Methylethyl Ketone Peroxide
Industrial Application
Methyl Ethyl Ketone Peroxide (MEKP) is a highly reactive organic peroxide used as a free-radical initiator and curing agent in industrial polymer and resin applications. It is primarily employed in the curing of unsaturated polyester resins, fiberglass-reinforced plastics, and gelcoats, where its controlled decomposition generates radicals that initiate rapid polymerization and crosslinking. MEKP is widely used in the production of high-quality plastics, polymer-based coatings, adhesives, and elastomer systems, ensuring uniform curing, strong adhesion, and enhanced mechanical and chemical resistance. In the automotive industry, MEKP plays a critical role in manufacturing fiberglass and composite components, body panels, bumpers, gelcoats, and coatings, providing durability, chemical resistance, and structural integrity. Due to its highly reactive and oxidizing nature, MEKP is handled under strict safety protocols and is not used in cosmetic or personal care applications.
Physical Properties
Methylethyl Ketone Peroxide is an organic peroxide usually supplied as a solution in phlegmatizers (such as dimethyl phthalate) to reduce its high instability and shock sensitivity. It is a colorless to slightly yellow liquid with a pungent, sharp odor and is only moderately soluble in water but readily soluble in many organic solvents. MEKP is highly reactive and decomposes exothermically, releasing oxygen, making it both a strong oxidizer and a hazardous material requiring careful handling.
Grade
- Industrial
Other Names
- 2-Butanone Peroxide
- Butanone Peroxide
Form
- Liquid
Supply Form
- Liquid mixture, Long gelation
- Liquid mixture, Normal gelation
- Liquid mixture, Standard
- Liquid mixture, Standard, Red
- Liquid, Red
- Liquid mixture, Standard
- Liquid mixture
- Liquid mixture, Very fast gelation
- Liquid mixture, Very fast gelation, Red
Peroxide Content
- ~34
- ~30
- Blend
- ~28
- ~28
Abbreviations
- MEKP
Packaging
- HDPE Canisters
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