ST-DCP (Dicumyl Peroxide) – High-Efficiency Flame Retardant Synergist
Product Overview
ST-DCP (CAS No. 80-43-3), chemically known as Dicumyl Peroxide, is a critical functional additive in the EPS and polymer industries. While it serves as a powerful crosslinking agent for rubber and plastics, its most vital role for EPS manufacturers is as a Flame Retardant Synergist. When paired with brominated flame retardants like ST-130 or ST-970, ST-DCP significantly enhances fire resistance while optimizing cost-efficiency.
Technical Specifications (Standard Industrial Grade)
| 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% |
Core Solutions for EPS & Polymer Industries
Flame Retardancy Synergy: Dicumyl Peroxide is the industry-standard synergist for EPS. It promotes the decomposition of bromine-based flame retardants at lower temperatures, creating a faster and more effective fire-extinguishing barrier.
Crosslinking Excellence: For XLPE (Cross-linked Polyethylene) and various rubber applications (EVA, EPDM), Dicumyl Peroxide provides superior mechanical strength and thermal stability.
Polymer Modification: Used as an initiator for grafting and controlled degradation of polypropylene (PP).
Why Choose Senthos ST-DCP?
Synergistic Optimization: Our Dicumyl Peroxide is specifically screened for particle size compatibility with EPS beads, ensuring uniform distribution and maximum fire safety.
Low Impurity Profile: With ultra-low chlorine and moisture levels, ST-DCP protects the integrity of your polymer matrix without causing discoloration.
HBCD-Free Compatible: Perfectly optimized to work with the latest generation of eco-friendly flame retardants, supporting your transition to sustainable production.
Global Regulatory Compliance: Fully registered and compliant with REACH (EU), TSCA (USA), and IECSC (China).
Packaging & Logistics
Standard Packing: 20kg or 25kg export-grade cartons with PE inner liners.
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.