Product Description

Trigonox 289-IN VR is a mixture of methyl ethyl ketone peroxide and cumyl hydroperoxide in a solvent blend, manufactured by Nouryon. It is a special peroxide formulation with a Vanishing Red (VR) indicator system, suitable for curing unsaturated polyester and vinyl ester resins at ambient conditions in conjunction with a metal accelerator.

CAS Number	TSCA status
1338-23-4; 80-15-9	listed on inventory
Appearance, 20-25°C	EINECS/ELINCS
Clear red liquid	No.215-661-2; 201-254-7
Total active oxygen
8.8-9.0 %
Characteristics
Density, 20℃	1.16 g/cm³
Viscosity, 20 °C	23 mPa.s
Application
Trigonox® 289-IN VR is a convenient initiator suitable for curing unsaturated polyester, vinyl ester and acrylic thermosetting resins at ambient conditions in conjunction with a metal salt. Trigonox® 289-IN VR offers the advantages of a standard red peroxide formulation to indicate product flow and proper mixing into the resin. The vanishing red (VR) series of products however include a red indicator system that disappears during the cure. The red color is only visible when needed but not in the finished end product. The key features are: indicates initiator presence, monitoring of the mixing step, monitoring of the cure by color and indicating under-cured area's in the mould, and last but not least it leaves the end product colorless after the cure.