h
Method: OECD Test Guideline 202
Toxicity to algae/aquatic
plants
: EC50 (Desmodesmus subspicatus (green algae)): 2.01 mg/l
Exposure time: 72 h
Method: OECD Test Guideline 201
Toxicity to daphnia and other
aquatic invertebrates (Chron-
ic toxicity)
: NOEC (Daphnia magna (Water flea)): 0.35 mg/l
Exposure time: 21 d
Method: OECD Test Guideline 211
Toxicity to microorganisms
: EC50: > 2,000 mg/l
Exposure time: 3 h
Method: OECD Test Guideline 209
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
21 / 27
Ecotoxicology Assessment
Chronic aquatic toxicity
: Toxic to aquatic life with long lasting effects.
Benzenemethanol, alpha,alpha-dimethyl-:
Ecotoxicology Assessment
Acute aquatic toxicity
: This product has no known ecotoxicological effects.
Chronic aquatic toxicity
: This product has no known ecotoxicological effects.
acetophenone:
Toxicity to fish
: LC50 (Pimephales promelas (fathead minnow)): 162 mg/l
Exposure time: 96 h
Method: OECD Test Guideline 203
Toxicity to daphnia and other
aquatic invertebrates
: EC50 (Daphnia magna (Water flea)): 528 mg/l
Exposure time: 48 h
Toxicity to algae/aquatic
plants
: EC50 (Pseudokirchneriella subcapitata (green algae)): 86.4
mg/l
Exposure time: 72 h
Method: OECD Test Guideline 201
NOEC (Pseudokirchneriella subcapitata (green algae)): 24.8
mg/l
Exposure time: 72 h
Method: OECD Test Guideline 201
Persistence and degradability
Product:
Biodegradability
: Result: Not readily biodegradable.
Method: OECD Test Guideline 301B
Components:
Cumene hydroperoxide:
Biodegradability
: Result: Not readily biodegradable.
Method: OECD Test Guideline 301B
Cumene:
Biodegradability
: Result: Readily biodegradable.
Benzenemethanol, alpha,alpha-dimethyl-:
Biodegradability
: Remarks: No data available
acetophenone:
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
22 / 27
Biodegradability
: Result: Readily biodegradable.
Method: OECD Test Guideline 301C
Bioaccumulative potential
Components:
Cumene hydroperoxide:
Partition coefficient: n-
octanol/water
: log Pow: 1.6
Cumene:
Bioaccumulation
: Bioconcentration factor (BCF): 94.69
Remarks: Calculation
Partition coefficient: n-
octanol/water
: log Pow: 3.55 (23 C / 23 C)
Benzenemethanol, alpha,alpha-dimethyl-:
Partition coefficient: n-
octanol/water
: Remarks: No data available
acetophenone:
Bioaccumulation
: Bioconcentration factor (BCF): 0.48
Partition coefficient: n-
octanol/water
: log Pow: 1.63
Mobility in soil
No data available
Other adverse effects
Product:
Ozone-Depletion Potential
: Regulation: 40 CFR Protection of Environment; Part 82 Pro-
tection of Stratospheric Ozone – CAA Section 602 Class I
Substances
Remarks: This product neither contains, nor was manufac-
tured with a Class I or Class II ODS as defined by the U.S.
Clean Air Act Section 602 (40 CFR 82, Subpt. A, App.A + B).
Additional ecological infor-
mation
: An environmental hazard cannot be excluded in the event of
unprofessional handling or disposal.
Toxic to aquatic life with long lasting effects.
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
23 / 27
SECTION 13. DISPOSAL CONSIDERATIONS
Disposal methods
Waste from residues : Dispose of wastes in an approved waste disposal facility.
The product should not be allowed to enter drains, water
courses or the soil.
Do not contaminate ponds, waterways or ditches with
chemical or used container.
Contaminated packaging
: Dispose of in accordance with local regulations.
Clean container with water.
Dispose of contents/ container to an approved waste disposal
plant.
