Factory Supply Dibenzoyl peroxide Powder CAS 94-36-0 Raw Materials

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Dibenzoyl peroxide Powder Usage and Synthesis.

Dibenzoyl peroxide Powder white crystal. Soluble in benzene, chloroform, ether. Slightly soluble in ethanol and water. It is used as initiator of monomer polymerization of polyvinyl chloride, unsaturated polyester, polyacrylate, etc. It can also be used as cross-linking agent of polyethylene, and as vulcanizing agent of rubber.

• 1.Dibenzoyl peroxide Powder is white crystalline powder; with special odor.
• 2.Dibenzoyl peroxide Raw Materials  is easily soluble in acetone or trichloromethane, slightly soluble in methanol or ethanol, and very slightly soluble in water.

Application/Function of Dibenzoyl peroxide Powder

1. Dibenzoyl peroxide Powder can be used as initiator, crosslinker, vulcanizer, bleaching agent and oxidizer. It is particularly noted that the addition of dibenzoyl peroxide (which has a whitening effect on flour) in the production of flour has been prohibited in China since February 11, 2011, and the manufacture and sale of dibenzoyl peroxide is prohibited.
2. Dibenzoyl peroxide Powder is used as initiator of monomer polymerization of polyvinyl chloride, unsaturated polyester, polyacrylate, etc. It can also be used as cross-linking agent of polyethylene, and as vulcanizing agent of rubber.
3. Dibenzoyl peroxide Raw Materials is used as analytical reagent, oxidizer, bleaching agent and plastic polymerization initiator.
4. Dibenzoyl peroxide CAS 94-36-0 used as curing agent for unsaturated polyester resin
5. Dibenzoyl peroxide CAS 94-36-0 Japan produced benzoyl peroxide products, in addition to the 98.0% purity powder type, there are a variety of commercial specifications, such as paste type (50% of the product and 50% of plasticizer), liquid type (75% of the product and 25% of water), flour maturation bleaching type (19% to 22% of the product with alum, calcium phosphate, calcium sulfate, calcium carbonate, carbonic acid or flour), Calcium carbonate, carbonic acid or flour dilution of one or two or more). The powder type is mainly used as a polymerization initiator for acrylic resins and MMA resins. In recent years, it is being promoted as a fast binder for highway engineering and other applications, and the paste type is used as a curing catalyst for polyester resin molding process. The liquid type is used as a polymerization catalyst for the preparation of polystyrene resins. It is a strong oxidizing agent, sensitive to impact and friction, and has a high risk of explosion, so contact with metal powder, activated carbon and reducing agents should be avoided. Storage must be water as a stabilizer, water content of 30%, storage temperature of 30 ℃ or less. Zhengzhou Food Additive Factory had an explosion on June 26, 1993, killing 27 people and injuring 33 others. This product is toxic and can cause inflammation of skin and mucous membranes. Oral LD50 in mice is 3.949mg/kg.
6. Dibenzoyl peroxide Powder wheat flour whitening agent; oxidizer; bleaching agent.
7. Dibenzoyl peroxide Powder is mainly used as polymerization initiator of PVC, polyacrylonitrile and cross-linking agent of unsaturated polyester and acrylate. It is used as cross-linking agent of silicone rubber and fluorine rubber in rubber industry. It can also be used as bleaching agent and oxidizing agent in chemical production.
8. Dibenzoyl peroxide Raw Materials as a flour quality improver, with bactericidal effect and strong oxidizing effect, can make the flour bleaching. China's regulations only for wheat flour, the maximum use 0.06g/kg.
9. Dibenzoyl peroxide Raw Materials Benzoyl peroxide is the most widely used initiator in the adhesive industry, used as acrylate, vinyl acetate solvent polymerization, neoprene, natural rubber, SBS and methyl methacrylate graft polymerization. Unsaturated polyester resin curing, organic glass adhesives and other initiators. It can also be used as vulcanizing agent and cross-linking agent for silicone rubber and fluorine rubber. It can also be used as bleaching agent and oxidizing agent.
10. Dibenzoyl peroxide CAS 94-36-0 check formaldehyde and cholesterol. Characterization of aromatic amines. Preparation of embedding media for electron microscopy. Oxidizing agent. Plastic polymerization catalyst. Curing agents, cross-linking agents. Bleaching agents for fats, oils and waxes.

