tert-Butyl PeroxybenzoateTrigonox C TBPB

Trigonox C Product Description

Trigonox C is a monofunctional peroxide, the chemical name is tert-butyl peroxybenzoate, and it is an aromatic peroxide used for high temperature curing of unsaturated polyester resins. Trigonox® C is preferentially used for thermocompression molding of unsaturated polyester resins (SMC, BMC, etc.) within the temperature range of 120-170°C. It can also be used in combination with highly active peroxides such as Perkadox 16 or Trigonox® HM as co-accelerators for pultrusion processes in the range of 100-150 °C.

Description tert-Butyl peroxybenzoate

                                                                                                          

Molecular weight : 194.2

Active oxygen content peroxide : 8.24%

CAS No. : 614-45-9

EINECS/ELINCS No. : 210-382-2

TSCA status : listed on inventory

Specifications Appearance : Clear liquid

Color : 100 Pt-Co / APHA max.

Assay : 98.0% min.

Active Oxygen : 8.07% min.

Hydroperoxides as TBHP : 0.10% max. Inorganic + organic hydrolysable chloride : 50 mg/kg max.

Characteristics Density, 20°C : 1.04 g/cm3

Viscosity, 20°C : 6.5 mPa.s

Crystallization point : 8°C; tends to undercooling

Storage Due to the relatively unstable nature of organic peroxides a loss of quality can be detected over a period of time. To minimize the loss of quality,

AkzoNobel recommends a maximum storage temperature (Ts max.) for each organic peroxide product.

For Trigonox C Ts max. = 25°C (77°F) and

Ts min. = 10°C (50°F) to prevent crystallization

When stored under the recommended storage conditions, Trigonox C will remain within the AkzoNobel specifications for a period of at least six months after delivery.

Thermal stability Organic peroxides are thermally unstable substances, which may undergo self-accelerating decomposition. The lowest temperature at which self- accelerating decomposition of a substance in the original packaging may occur is the Self-Accelerating Decomposition Temperature (SADT). The SADT is determined on the basis of the Heat Accumulation Storage Test.

For Trigonox C SADT : 60°C (140°F)

Major decomposition products

Safety and handling Keep containers tightly closed. Store and handle Trigonox C in a dry well- ventilated place away from sources of heat or ignition and direct sunlight. Never weigh out in the storage room.

Avoid contact with reducing agents (e.g. amines), acids, alkalis and heavy metal compounds (e.g. accelerators, driers and metal soaps).