Empty remaining contents.
Dispose of as unused product.
Do not re-use empty containers.
Do not burn, or use a cutting torch on, the empty drum.
SECTION 14. TRANSPORT INFORMATION
International Regulations
UNRTDG
UN number : UN 3109
Proper shipping name : ORGANIC PEROXIDE TYPE F, LIQUID
(CUMYL HYDROPEROXIDE )
Class : 5.2
Subsidiary risk : 8
Packing group : Not assigned by regulation
Labels : 5.2 (8)
IATA-DGR
UN/ID No. : UN 3109
Proper shipping name : Organic peroxide type F, liquid
(Cumyl hydroperoxide)
Class : 5.2
Subsidiary risk : 8
Packing group : Not assigned by regulation
Labels : Organic Peroxides, Keep Away From Heat, Corrosive
Packing instruction (cargo
aircraft)
: 570
Packing instruction (passen-
ger aircraft)
: 570
IMDG-Code
UN number : UN 3109
Proper shipping name : ORGANIC PEROXIDE TYPE F, LIQUID
(CUMYL HYDROPEROXIDE )
Class : 5.2
Subsidiary risk : 8
Packing group : Not assigned by regulation
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
24 / 27
Labels : 5.2 (8)
EmS Code : F-J, S-R
Marine pollutant : yes
Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code
Not applicable for product as supplied.
Domestic regulation
49 CFR
UN/ID/NA number : UN 3109
Proper shipping name : Organic peroxide type F, liquid
(Cumyl hydroperoxide,<= 90%)
Class : 5.2
Subsidiary risk : 8
Packing group : Not assigned by regulation
Labels : ORGANIC PEROXIDE , CORROSIVE
ERG Code : 145
Marine pollutant : yes
Special precautions for user
The transport classification(s) provided herein are for informational purposes only, and solely
based upon the properties of the unpackaged material as it is described within this Safety Data
Sheet. Transportation classifications may vary by mode of transportation, package sizes, and
variations in regional or country regulations.
SECTION 15. REGULATORY INFORMATION
CERCLA Reportable Quantity
Components CAS-No. Component RQ
(lbs)
Calculated product RQ
(lbs)
Cumene hydroperoxide 80-15-9 10 12
SARA 304 Extremely Hazardous Substances Reportable Quantity
This material does not contain any components with a section 304 EHS RQ.
SARA 302 Extremely Hazardous Substances Threshold Planning Quantity
This material does not contain any components with a section 302 EHS TPQ.
SARA 311/312 Hazards
: Flammable (gases, aerosols, liquids, or solids)
Organic peroxides
Acute toxicity (any route of exposure)
Carcinogenicity
Specific target organ toxicity (single or repeated exposure)
Aspiration hazard
Skin corrosion or irritation
Serious eye damage or eye irritation
SARA 313
: The following components are subject to reporting levels
established by SARA Title III, Section 313:
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
25 / 27
Cumene hydrop-
eroxide
80-15-9
Cumene
98-82-8
acetophenone
98-86-2
Clean Air Act
This product neither contains, nor was manufactured with a Class I or Class II ODS as defined by
the U.S. Clean Air Act Section 602 (40 CFR 82, Subpt. A, App.A + B).
The following chemical(s) are listed as HAP under the U.S. Clean Air Act, Section 112 (40 CFR
61):
Cumene 98-82-8
acetophenone 98-86-2
This product does not contain any chemicals listed under the U.S. Clean Air Act Section 112(r) for
Accidental Release Prevention (40 CFR 68.130, Subpart F).
The following chemical(s) are listed under the U.S. Clean Air Act Section 111 SOCMI Intermedi-
ate or Final VOC's (40 CFR 60.489):
Cumene hydroperoxide 80-15-9
Cumene 98-82-8
acetophenone 98-86-2
Clean Water Act
This product does not contain any Hazardous Substances listed under the U.S. CleanWater Act,
Section 311, Table 116.4A.
