Hydrogen Bromide


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

hydrogen bromide

[′hī·drə·jən ′brō‚mīd]
(inorganic chemistry)
HBr A hazardous, toxic gas used as a chemical intermediate and as an alkylation catalyst; forms hydrobromic acid in aqueous solution.

Hydrogen Bromide

 

(HBr), a compound of hydrogen and bromine. It is a colorless gas with a sharp odor and acidic taste; Tb = -68.7° C, Tm = -87.9° C. At 10° C approximately 350 volumes of hydrogen bromide dissolves in 1 volume of water. An aqueous solution of hydrogen bromide is called hydrobromic acid. This is a colorless liquid (sometimes yellowish owing to the presence of traces of bromine) with a sharp odor. An azeotropic mixture with a boiling point of 124.3° C forms at a concentration of 47.6 percent HBr.

Hydrobromic acid is one of the strongest mineral acids. In industry hydrogen bromide is obtained by the reaction of bromine vapors with hydrogen at a high temperature. The reaction temperature can be reduced by using a catalyst, activated charcoal, or platinized asbestos. Hydrogen bromide can be obtained in the laboratory by treating bromides with 50-percent sulfuric acid (more concentrated acid partially oxidizes HBr to Br2) and by other methods. Hydrogen bromide is used to obtain bromides and organic bromine derivatives and for other purposes.

References in periodicals archive ?
5 2011-2016 Chinese Import and Export of Hydrogen Bromide
Chapter Five Market Status of Hydrogen Bromide Industry
1 Market Competition of Hydrogen Bromide Industry by Company
3 Market Analysis of Hydrogen Bromide Consumption by Application/Type
Chapter Six 2016-2021 Market Forecast of Global and Chinese Hydrogen Bromide Industry
1 2016-2021 Global and Chinese Capacity, Production, and Production Value of Hydrogen Bromide
2 2016-2021 Hydrogen Bromide Industry Cost and Profit Estimation
3 2016-2021 Global and Chinese Market Share of Hydrogen Bromide
4 2016-2021 Global and Chinese Supply and Consumption of Hydrogen Bromide
5 2016-2021 Chinese Import and Export of Hydrogen Bromide
Chapter Seven Analysis of Hydrogen Bromide Industry Chain