MEKP Liquid Catalyst

Material • Studio
MEKP Liquid Catalyst


Important Links

MEKP (Methyl Ethyl Ketone Peroxide) is the catalyst added to polyester resins and vinyl ester resins. As the catalyst mixes with the resin, a chemical reaction occurs, creating heat which cures (hardens) the resin. Use approximately 1/2 oz per quart of resin.

Personal Protective Equipment

Protective Eyewear Required

Wear chemical splash goggles or face mask

Wear protective clothing.

Wear a rubber apron.

Wear rubber gloves

Severe skin irritant. If exposure, wash with soap and water.


Oxidizing Material

Keep from heat and fire.

Harmful Vapor.

Causes severe burns. Harmful or Fatal if Swallowed.

Safety Checks

  • Ensure that your environment is free from heat sources.
  • Use only the dispenser bottle to pour catalyst.

Operational Checks

  • The reaction with resin will produce some heat.


  • Return MEKP to the flammables cabinet.