This product does not contain any Hazardous Chemicals listed under the U.S. CleanWater Act,
Section 311, Table 117.3.
This product does not contain any toxic pollutants listed under the U.S. Clean Water Act Section
307
This product does not contain any priority pollutants related to the U.S. Clean Water Act
California Prop. 65
WARNING: This product can expose you to chemicals including Cumene, which is/are known to
the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
International Regulations
Gefahrgruppe nach DGUV 13 Vorschrift 13 (bisher BGV B4): Ib (German regulatory requirements)
The ingredients of this product are reported in the following inventories:
TCSI (TW)
:
On the inventory, or in compliance with the inventory
TSCA (US)
:
All substances listed as active on the TSCA inventory
AIIC (AU)
:
On the inventory, or in compliance with the inventory
DSL (CA)
:
All components of this product are on the Canadian DSL
ENCS (JP)
:
On the inventory, or in compliance with the inventory
ISHL (JP)
:
On the inventory, or in compliance with the inventory
KECI (KR) : On the inventory, or in compliance with the inventory
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
26 / 27
PICCS (PH)
:
On the inventory, or in compliance with the inventory
IECSC (CN)
:
On the inventory, or in compliance with the inventory
NZIoC (NZ)
:
On the inventory, or in compliance with the inventory
TECI (TH)
:
On the inventory, or in compliance with the inventory
TSCA list
No substances are subject to a Significant New Use Rule.
No substances are subject to TSCA 12(b) export notification requirements.
SECTION 16. OTHER INFORMATION
Further information
This material safety datasheet only contains information relating to safety and does not replace
any product information or product specification.
These safety instructions also apply to empty packaging which may still contain product residues.
The hazards on the label also apply to residues in the container.
Sources of key data used to
compile the Material Safety
Data Sheet
: Internal technical data, data from raw material SDSs, OECD
eChem Portal search results and European Chemicals Agen-
cy, http://echa.europa.eu/
Revision Date : 08/07/2023
Full text of other abbreviations
ACGIH : USA. ACGIH Threshold Limit Values (TLV)
NIOSH REL : USA. NIOSH Recommended Exposure Limits
OSHA P0 : USA. Table Z-1-A Limits for Air Contaminants (1989 vacated
values)
OSHA Z-1 : USA. Occupational Exposure Limits (OSHA) - Table Z-1 Lim-
its for Air Contaminants
US WEEL : USA. Workplace Environmental Exposure Levels (WEEL)
ACGIH / TWA : 8-hour, time-weighted average
NIOSH REL / TWA : Time-weighted average concentration for up to a 10-hour
workday during a 40-hour workweek
OSHA P0 / TWA : 8-hour time weighted average
OSHA Z-1 / TWA : 8-hour time weighted average
US WEEL / TWA : 8-hr TWA
AIIC - Australian Inventory of Industrial Chemicals; ASTM - American Society for the Testing of
Materials; bw - Body weight; CERCLA - Comprehensive Environmental Response, Compensation,
and Liability Act; CMR - Carcinogen, Mutagen or Reproductive Toxicant; DIN - Standard of the
SAFETY DATA SHEET
NOROX
CHP
Version
3.0
Revision Date:
08/07/2023
SDS Number:
600000000292
Date of last issue: 04/09/2021
Date of first issue: 12/19/2016
27 / 27
German Institute for Standardisation; DOT - Department of Transportation; DSL - Domestic Sub-
stances List (Canada); ECx - Concentration associated with x% response; EHS - Extremely Haz-
ardous Substance; ELx - Loading rate associated with x% response; EmS - Emergency Schedule;
ENCS - Existing and New Chemical Substances (Japan); ErCx - Concentration associated with
x% growth rate response; ERG - Emergency Response Guide; GHS - Globally Harmonized Sys-
tem; GLP - Good Laboratory Practice; HMIS - Hazardous Materials Identification System; IARC -
International Agency for Research on Cancer; IATA - International Air Transport Association; IBC
- International Code for the Construction and Equipment of Ships carrying Dangerous Chemicals
