Methyl ethyl ketone peroxide (MEKP) is a chemical compound used as a polymerization initiator in the manufacture of fiberglass-reinforced plastics, unsaturated polyester resins, and other composites. 

• Chemical formula: (C4H8O2)2
• Appearance: Colorless to pale yellow liquid
• Boiling point: Around 101°C
• Solubility: Soluble in organic solvents such as acetone and toluene.

Uses:

• Composites Industry: MEKP is commonly used as a curing agent in the manufacturing of fiberglass-reinforced plastic parts, such as boat hulls, automobile parts, and tanks.
• Polyester resins: It is often added to unsaturated polyester resins to initiate polymerization, creating a hard, strong material.
• Adhesives and Coatings: Used as a hardener in some adhesives and coatings.

Risks and security:

• MEKP is an organic peroxide and may be flammable. It must be handled with care.
• It may react violently with reducing materials, strong bases and other incompatible substances.
• MEKP vapors may be irritating to the eyes and respiratory tract. Adequate ventilation is required when handling.

Storage :

• Store in a cool, well-ventilated place out of direct sunlight.
• Avoid storage near incompatible materials.
• Use plastic or glass containers.

Safe handling:

• Use personal protective equipment (PPE) such as gloves, eye protection and protective clothing.
• Avoid contact with skin, eyes and respiratory tract.

Transport :

• The transport of MEKP is subject to specific regulations due to its peroxide nature. Comply with local and international regulations on the transport of hazardous chemicals.