Yancheng Sanhe Biochemical Co., Ltd.--1-Bromopropane|106-94-5

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Sanhe Biochemical

1-Bromopropane

Product name	1-Bromopropane
English alias	n-Propyl bromide; NPB;
Structural formula
Molecular formula	C₃H₇Br
Molecular weight	122.9917
Appearance	Colorless Transparent Liquid
Melting point	-110℃
Relative density	1.354 g/mL at 25 ℃(lit.)
Boiling point	71℃
Water solubility	2.5 g/L (20 ºC)
Refractivity	n20/D 1.434(lit.)
Content	≥99.5%
Moisture	≤0.05%
Stability	Stability Flammable - note low flash point. Incompatible with strong oxidizing agents, strong bases.
Flash point	72 °F
Vapor pressure	133mmHg at 25℃
Storage	The warehouse is ventilated and dried at low temperature, and stored separately from oxidants and food additives.
Use	Organic extractants and cleaning agents are also used in the synthesis of pharmaceuticals, pesticides, dyes, spices, etc.
Production method	Add hydrobromic acid to concentrated sulfuric acid, then add n-propanol, heat and reflux for 0.5 hours. Steam out all the generated bromopropane at 70-75 ℃, wash with concentrated hydrochloric acid, and then neutralize with sodium carbonate to a pH of 7. Dry with anhydrous sodium sulfate, filter, distill the filtrate, collect the 69-74 ℃ fraction to obtain bromopropane. It is obtained by reacting n-propanol with sodium bromide. Heat n-propanol, water, and sodium bromide together until refluxed, maintain 69-72 ℃, add sulfuric acid dropwise, add it, and continue refluxing for 2 hours. Distillation, collect the distillate at 68-100 ℃, wash with sodium carbonate solution to neutral, and then distill to collect the distillate at 68-76 ℃, namely bromopropane. In addition, in the presence of red phosphorus, n-propanol can also react with bromine to prepare bromopropane.
UN No.	UN 2344 3/PG 2
Hazard class	3
Packing group	II
HS code	2903399090
Packing	250KGS/Closed steel drum
CAS #	106-94-5

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