in Bulk; IC50 - Half maximal inhibitory concentration; ICAO - International Civil Aviation Organiza-
tion; IECSC - Inventory of Existing Chemical Substances in China; IMDG - International Maritime
Dangerous Goods; IMO - International Maritime Organization; ISHL - Industrial Safety and Health
Law (Japan); ISO - International Organisation for Standardization; KECI - Korea Existing Chemi-
cals Inventory; LC50 - Lethal Concentration to 50 % of a test population; LD50 - Lethal Dose to
50% of a test population (Median Lethal Dose); MARPOL - International Convention for the Pre-
vention of Pollution from Ships; MSHA - Mine Safety and Health Administration; n.o.s. - Not Oth-
erwise Specified; NFPA - National Fire Protection Association; NO(A)EC - No Observed (Adverse)
Effect Concentration; NO(A)EL - No Observed (Adverse) Effect Level; NOELR - No Observable
Effect Loading Rate; NTP - National Toxicology Program; NZIoC - New Zealand Inventory of
Chemicals; OECD - Organization for Economic Co-operation and Development; OPPTS - Office
of Chemical Safety and Pollution Prevention; PBT - Persistent, Bioaccumulative and Toxic sub-
stance; PICCS - Philippines Inventory of Chemicals and Chemical Substances; (Q)SAR - (Quanti-
tative) Structure Activity Relationship; RCRA - Resource Conservation and Recovery Act;
REACH - Regulation (EC) No 1907/2006 of the European Parliament and of the Council concern-
ing the Registration, Evaluation, Authorisation and Restriction of Chemicals; RQ - Reportable
Quantity; SADT - Self-Accelerating Decomposition Temperature; SARA - Superfund Amend-
ments and Reauthorization Act; SDS - Safety Data Sheet; TCSI - Taiwan Chemical Substance
Inventory; TECI - Thailand Existing Chemicals Inventory; TSCA - Toxic Substances Control Act
(United States); UN - United Nations; UNRTDG - United Nations Recommendations on the
Transport of Dangerous Goods; vPvB - Very Persistent and Very Bioaccumulative
The information provided in this Safety Data Sheet is correct to the best of our knowledge, infor-
mation and belief at the date of its publication. The information given is designed only as a guid-
ance for safe handling, use, processing, storage, transportation, disposal and release and is not
to be considered a warranty or quality specification. The information relates only to the specific
material designated and may not be valid for such material used in combination with any other
materials or in any process, unless specified in the text.
US / Z8
by | Sep 27, 2025
SAFETY DATA SHEET
NOROX MEKP-900 .
UNITED INITIATORS
Version Revision Date: SDS Number: Date of last issue: 12/04/2019
3.1 06/21/2021 600000000105 Date of first issue: 10/04/2016
SECTION 1. IDENTIFICATION
Trade name : NOROX* MEKP-900
Manufacturer or supplier’s details
Company name of supplier : United Initiators, Inc.
Address : 555 Garden Street
Elyria OH 44035 USA
Telephone 1 +1-440-323-3112
Telefax : +1-440-323-2659
Emergency telephone : CHEMTREC US (24h): +1-800-424-9300
CHEMTREC WORLD (24h): +1-703-527-3887
E-mail address of person : S-initiators.nafta@united-in.com
responsible for the SDS
Recommended use of the chemical and restrictions on use
Recommended use : Hardener
SECTION 2. HAZARDS IDENTIFICATION
GHS classification in accordance with the OSHA Hazard Communication Standard (29 CFR
1910.1200)
Flammable liquids : Category 4
Organic peroxides : Type D
Acute toxicity (Oral) : Category 4
Acute toxicity (Inhalation) : Category 4
Skin corrosion : Category 1B
Serious eye damage : Category 1
Reproductive toxicity : Category 2
Short-term (acute) aquatic : Category 2
hazard
GHS label elements
1/26
by | Sep 27, 2025
SAFETY DATA SHEET
NOROX CHP
UNITED INITIATORS
Version Revision Date: SDS Number: Date of last issue: 04/30/2018
2.0 04/09/2021 600000000292 Date of first issue: 12/19/2016
SECTION 1. IDENTIFICATION
Trade name : NOROX*CHP
CAS-No. : 80-15-9
Manufacturer or supplier’s details
Company name of supplier : United Initiators, Inc.
