Bronopol powder Raw Materials CAS 52-51-7

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Product details

Uses and synthesis of Bronopol powder

Bronopol powder is 2-bromo-2-nitro-1,3-propanediol, other names are bromonitol, bacteriostat, etc. Bronopol CAS 52-51-7 is white crystalline powder, melting point: 122-130°C. Bronopol CAS 52-51-7 is white crystalline powder, melting point: 122～130℃, Bronopol Raw Materials very soluble in water, ethanol, propylene glycol, ethyl acetate, etc., slightly soluble in oil, insoluble in chloroform, acetone, etc..

Applications / Functions of Bronopol powder

• Bronopol powder can effectively control a variety of plant pathogenic bacteria.
• Bronopol CAS 52-51-7 is mainly used in cosmetics, leather antiseptic, and in agriculture, it is mainly used in the control of rice seedling disease.
• Bronopol powder is mainly used in industrial circulating water, paper and pulp, paint, plastics, cosmetics, wood, cooling water circulating system, as well as industrial bactericidal, anti-mould, anti-corrosion, algaecide.
• Bronopol Raw Materials are widely used in water treatment, medicine, pesticide, cosmetics, detergent and other industries as antiseptic and sterilant.

Physicochemical Property of Bronopol powder

Bronopol CAS 52-51-7 is colourless or yellow-brown crystal, m.p.130℃, vapour pressure 1.68×10-3Pa, soluble in acetone, 2-methoxyethanol, toluene and other organic solvents, solubility in water at 22℃ is 250g/L. The purity of the industrial product is higher than 90%, and it has slight hygroscopicity.

Production methodprocess of Bronopol powder

Add nitromethane, 30% formaldehyde, calcium chloride and sodium hydroxide into the reaction device according to the molar ratio of 1:2:2:2, stir, and add the solution made of bromine and dichloroethane dropwise under 0℃. The addition was completed in 1h, and the amount of bromine was equimolar to nitromethane. The dichloroethane layer was separated and the dichloroethane was evaporated. Bronopol powder (crude) was obtained.

The aqueous layer of the reaction product was extracted with ether, and the ether in the ether extract was evaporated to obtain another part of the crude product. The crude products were combined and recrystallised with ether to obtain Bronopol Raw Materials.

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