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Yancheng Sanhe Biochemical Co., Ltd.

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1,3-Dibromopropane

Product name 1,3-Dibromopropane
English alias 1,3-propanedibromide;
Structural formula
Molecular formula C3H6Br2
Molecular weight 201.88800
Appearance Transparent liquid
Melting point −34 ℃(lit.) 
Relative density 1.989 g/mL at 25℃(lit.) 
Boiling point 167℃(lit.)
Water solubility 1.7 g/L (30℃)
Refractivity n20/D 1.524(lit.)
Content ≥99.0%
Moisture ≤0.05%
Stability Stable. Incompatible with strong oxidizing agents, strong bases. Flammable.
Flash point 54 ℃
Vapor pressure 0.55mmHg at 25°C
Storage The storage room is ventilated and dry and stored separately with food, oxidants and acids.
Use Organic synthetic intermediates.
Production method The product was prepared by the reaction of propanediol with bromohydrogen acid. Concentrated sulfuric acid and 1,3-Propanediol were added to the bromohydrogen acid, then slowly dripped into concentrated sulfuric acid, then refluxed in the sand bath for 7 hours, then the coarse product was steamed out and washed with water once. 10% sodium thiosulfate solution was used to wash 10% sodium carbonate twice for 2-3 times, then the water layer was removed and dried with anhydrous calcium chloride. The product was obtained by constant pressure fractionation and collection of 159-168 ℃ fractions.
UN No. UN 1993 3/PG 3
Hazard class 3
Packing group III
HS code 2903399090
Packing 250KGS/steel drum
CAS # 109-64-8

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