Product Name: Laurox
Chemical Name: Dilauroyl Peroxide
- CAS Number: 105-74-8
- EINECS/ELINCS Number: 203-326-3
- TSCA Status: Listed
- Molecular Weight: 398.6 g/mol
- Active Oxygen Content: 4.01%
Specifications
- Appearance: White powder free of any impurities
- Purity: ≥ 99.0%
- Particle size: > 1 mm ≤ 5%, > 2 mm - %
- Bulk Density: 460 kg/m³
- Melting Point: 54 °C
Applications
Vinyl chloride polymerization
- Temperature range: 60–80 °C
- Function: Used as an initiator for vinyl chloride suspension and bulk polymerization
- Compatibility: Can be used in combination with other highly reactive peroxides (such as peroxydicarbonates like Perkadox 16) to enhance reactivity
Ethylene Polymerization
- Function: Used as an initiator for high-pressure ethylene polymerization
- Notes: Due to its very low solubility in most aliphatic solvents, it is often replaced by bis(3,5,5-trimethylacetyl) peroxide (Trigonox 36)
- Advantages: Can be stored at room temperature
Acrylate and Methacrylate Polymerization
- Temperature Range: 60–90°C
- Function: Used as an initiator for methacrylate polymerization
- Common substitutes: 2,2'-azobis(isobutyronitrile) (Perkadox AIBN)
Thermosetting composites
- Function: Used as an initiator to cure acrylic solid surfaces at high temperatures
Half-life data
- Half-life in chlorobenzene:
- 0.1 hour at 99°C
- 1 hour at 79°C
- 10 hours at 61°C
- Formula:
- kd = A·e⁻Ea/RT
- t½ = (ln 2)/kd
- Ea = 123.37 kJ/mole
- A = 3.92E+14 s⁻¹
- R = 8.3142 J/mole·K
- T = (273.15 + °C) K
Thermal Stability
- Self-accelerating decomposition temperature (SADT): 50°C
- Method: In accordance with the *Manual of Tests and Criteria* of the *Recommendations on the Transport of Dangerous Goods*
Storage
- Maximum storage temperature: 30°C
- Shelf Life: At least 3 months (under recommended conditions)
Packaging and Shipping
- Standard Packaging: 25 kg cardboard box
- Transport Classification: Class D Organic Peroxides, Solid, Division 5.2, UN 3106
Safety and Handling
- Storage and Handling Recommendations: Keep container tightly closed; store in a dry, well-ventilated area; keep away from heat, ignition sources, and direct sunlight. Avoid contact with reducing agents, acids, bases, and heavy metal compounds.
Major Decomposition Products
- Carbon dioxide, docosane, undecane, undecyl dodecanoate