[Chemical Knowledge]：The nature, use, upstream and downstream raw materials, storage methods of tert-butyl peroxide benzoate, is tert-butyl peroxide benzoate toxic?

Properties of tert-butyl peroxybenzoate

Tertiary butyl peroxybenzoate (Tert-Butyl Peroxybenzoate,TBPB) is an organic peroxide with the formula C11H14O3. It usually exists as a colorless to pale yellow liquid with a characteristic odor. It has a low melting point and is usually liquid at room temperature. TBPB has a low decomposition temperature and begins to decompose above 100°C to generate free radicals, so it needs careful handling and storage. Its decomposition products include benzoic acid and tert-butyl alcohol, which are not inherently hazardous, but the decomposition of peroxides at high temperatures or under open flame conditions may pose an explosion risk.

Application of tert-butyl peroxybenzoate

Tert-butyl peroxybenzoate is mainly used as a polymerization initiator in the chemical industry. TBPB is widely used in the polymerization of ethylene, propylene, styrene and other monomers due to its ability to decompose to generate free radicals at relatively low temperatures. TBPB is also used as a curing agent for unsaturated polyester resins and has important applications in the resin manufacturing and composite materials industries. It can also be used in processes such as rubber vulcanization and plastic crosslinking to improve the mechanical properties and heat resistance of the product.

Upstream raw material of tert-butyl peroxybenzoate

The main raw materials for the production of tert-butyl peroxybenzoate include tert-butyl alcohol and benzoyl chloride. Tert-butyl alcohol (Tert-Butanol,TBA) is an important organic chemical raw material, which is usually prepared by the hydration of isobutene or the oxidation of isobutane. Benzoyl chloride (Benzoyl Chloride) is prepared by the reaction of benzoic acid with phosgene or phosphorus pentachloride. The two react under specific conditions to produce tert-butyl peroxybenzoate. Hydrogen peroxide is also an important reaction participant for oxidation to form the final product.

tert-Butyl Peroxybenzoate Downstream Products

The downstream products of tert-butyl peroxide benzoate are mainly concentrated in the plastics, rubber and resin industries. It is used as an initiator in the production of various polymers, such as polyethylene, polypropylene and polystyrene. These polymers have a wide range of applications in the packaging, construction, automotive and other industries. TBPB is used as a curing agent in the production of unsaturated polyester resins, which are widely used in glass fiber reinforced plastics, coatings and adhesives. TBPB is also used in rubber vulcanization to improve the elasticity and durability of rubber products.

Storage method of tert-butyl peroxybenzoate

Because tert-butyl peroxybenzoate is an organic peroxide, it has certain heat sensitivity and explosiveness, so its storage needs special attention. TBPB should be stored in a cool, dry, well-ventilated place, away from fire and heat sources. The storage temperature should be controlled below 30 ℃ to prevent decomposition. Use opaque containers for storage to reduce the effect of light on its stability. The storage container should be well sealed to prevent contact with moisture in the air to avoid unnecessary chemical reactions.

Safety and environmental impact

As an organic peroxide, t-butyl peroxybenzoate is dangerous mainly in its decomposition products and the energy released in the decomposition process. TBPB is irritating and has a corrosive effect on the skin and eyes, and inhalation of its vapor may cause respiratory discomfort. Therefore, it is necessary to wear appropriate protective equipment, such as gloves and goggles, during use and handling. For the environment, the toxicity of TBPB and its decomposition products is relatively low, but large-scale leakage may cause pollution to water bodies and soil. Therefore, strict compliance with relevant safety and environmental regulations is required to ensure its safe use and disposal.

Market Prospects of tert-Butyl Peroxybenzoate

As the plastics and rubber industry continues to grow, the demand for tert-butyl peroxybenzoate is expected to grow steadily. Especially in the field of high-performance composite materials and engineering plastics, TBPB as a key initiator and curing agent, its market demand will be further expanded. With the increasing awareness of environmental protection, the application prospect of tert-butyl peroxybenzoate in green chemistry and sustainable material production is also very broad. In the future, with the improvement of technology and production process, the production cost of TBPB is expected to be further reduced, so as to improve its market competitiveness.

Conclusion

As an important organic peroxide, tert-butyl peroxybenzoate is widely used in polymer, resin and rubber industries because of its excellent initiation and curing properties. Its production involves a variety of chemical raw materials and reaction processes, and requires high storage and processing conditions. Driven by market demand and technological progress, TBPB has broad application prospects. Ensuring its safe use and environmentally friendly disposal is still an important issue for the development of the industry.