Product Overview
Dicumyl Peroxide (DCP, CAS No. 80-43-3) is an organic peroxide widely used as a crosslinking agent, polymer modifier, and flame retardant synergist. In EPS applications, DCP can be used together with brominated flame retardants to improve overall flame-retardant performance.
Dicumyl Peroxide Technical Specifications
Chemical Name: Dicumyl Peroxide
Abbreviation: DCP
Commercial Name: ST-DCP
| Property | Specification |
| Chemical Name | Dicumyl Peroxide |
| Abbreviation | DCP |
| CAS Number | 80-43-3 |
| Appearance | White Crystalline Granule / Powder |
| Assay (Purity) | ≥ 99.0% |
| Active Oxygen | ≥ 5.8% |
| Melting Point | 39 – 41 °C |
| Total Chlorine | ≤ 0.02% |
DCP as an EPS Flame Retardant Synergist
In EPS systems, DCP is used as a synergist together with brominated flame retardants. It can also be used in crosslinking and polymer modification applications outside EPS. For related EPS flame retardant solutions, see our ST-130– FR-130 Flame Retardant and Brominated SBS – ST-970.
Applications of Dicumyl Peroxide
EPS flame retardant synergist
Crosslinking of polyethylene and rubber
EVA and EPDM applications
Polymer modification
Controlled degradation and grafting processes
Core Advantages of ST-DCP
High Purity: Provides consistent performance in polymer and crosslinking applications.
Flame Retardant Synergy: Suitable for use with brominated flame retardants in EPS systems.
Crosslinking Performance: Widely used in polyethylene, EVA, EPDM, and related polymer applications.
Broad Polymer Compatibility: Suitable for crosslinking, polymer modification, and other organic peroxide applications.
Packaging & Logistics
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Standard Packing: 20kg or 25kg export-grade cartons with PE inner liners.
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Safety Warning: Dicumyl Peroxide is an organic peroxide (Type F). Store in a cool, dry, and well-ventilated area below 30°C. Keep away from direct sunlight and heat sources.