Product Name: Trigonox 42S (Chinese name: tert-butyl peroxy-3,5,5-trimethylhexanoate)

Chemical Properties:

• Molecular formula: C12H24O3
• Molecular weight: 230.3
• Active oxygen content: 6.74-6.95%
• Appearance: transparent liquid
• Color: within 50 Pt-Co / APHA
• Hydroperoxide content (calculated as TBHP): ≤ 0.099%
• Inorganic + organic hydrolyzable chlorine: ≤ 150 mg/kg
• Density (20°C): 0.900 g/cm3
• Viscosity (20°C): 5 mPa-s

CAS number: 13122-18-4 EINECS/ELINCS number: 236-050-7 TSCA Status: Listed on the TSCA inventory

Half-life data (in chlorobenzene):

• 0.1 hours: 135°C
• 1 hour: 114°C
• 10 hours: 94°C

Thermal Stability:

• Self-accelerating decomposition temperature (SADT): 55°C

Uses:

• As initiator of polymerization reactions, especially at high temperatures and pressures.
• Suitable for the polymerization of vinyl, acrylates and methacrylates, especially for the production of coatings.
• Can be used for styrene polymerization or copolymerization.
• Suitable for the preparation of thermoset composites.
• Used in thermo-compression molding formulations such as SMC, DMC, BMC, etc.

Packaging and storage:

• Standard packaging is 30 liter HDPE drums or 25 kg peroxide solution.
• Maximum storage temperature: 25°C
• Minimum storage temperature: -20°C
• Keep container tightly closed and store in a dry, well-ventilated area away from heat, ignition sources and direct sunlight.

Security and handling:

• Avoid contact with reducing agents (e.g., amines), acids, bases, and heavy metal compounds (e.g., accelerants, desiccants, and metal soaps).
• Refer to the Safety Data Sheet (SDS) for detailed information on safe storage, use and operation.

Main decomposition products:

• Carbon dioxide, methane, tert-butanol, acetone, 2-tert-butoxy-2,4,4-trimethylpentane