United Initiators CUROX®M-303 Methyl ethyl ketone peroxide 1338-23-4
Description: CUROX® M-303 is a colorless liquid consisting of a mixture of peroxides based on methyl ethyl ketone peroxides desensitized mainly by phthalate plasticizers. The peroxide is used as initiator (free radical source) in the curing of unsaturated polyester resins. Main application areas: Room temperature curing of gelatin layers, molded, cast or glass fiber reinforced products, in combination with cobalt accelerators. Technical Data: Appearance: Colourless liquid Active oxygen: approx. 9.1% (% by mass) Free hydrogen peroxide content: approx. 1.7% (% by mass) Moisture content: approx. 1.5% (% by mass) Desensitizing agent: o-o