Di(4-methylbenzoyl) peroxide
Pharmaceutical Materials 2025-03-02
CAS Number: 895-85-2
Molecular Formula: C16H14O4
Molecular Weight: 270.28
Appearance: Paste (with silicon oil, content ≤ 52%)
Boiling Point: 401.9°C at 760 mmHg
Flash Point: 177.9°C
Usage: Used as a rubber vulcanizing agent and crosslinking agent.
| Attribute | Details |
|---|---|
| Chemical Name | Di(4-methylbenzoyl) peroxide |
| CAS Number | 895-85-2 |
| Synonyms | Peroxide, bis(4-methylbenzoyl); bis(4-methylphenyl)peroxyanhydride |
| Molecular Formula | C16H14O4 |
| Molecular Weight | 270.28 g/mol |
| Appearance | White to pale yellow crystalline powder or paste |
| Physical Properties | Density: 1.197 g/cm³; Boiling Point: 401.9°C at 760 mmHg; Flash Point: 177.9°C; Vapor Pressure: 1.14E-06 mmHg at 25°C |
| Solubility | Soluble in organic solvents such as benzene, chloroform, and ether; slightly soluble in ethanol and water |
| Stability | Stable under normal conditions. Decomposes when heated or exposed to light, producing carbon dioxide and 4-methylbenzoic acid as main decomposition products. |
| Main Uses | Used as a rubber vulcanizing agent and crosslinking agent in the rubber industry. It is also employed in the manufacture of polymers, particularly as a polymerization initiator for various monomers such as vinyl chloride and styrene. |
| Safety Information | Keep away from heat, sparks, and open flames. Avoid contact with skin, eyes, and clothing. Store in a cool, dry place in tightly closed containers. Handle with caution as it is a Class 5.2 dangerous good. |
| Supplier Information | Available from various suppliers globally, often packaged in 25 kg plastic drums or as per customer specifications. |
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