Chemical Name
Tert-amyl peroxypivalate
Alias: TAPV
Structure
Molecular Weight (MW): 188.3
CAS No.: 29240-17-3
EINECS / ELINCS No.: 64741-65-7
TSCA Status: Listed
Introduction
TAPV is a colorless transparent liquid. It belongs to ester-type organic peroxide. It is mainly used as an initiator for the polymerization and copolymerization of acrylates, methacrylates, ethylene and styrene, offering efficient and well-controlled initiation behavior.
Specifications
Appearance: Clear liquid
Color: ≤ 30 Pt-Co
Assay (%): 74.0 – 76.0
Active Oxygen (%): 6.29 – 6.46
Hydroperoxides as TAHP (%): ≤ 0.10
Inorganic + organic hydrolysable chloride: ≤ 200 mg/kg
Properties
State: Liquid
Density (20 °C, g/cm³): 0.89
Half-life Data
Half-life data of TAPV in chlorobenzene are as follows:
10 h Half-life (°C): 54
1 h Half-life (°C): 72
0.1 h Half-life (°C): 91
Activation Energy Ea (kJ/mol): 127.76
Thermal Stability
Maximum recommended storage temperature Ts max (°C): -10
Minimum recommended storage temperature Ts min (°C): -30
Self-Accelerating Decomposition Temperature SADT (°C): 25
Safety Data
Hazard Classification: Organic Peroxide Type C, Liquid, Temperature Controlled
Hazard Class: 5.2
UN No.: 3113
Packaging
Packaging: 25 L HDPE Drum
Storage
Storage Conditions: Stored at -30 °C to -10 °C in a cool and ventilated place.
Handling Precautions
- Keep containers tightly closed
• Keep away from heat sources, ignition sources and direct sunlight
• Do not weigh or repackage in storage areas
• Avoid contact with reducing agents (such as amines), acids, bases and heavy metal compounds (accelerators, metal soaps, etc.