Address : 555 Garden Street
Elyria OH 44035 USA
Telephone 1 +1-440-323-3112
Telefax + +1-440-323-2659
Emergency telephone : CHEMTREC US (24h): +1-800-424-9300
CHEMTREC WORLD (24h): +1-703-527-3887
E-mail address of person : s-initiators.nafta@united-in.com
responsible for the SDS.
Recommended use of the chemical and restrictions on use
Recommended use : polymerization initiators
SECTION 2. HAZARDS IDENTIFICATION
GHS classification in accordance with the OSHA Hazard Communication Standard (29 CFR
1910.1200)
| Flammable liquids : Category 4
Organic peroxides : Type F
Acute toxicity (Oral) : Category 4
Acute toxicity (Inhalation) : Category 3
Acute toxicity (Dermal) : Category 4
Skin corrosion : Category 1B
Serious eye damage : Category 1
Specific target organ toxicity : Category 3 (Respiratory system)
– single exposure
Specific target organ toxicity : Category 2
– repeated exposure
1/25
by | Sep 27, 2025
Pr RkKEM n SAFETY DATA SHEET |
LUPEROX ATC50 |
[1. PRODUCT AND COMPANY IDENTIFICATION __ __ |
Company |
Arkema Inc. |
900 First Avenue
King of Prussia, Pennsylvania 19406
Functional Additives
Customer Service Telephone Number: (800) 331-7654
(Monday through Friday, 8:00 AM to 5:00 PM EST)
Emergency Information |
Transportation: CHEMTREC: (800) 424-9300
(24 hrs., 7 days a week)
Medical: Rocky Mountain Poison Center: (866) 767-5089
(24 hrs., 7 days a week)
Product Information
Product name: LUPEROX ATC50
Synonyms: Not available
Molecular formula: Complex mixture
Chemical family: Organic peroxide – diacyl peroxides
Product use: initiator/catalyst
2. HAZARDS IDENTIFICATION
Emergency Overview
Color: white
Physical state: semi-solid
Form: paste
Odor: Slightly benzaldehyde-like
*Classification of the substance or mixture:
Organic peroxides, Type E, H242
Eye irritation, Category 2B, H320
Skin sensitisation, Category 1, H317
Reproductive toxicity, Category 2, H361
Acute aquatic toxicity, Category 1, H400
Chronic aquatic toxicity, Category 1, H410
For the full text of the H-Statements mentioned in this Section, see Section 16.
Product code: 021000 Version 3.0 issued on: 05/21/2015 Page: 1/16
Quick-FDS [17309-11274-20835-014855] – 2015-05-22 – 03:07:54
by | Sep 27, 2025
12/16/2008 MATERIAL SAFETY DATA SHEET
PRODUCT / MATERIAL: CLAY
MANUFACTURER / DISTRIBUTOR: LAGUNA CLAY COMPANY
ADDRESS: 14400 Lomitas Avenue, City of Industry, CA 91746
PHONE / FAX / EMAIL: (626) 330-0631 / (626) 333-7694 / MSDS@lagunaclay.com
SECTION I – PRODUCT INFORMATION
TRADE NAME: EM210
SYNONYM: WHITE
CHEMICAL FAMILY: Ceramic Blend
SECTION II – HAZARDOUS INGREDIENTS
Maximum OSHA PEL NIOSH REL ACGIH TLV
INGREDIENT NAME . Percent _ CAS NUMBER TWA: (mg/m3) TWA: (mg/m3) TWA: (mg/m3)
Silica, Crystalline (Quartz) 12 14808-60-7 10 mg/m3 / 0.05 0.05
%SiIO2 + 2
Titanium Dioxide 1 13463-67-7 15 10
SECTION III – PHYSICAL DATA
BOILING POINT ( F) Not Applicable
VAPOR PRESSURE Not Applicable
VAPOR DENSITY Not Applicable
SOLUBILITY IN WATER Insoluble
SPECIFIC GRAVITY 1.7 – 3.7
PERCENT VOLATILE BY WEIGHT 0
EVAPORATION RATE 0
APPEARANCE AND ODOR Color varies between moist and dry state; no odor.
