Methyl ethyl ketone peroxide MEKP 1338-23-4; 131-11-3

Methyl ethyl ketone peroxide

Trade name: Initiator MEKP

English name: Methyl ethyl ketone peroxide

Chemical name: Methyl ethyl ketone peroxide

Chemical structural formula:

Molecular formula: C8H18O6

Molecular weight: 210.2

Theoretical active oxygen content: 9.8-10.0%

CAS No. 1338-23-4 131-11-3

UN No. 3105

Type D liquid organic peroxide.

Main decomposition products: CO2, water, acetic acid, formic acid, propionic acid, methyl ethyl ketone, etc.

Security indicators:

Half-life (measured in chlorobenzene solution):

0.1 hours:-

1 hour:-

10 hours:-

Thermal stability data:

Self-accelerated decomposition temperature (SADT): 60 °C

Critical temperature (Tem): -

Control temperature (Tc): -

Storage temperature (Tsmax): -10/25 °C

Technical standards:

Appearance: colorless transparent liquid


This product is the most commonly used curing agent for unsaturated polyester, mainly used in the curing of unsaturated polyester at room temperature and medium temperature, it is usually used in conjunction with cobalt accelerators.

Packaging and Transportation:

The standard packing of our factory is 20kg polyethylene packing. It can also be supplied according to customer's required packing size, which can be requested by the customer at the time of ordering.

Storage Precautions:

1、Store in a cool and ventilated space, with the temperature of the warehouse not exceeding 250C.

2. Keep away from fire and heat source. It should be stored separately from acids, reducing agents, flammables, combustibles and reducing agents.

3. The lighting and ventilation of the storage room and other facilities are of explosion-proof type, and the switch is located outdoors.

4, handling should be careful and light, to prevent damage to packaging and containers, prohibit impact and oscillation, packaging and handling operations should pay attention to personal protection.

5、Please read our "MSDS" carefully when storing, transporting and using the product.

Product expiration date:

Strictly in accordance with the conditions of storage and transportation prompted by the manufacturer, the quality of the product can be really guaranteed within three months.

Fire protection:

1, the product may be due to heat and violent decomposition, will be violent fire, a small amount of product small fire should be quickly extinguished with foam or dry powder fire extinguisher.

2, the fire should be quickly withdrawn to a safe distance away and put out with a water gun, notify the fire department to deal with.

We offer products for sale in China (in compliance withRegulations on the Administration of Internet Sales of Hazardous Chemicals) and some of the products of the global export services, can provide including hazardous chemicals packaging, "outbound cargo packaging performance inspection certificate", "commodity inspection list" and other related export procedures.
We have experience in exporting hazardous chemicals, including Class 5.2 Dangerous Goods with Cold Chain Transportation Products, Class 3 Dangerous Goods and Class 9 Dangerous Goods, etc., and have exported to the United States of America, Russia, Turkey, India, Ukraine and other countries.

Be ready Worked with us?

We are committed to provide customers with customizable products and solutions to win the market through professional technology, fast process, efficient implementation, and become the best service provider in the new material industry.