Property and Stability of Dibenzoyl peroxide Powder

• Dibenzoyl peroxide CAS 94-36-0 has a common name, some of you may be more familiar with the name of initiator BPO. Anyway, it is this. It has the appearance of white crystal powder and smells slightly of bitter almond. Chemical properties are very unstable, easy to burn, encounter high temperature, bright, friction, collision, sulfur and reducing agent, etc., may cause fire and explosion accidents.The content of 98% or more is white crystal, 50% is paste. Soluble in benzene, chloroform, ether, acetone, carbon disulfide, slightly soluble in water and methanol. Theoretical active oxygen content 6. 62%. Activation energy 125.6kj]mol. half-life of 10h at 72-73°C. Flammable in dry state, explosive decomposition can be caused by heat, friction, vibration or contamination by impurities. Explosion can occur when heated sharply. It reacts violently with strong acid, strong base, sulfide, reducing agent, polyurethane, and co-catalyst and accelerator such as dimethyl aniline, amine, amine or metal naphthenate.
• Dibenzoyl peroxide CAS 94-36-0 is a strong oxidizing agent, can be used to bleach organic matter, such as flour, vegetable oils and fats, but has a strong destructive effect on β-carotene, vitamin A, vitamin E and vitamin B1 in flour, the maximum use amount is 0.25-0.3g/kg of flour; easily decomposed into free radicals by heat to 70-90℃. Dibenzoyl peroxide Raw Materials can decompose rapidly when heated to about 100℃, and can cause explosion in sealed containers, so it should be treated as dangerous goods. Benzoyl peroxide is sensitive to impact and friction and has a high risk of explosion. Contact with metallic powders, activated carbon and reducing agents should be avoided, and the safety items on the container label should be observed. To prevent the danger of fire and explosion, it is usually diluted to about 20% with 3 or more substances such as calcium carbonate, calcium phosphate, calcium sulfate, magnesium carbonate, alum and starch (diluted benzoyl peroxide). The above information is edited and compiled by Yoyo of
• Dibenzoyl peroxide Raw Materials also known as peroxydibenzoyl, benzoyl peroxide, Acetoxyl, Acnegel, Benoxyl, Lucidol, Nericur, Xerac, BP5. white rhombohedral crystal system crystalline or crystalline powder. Slight benzaldehyde odor. Has a bitter kernel taste. Relative molecular mass 242.23. Relative density 1.3440(25℃). Melting point 103～106℃(decomposition and, explosion). Refractive index 1.545. flash point 125℃. Strong oxidizer, easy to burn, easy to explode. Very slightly soluble in water, slightly soluble in methanol, isopropanol, soluble in ethanol (1.2g/100g), acetone (18.5g/100g), chloroform (26.8g/100g), ethyl acetate (14.4g/100g), benzene (18.6g/100g), ether (8.6g/100g). The half-lives in solution were 2.1h (85°C), 10h (72°C).
• Dibenzoyl peroxide Powder decomposes slowly in alkaline solution.
• Dibenzoyl peroxide CAS 94-36-0 is stable at room temperature and is easily exploded by friction, impact or heating in a dry state. It can be burned by adding sulfuric acid.

Because it is a strong oxidizer, it can cause skin and mucous membrane inflammation. Oral LD503949mg/kg in mice. Preparation: Benzoyl chloride is used as raw material and reacted with sodium peroxide (or hydrogen peroxide and sodium hydroxide) to obtain benzoyl peroxide crude product, then refined by recrystallization in benzene or acetone. Then add 50% of sodium hydroxide solution first, then add hydrogen peroxide, and finally add benzoyl chloride slowly at 0-10℃, the order should not be reversed.

Production method of Dibenzoyl peroxide Powder

Cool the 30% caustic soda solution to 10℃ with stirring, and add 30% hydrogen peroxide dropwise. After the dibenzoyl peroxide is added, the temperature of the material is lowered to about O℃, then benzoyl chloride is added dropwise, and then the benzoyl peroxide in the lower layer is stratified and dried at low temperature, and the water content of the finished product is kept at 25%-30% for storage.

1. Dibenzoyl peroxide powder production method add 30% hydrogen peroxide to 30% sodium hydroxide solution under cooling condition to produce sodium peroxide solution; then add benzoyl chloride dropwise with stirring at 0-10℃, too high temperature will cause hydrogen peroxide decomposition and benzoyl chloride hydrolysis; precipitate the benzoyl peroxide generated by the reaction, after cooling, filtering, washing, and then use 2:1 methanol/ methanol/ methanol/ methanol to produce benzoyl peroxide. And recrystallize with 2:1 methanol/chloroform, dry (50～70℃) to get the product, the yield is more than 85%. 2NaOH→H2O2+2H2ONa2O2+2C6H5COCl→C6H5COOOOC6H5+2NaCl
2. Dibenzoyl peroxide CAS 94-36-0 Production method: React hydrogen peroxide with 30% liquid alkali to produce sodium peroxide solution, and then react with benzoyl chloride to obtain. The reaction is carried out at about 0°C. Too high a temperature will cause the decomposition of hydrogen peroxide, and benzoyl chloride will be easily hydrolyzed to produce benzoic acid and affect the yield. The benzoyl peroxide precipitated from the product will be filtered, washed and dried to obtain the finished product. The peroxybenzoyl content of industrial products can reach 99% (secondary products), melting point 102-106℃ Raw material consumption quota: benzoyl chloride (more than 95%) 1000kg/t, hydrogen peroxide (30%) 800kg/t. When purification is needed, alcohols, acetone, benzene and other suitable solvents can be used for recrystallization.
3. Dibenzoyl peroxide Raw Materials production method makes hydrogen peroxide react with 30% liquid alkali to produce sodium peroxide solution, and then react with benzoyl chloride to obtain. The reaction is carried out at about 0°C. Too high a temperature will cause the decomposition of hydrogen peroxide, and benzoyl chloride will also be easily decomposed to produce benzoic acid and affect the yield. Benzoyl peroxide will be filtered, washed and dried to obtain the finished product. The content of benzoyl peroxide in industrial products can reach 99% (secondary products), and the melting point is 102~106℃. When purification is needed, alcohols, acetone, benzene and other suitable solvents can be used for recrystallization.

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