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1-Bromooctadecane

Product name 1-Bromooctadecane
English alias Octadecyl bromide;
Structural formula
Molecular formula C18H37Br
Molecular weight 333.39000
Appearance White low melting point crystals
Melting point 25-30 ℃(lit.)
Relative density 0.976 g/mL at 25 ℃(lit.)
Boiling point 214-216 ℃12 mm Hg(lit.)
Water solubility Insoluble
Refractivity 1.462-1.464
Content ≥98.0%
Moisture ≤0.05%
Stability Stable under normal temperatures and pressures.
Flash point >230 °F
Vapor pressure 2.4E-05mmHg at 25℃
Storage The warehouse is ventilated and dried at low temperature, and stored separately from oxidants and food additives.
Use Surfactants. This product can be used for the synthesis of drugs and other fine chemicals.
Production method It is obtained by reacting octadecanol with hydrogen bromide. Heat the alcohol to 100 ℃, introduce dry hydrogen bromide, and maintain the reaction temperature at 100-120 ℃ until the solution no longer absorbs hydrogen bromide. Bromide layering, take organic phase and wash with concentrated sulfuric acid. After separating the acid solution, mix the bromide with an equal volume of 90% methanol. Wash with ammonia water to make the bromide alkaline, then wash with 90% methanol and dry with anhydrous calcium chloride. Finally, by vacuum distillation, the finished product is obtained by collecting the fraction at temperatures ranging from 209 to 211 ℃ (1.33 kPa), with a yield of 90%.
UN No.  
Hazard class  
Packing group  
HS code 2903399090
Packing 200KGS/Closed steel drum
CAS # 112-89-0

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