Dicumyl Peroxide (DCP) is an organic peroxide with the chemical formula C18H22O2 that is widely used in the rubber and plastic industries as a cross-linking agent and polymerization initiator. It decomposes at high temperatures and produces free radicals that help cross-link polymers and improve their thermal, mechanical, and chemical properties. DCP plays a key role in the production of heat-resistant rubbers, thermoset polymers, and polymer foams such as EVA, which are used in the footwear, insulation, and packaging industries.
Technical Characteristics
| Chemical Formula | [C6H5C(CH3)2]2O2 |
| Other names | Bis(1-methyl-1-phenylethyl) peroxide Bis (α, α-dimethylbenzyl) peroxide PEROXAN DC-80 Dialcyl peroxide LUPEROX DCP |
| CAS Number | 80-43-3 |
| Molar mass | 270.372 g·mol−1 |
| SADT | 80 °C |
| maximum storage temperature | ≤ 20 °C |
| Active oxygen | 4.74 wt.% |
| Appearance | white powder |
Applications
Polymerization initiator of expanded polystyrene
• Curing agent for unsaturated polyester resins
• Vulcanization of tires
• Cross-linking agent in the production of polylactic acid composite fibers
• To produce polyamide/ethylene vinyl acetate copolymers
Environmental impact of DCP
Due to its toxicity to aquatic life, chemical stability, and low degradability, it can lead to contamination of water resources and soil and affect natural ecosystems. This substance may cause long-term biological hazards by accumulating in the food chain. Its entry into soil can also disrupt plant growth and reduce soil quality. For this reason, careful management of the storage, transportation, and disposal of this substance is essential to prevent environmental damage.
Safety Measures and Regulations for Handling DCP
It is a flammable substance and may cause an explosion if it comes into contact with heat sources or sparks.
It reacts violently at high temperatures (above 120 ° C) and may cause a fire.
Inhalation of its dust or vapor may cause respiratory irritation.
Store in chemical-resistant containers in a cool, dry, and well-ventilated place.
Keep away from heat, flame, and oxidizing agents.
Gloves, masks, and safety glasses are required.
Use proper ventilation in closed environments.
Packing
It is supplied in 25 kg cardboard packages.