Tert-Amyl peroxybenzoate
Tert-Amyl peroxybenzoate. CAS Number: 4511-39-1. EINECS: 224-831-5.
Product Appearance & Packaging
Product Specifications
| Product Name | Tert-Amyl peroxybenzoate |
|---|---|
| Chemical Name | Tert-Amyl peroxybenzoate |
| CAS Number | 4511-39-1 |
| EINECS/ELINCS No. | 224-831-5 |
| Molecular Weight | 208.3 g/mol |
| Active Oxygen Content | 7.68% |
| Appearance | Clear liquid |
| UN Classification | Organic peroxide type C; liquid, Division 5.2; UN 3103 |
| Packaging | 20 kg |
Industrial Applications
(Co)polymerization of styrene in the temperature range of 100-135°C. Often used with more active initiators such as dibenzoyl peroxide or tert-butyl peroxy-2-ethylhexanoate.
Half-Life Data
Half-life (t½) data for Tert-Amyl peroxybenzoate measured in chlorobenzene:
| Half-Life (t½) | Temperature |
|---|---|
| 0.1 hr | 139°C (282°F) |
| 1 hr | 118°C (244°F) |
| 10 hr | 99°C (210°F) |
Kinetic formulas:
kd = A·e−Ea/RT | t½ = (ln2) / kd
Ea = 147.02 kJ/mole | A = 8.38E+15 s⁻¹ | R = 8.3142 J/mole·K | T = (273.15+°C) K
Thermal Stability
Organic peroxides are thermally unstable substances which may undergo self-accelerating decomposition. The Self Accelerating Decomposition Temperature (SADT) is the lowest temperature at which self-accelerating decomposition may occur.
Recommended Storage
Note: When stored according to these recommended conditions, Tert-Amyl peroxybenzoate will remain within specifications for a period of at least 3 months after delivery.
Major Decomposition Products
In the event of thermal decomposition, Tert-Amyl peroxybenzoate produces the following major decomposition products: