Nouryon Trigonox 21-C50 tert-butyl peroxy-2-ethylhexanoate, 50% Isodododecane solution 3006-82-4

Trigonox 21-C50

tert-Butyl peroxy-2-ethylhexanoate, 50% isododecane solution

CAS Number: 3006-82-4

Physical form: liquid

Trigonox® 21-C50 is an initiator for the polymerization of (meth)acrylates and vinyls. Initiator for curing unsaturated polyester, vinyl ester and acrylic thermoset resins.


For polymer production/poly(meth)acrylic acid: ethylene polymerization: Trigonox® 21-C50 is an effective initiator for the production of low density polyethylene (LDPE). It is used in tube and autoclave processes. In most cases, combinations with other peroxides are used to ensure a broad reaction range. Styrene polymerization: In suspension polymerization, Trigonox® 21-C50 can be used to polymerize styrene at approx. 90°C. It can be used in a wide range of applications. The activity of Trigonox® 21-C50 is comparable to that of dibenzoyl peroxide (Perkadox L-W75). Typically, Trigonox® 21-C50 is used in combination with an initiator such as tert-butyl peroxybenzoate (Trigonox® C). Polymerization of Acrylates and Methacrylates: Trigonox® 21-C50 is an effective initiator for the solution (co)polymerization of acrylates and methacrylates in the temperature range of 65-100°C, especially for the manufacture of coatings. Trigonox® 21-C50 can also be used as an initiator for the native polymerization and suspension (co)polymerization of acrylates and methacrylates. For thermoset resins: Trigonox® 21-C50 is a suitable initiator for curing unsaturated polyester, vinyl ester and acrylic thermoset resins in the temperature range of 100 - 140°C (212 - 284°F). Trigonox® 21-C50 is a classic intermediate initiator for pultrusion molding applications and is also widely used in molded plastics and field-cured piping systems. The activation temperature of Trigonox® 21-C50 can be lowered by using metal salts such as cobalt octanoate.

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