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 Structure:
Molecular Formula: C8H18O6
Molecular Weight: 210.2
Theoretical Active Oxygen Content: 9.8–10.0%
CAS Number: 1338-23-4 131-11-3
UN No. 3105
Type D liquid organic peroxide.
Major decomposition products: CO₂, water, acetic acid, formic acid, propionic acid, methyl ethyl ketone, etc.
Safety Parameters:
Half-life (measured in chlorobenzene solution):
0.1 hour: --
1 hour: --
10 hours: --
Thermal Stability Data:
Self-Accelerating Decomposition Temperature (SADT): 60 °C
Critical Temperature (Tem): --
Control Temperature (Tc): --
Storage Temperature (Tsmax): -10/25 °C
Technical Specifications:
Appearance: Colorless, transparent liquid
Applications:
This product is the most commonly used curing agent for unsaturated polyesters, primarily employed for room-temperature and medium-temperature curing of unsaturated polyesters. It is typically used in conjunction with cobalt-based accelerators.
Packaging and Shipping:
Our standard packaging is 20 kg polyethylene bags. We can also supply packaging sizes according to customer requirements; customers may specify these when placing an order.
Storage Precautions:
1. Store in a cool, well-ventilated area at a temperature not exceeding 25°C.
2. Keep away from sources of ignition and heat. Store separately from acids, reducing agents, flammable materials, combustible materials, and other reducing agents.
3. Lighting and ventilation systems in the storage area must be explosion-proof, with switches located outdoors.
4. Handle with care during transportation to prevent damage to packaging and containers. Avoid impacts and vibrations. Wear appropriate personal protective equipment during repackaging and handling operations.
5. Customers are advised to carefully read our factory’s “Material Safety Data Sheet (MSDS)” when storing, transporting, and using this product.
Product Shelf Life:
When stored and transported strictly in accordance with the manufacturer’s instructions, product quality is guaranteed for three months.
Fire Protection:
1. This product may decompose violently when exposed to heat, causing a fierce fire. Small fires involving a small amount of the product should be extinguished immediately using a foam or dry powder fire extinguisher.
2. In the event of a large fire, evacuate immediately to a safe distance and use a water hose to extinguish the flames; notify the fire department for further handling.