Technical Data Sheet
NOROX
MEKP-925
Methyl ethyl ketone peroxide
CAS#1338-23-4
Liquid mixture
Description
Norox MEKP-925 has a high MEKP dimer content that gives excellent
performance in most vinyl ester resins. Norox MEKP-925 also performs well
when used with general purpose ortho and isophthallic resins. Norox MEKP-
925 should be considered when an initiator is desired for use with most all
resin types.
Technical Data
Active Oxygen: 9.0% max.
Form: Liquid
Color: Water White
Specific Gravity @ 25 C: 1.10
Flash point (C.O.C.): 200 F, min.
Flash point (SETA C.C.): 170 F, min.
Soluble in: Oxygenated organic solvents
Slightly soluble in: Water
SADT <140 F (60 C)
Storage temp: <80 F(27 C)
Max Transport Temp: <80 F(27 C)
Application
Norox MEKP-925 is a methyl ethyl ketone peroxide composition
formulated to be an excellent cure initiator for both unsaturated
polyester resins and vinyl ester resins. With most unsaturated
polyesters it gives longer gel and gel to cure times but with a higher
peak exotherm than Norox MEKP-9, particularly in thick sections.
Technical Data Sheet
PACKAGING, SHIPPING & AVAILABILITY
The standard package sizes of Norox MEKP-925 are cases of 4x8
lb/ 4x3.6 kg. polyethylene bottles; and 44 lb. or 20 kg Hedpacks. For
custom package sizes, please contact your local distributor or United
Initiators, Inc.
Classification Please refer to the specific Norox MEKP-925 Safety
Data Sheet under section 14, Shipping Description.
Norox MEKP-925 is available through a nation-wide distributor
network. Call United Initiators, Inc. for the name of the distributor in
your area.
This information and our application-technical advice whether verbal, in writing or by way of trials reflect our present state of knowledge based on internal tests with local raw
materials. Their purpose is to inform interested parties about our products and their possible application. They should not be construed as guaranteeing specific product properties or
their suitability for a particular application. Furthermore, the information does not contain complete instructions for use. Nor does it constitute a guarantee as to quality and durability.
Changes due to technical progress and corporate advancement reserved. Any existing third-party copyrights are to be taken into account.
Application and use of our products based on our application-specific advice is beyond our control and sole responsibility of the user. The user is not released from the obligation of
verifying the suitability and applicability as to the intended purpose.
T: +49 89 74422 237
F: +49 89 74422 6237
cs-initiators.eu@united-in.com
T: +1 800 231 2702
F. +1 440 323 0898
cs-initiators.nafta@united-in.com
T: +86 20 6131 1370
F: +86 139 2503 8952
cs-initiators.cn@united-in.com
T: +61 2 9316 0046
F: +61 2 9316 0034
cs-initiators.au@united-in.com
www.united-initiators.com
Revision number: 1.0. Date: 03.03.14. Device M: TDS.