SECTION IV – FIRE AND EXPLOSION HAZARD DATA
FLASH POINT Not Flammable
EXTINGUISHING MEDIA Water
UNUSUAL FIRE OR EXPLOSION HAZARDS None
SPECIAL FIRE FIGHTING PROCEDURES None
SECTION V – REACTIVITY DATA
STABILITY FACTOR Product is stable.
INCOMPATIBILITY None
HAZARDOUS DECOMPOSITION PRODUCTS None. Hazardous polymerization will not occur.
CONDITIONS TO AVOID Inhalation of dust.
SECTION VI – HEALTH HAZARD DATA
+ Silica, Crystalline (Quartz)
A single exposure will not result in serious adverse health effects.
Respirable crystalline silica (quartz) can cause silicosis, a fibrosis (scarring) of the lungs. Silicosis may be
progressive; it may lead to disability and death. Crystalline silica (quartz) inhaled from occupational sources
is classified as carcinogenic to humans. There are some studies that show excess numbers of cases of
scleroderma and other connective tissue disorders in workers exposed to respirable crystalline silica.
EM210 Page 1 of 3
by | Sep 27, 2025
H|5materials SILICONE CASTING RUBBERS
By BJB Enterprises. Inc.
An ISO-9001 Certified company
ee
TC-5140 A/B
40 SHORE A TRANSLUCENT SILICONE RUBBER
TC-5140 A/B is a room temperature, addition/platinum curing silicone rubber designed for making molds and parts. Featuring
exceptional tear strength, low viscosity, 1:1 mix ratio, and a quick demold time, this system is user friendly while producing
high quality finished products. When used to make molds, the TC-5140 A/B is translucent enough to see through when casting
into the mold cavity. For making parts, this system is easily pigmented with BJB s 8100 Series Silicone Pigments.
e High Tear Strength Fast Cure
Translucent/Easily Pigmented Gaskets and Parts
e Low Viscosity Flexible Molds
PHYSICAL PROPERTIES RESULTS
Hardness, Shore A 4045
Density (g/cc) 1.164
Cubic Inches per Pound 24.11
Color/Appearance Colorless/Translucent
Tensile Strength (psi) 1,060
Tensile Modulus (psi) 375
Elongation (%) 420
Tear Strength (pli) 85
Shrinkage (in/in) linear 0.007-0.008
Dielectric Constant, 1 MHz 3.37
Dissipation Factor, 1 MHz 0.0126
*Note: Reported physical properties are based on test specimens cured 24 hours at room temperature.
+Shrink test specimens are cured for 7 days at room temperature.
HANDLING PROPERTIES : if Part A 5 Part B ae
Mix Ratio by weight 100
Mix Ratio by volume [ t00t i *@zY 100
Specific Gravity @ 77 F (25 C) 1.144
Color Colorless
Viscosity (cps) @ 77 F (25 C) Brookfield 7,800
Mixed Viscosity (cps) @ 77 F (25 C) Brookfield 6,800
Work Time, 100g mass @ 77 F (25 C) 30-40 minutes
Gel Time 50 60 minutes
Demold Time @ 77 F (25 C) 3-4 hours
Properties above are typical and not for specifications.
TC-5140 A/B Page 1 of 2 Date: 07/12/2022
For more information call BJB Enterprises, Inc. (714) 734-8450 Fax (714) 734-8929
www.bjbenterprises.com
