Di-(2,4-Dichlorobenzoyl) Peroxide (DCBP, CAS 133-14-2), a high-performance ​​organic peroxide initiator​​, is revolutionizing silicone rubber manufacturing and resin anchoring systems. With the molecular formula ​​C₁₄H₆Cl₄O₄​​ and molecular weight of ​​380.01 g/mol​​, this compound delivers unmatched reactivity at low temperatures while adhering to stringent industrial safety standards

Technical Specifications & Physical Properties​​

​​Parameter​​

​​Value​​

Physical State

White to pale yellow crystalline powder or paste (50–99% purity grades)

Melting Point

55°C (decomposition)

Density

1.60 g/cm³

Solubility

Insoluble in water; soluble in benzene, chloroform, acetone

Flash Point

194°C

Half-Life (t₁/₂)

Decomposes at 45°C

​​Critical Safety Classifications​​:

​​UN Transport Codes​​: 3106 (silicon oil paste), 3118 (pure form), 3102 (hydrated)

​​GHS Hazard Category​​: Type B Organic Peroxide (explosive when dry)

​​Explosion Triggers​​: Friction, heat, shock, or contact with amines/reducing agents

​​Industrial Applications Driving Demand​​

​​1. Silicone Rubber Vulcanization​​

As a ​​primary vulcanizing agent​​, DCBP enables:

​​High Crosslinking Density​​: >99% crosslinking in extrusion-molded medical tubing and seals

​​Transparency Control​​: Critical for optical-grade silicone products (e.g., LED encapsulants)

​​Energy Efficiency​​: Curing at 40–60°C vs. 100°C+ for traditional peroxides

​​2. Resin Anchoring Systems​​

​​Rapid Curing​​: Reduces setting time by ​​85%​​ in construction adhesives vs. benzoyl peroxide (BPO)

​​Low-Temperature Performance​​: Enables reliable anchoring at sub-10°C environments

​​3. Composite Materials​​

​​Fiberglass Reinforcements​​: Accelerates polyester resin curing in marine/auto parts

​​Artificial Stone Production​​: Minimizes voids in marble/quartz composites

​​Safety Protocols: Non-Negotiable Handling Rules​​

DCBP’s ​​decomposition above 45°C​​ releases chlorine gas and poses explosion risks. Mandatory protocols include:

​​Storage​​: ≤30°C in sealed containers; stabilize pastes with silicone oil

​​PPE Requirements​​: Butyl rubber gloves, full-face shields, anti-static suits

​​Spill Response​​:

Absorb with inert materials (vermiculite/sand)

​​Never use water jets​​ – triggers violent decomposition

​​Firefighting​​: CO₂ fog or alcohol-resistant foam only

⚠️ ​​Acute Toxicity Data​​: LD₅₀ (mouse, peritoneal): 225 mg/kg

​​Future Innovations & Sustainability Trends​​

​​Bio-Based Stabilizers​​: Silicone-oil-free formulations to reduce aquatic toxicity

​​Closed-Loop Processing​​: Recycling decomposition byproducts (HCl) into PVC feedstocks

​​Digital Monitoring​​: IoT temperature sensors for real-time storage stability alerts

​​Regulatory Compliance & Transport​​

​​UN Packaging Group​​: II (hydrated forms), III (paste)

​​Prohibited Transport Partners​​: Acids, oxidizers, flammable solids

​​China Regulatory Status​​: Listed in Hazardous Chemicals Directory(2015)

​​Di-(2,4-Dichlorobenzoyl) Peroxide (CAS 133-14-2)​​ remains indispensable for high-precision vulcanization, balancing explosive reactivity with evolving green chemistry solutions. For technical specifications or supplier verification, consult Guidechemor ChemicalBookwith batch-specific COAs.