Dimyristyl Peroxydicarbonate (MYPC, CAS 53220-22-7), a high-efficiency low-temperature initiator, is critical for optimizing vinyl chloride polymerization and acrylic resin synthesis. With the molecular formula C₃₀H₅₈O₆ and molecular weight of 514.8 g/mol, this organic peroxide enables precise control over polymer molecular weight distribution while reducing energy consumption and defects in industrial-scale production
Technical Specifications & Physicochemical Properties
Parameter
Value
Physical State
White crystalline powder (95–99% purity)
Melting Point
Decomposes at 55°C
Density
0.947 g/cm³
Solubility
Insoluble in water; soluble in acetone, hydrocarbons
Theoretical Active Oxygen
3.11%
UN Transport Class
UN 3116 (Type D organic peroxide)
Critical Safety Parameters:
Self-Accelerating Decomposition Temperature (SADT): 35°C
Half-Life (t₁/₂): 10h at 48°C, 1h at 65°C, 0.1h at 84°C
Storage Stability: ≤3 months below 15°C; alarm threshold: 25°C
Industrial Applications Driving Demand
1. PVC Production
As a primary initiator, MYPC enables:
Energy-Efficient Polymerization: Operates at 40–65°C (vs. 70–90°C for traditional peroxides), cutting energy costs by 30% .
Defect Reduction: Minimizes "fish eyes" in suspension PVC by controlling nucleation kinetics .
Co-initiator Synergy: Compatible with LPO, CUPD, and TMPD for tailored reaction rates .
2. Acrylic & Specialty Polymers
Methyl Methacrylate (MMA): Achieves >95% conversion with polydispersity (Đ) <2.0 .
UV-Curable Coatings: Enhances crosslinking density in optical-grade resins for LED encapsulants .
Safety Protocols: Non-Negotiable Handling Rules
MYPC’s low SADT (35°C) mandates stringent protocols:
Storage: ≤15°C in sealed containers; isolate from acids, metals, and reducing agents .
PPE Requirements: Butyl rubber gloves + full-face shields for solid handling .
Emergency Response:
Fire: Use alcohol-resistant foam—water jets trigger explosive decomposition .
Spills: Absorb with inert materials (vermiculite/sand); store in ventilated plastic containers .
⚠️ Regulatory Compliance:
GHS Classification: Type D peroxide (H242: heating may cause fire) .
Transport Restrictions: Banned in air/rail transport; road shipping requires temperature-controlled vehicles .
Future Innovations & Sustainability Trends
Bio-Based Stabilizers: Replacing synthetic dispersants with starch derivatives to reduce aquatic toxicity (patent pending, 2026) .
Solid-State Formulations: Nanoclay additives to extend shelf life at 20°C (pilot phase) .
Circular Economy Integration: Recycling decomposition byproducts (e.g., tetradecanol) into surfactant production