Dicumene: High-Stability Flame Retardant Synergist for EPS
Product Overview
Dicumene, chemically known as 2,3-Dimethyl-2,3-diphenylbutane (CAS No. 1889-67-4), is a highly effective and environmentally friendly Flame Retardant Synergist. It is specifically designed for Expanded Polystyrene (EPS) and Extruded Polystyrene (XPS) applications. As the leading EPS additive solution provider, Senthos offers premium Dicumene that provides superior thermal stability compared to traditional peroxides, making it the perfect partner for brominated flame retardants in high-temperature processing.
Detailed Technical Specifications (TDS)
Our Dicumene features high purity and precise molecular structure to ensure consistent synergistic performance:
| Property | Technical Standard |
| Common Name | Dicumene |
| CAS Number | 1889-67-4 |
| Chemical Name | 2,3-Dimethyl-2,3-diphenylbutane |
| Molecular Formula | C16H18 |
| Appearance | White to off-white powder or crystal |
| Assay (Purity) | ≥ 98.0% / ≥ 99.0% |
| Melting Point | 110°C – 118°C |
| Loss on Drying | ≤ 0.5% |
| Initial Decomposition Temp. | ≥ 230°C |
Key Performance & Synergistic Benefits
Superior Synergistic Effect: Dicumene is widely used as a synergist for ST-130 (Methyl Octabromoether) and ST-970 (Brominated SBS). By acting as a free-radical initiator at combustion temperatures, it significantly enhances flame-retardant efficiency and helps achieve V-0 fire ratings.
Excellent Thermal Stability: Unlike DCP, Dicumene is extremely stable at standard processing temperatures. Its high initial decomposition temperature (230°C) ensures it remains active until the exact moment of combustion, preventing premature reaction during extrusion.
Environmentally Friendly: Dicumene is a non-peroxide synergist, making it safer to handle, transport, and store. It is the preferred choice for manufacturers looking for sustainable and high-performance EPS Flame Retardants.
Minimal Impact on Polymer Properties: Due to its stable chemical nature, it does not interfere with the polymerization or physical properties of the EPS beads, ensuring high-quality foam production.
Packaging, Storage & Global Logistics
Packaging: Standard 20kg/25kg bag, carton box, or as required.
Storage Requirements: Store in a cool, dry, and well-ventilated warehouse. Keep away from heat sources and direct sunlight.
Safe Logistics: Non-regulated for transport, allowing for cost-effective and streamlined global shipping compared to organic peroxides.
