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Hydrogen bromide

Hydrogen bromide

description
Hydrogen bromide (HBr) is a colorless, corrosive, irritating, non-flammable, toxic, spicy, pungent gas. It is filled in a cylinder as a liquefied gas under its own steam pressure.

specification
Purity , % 99.9 99.99 99.999
oxygen ≤ 10 ppmv ≤ 5.0 ppmv ≤ 1.0 ppmv
Nitrogen ≤ 20 ppmv ≤ 15 ppmv ≤ 3.0 ppmv
carbon dioxide ≤ 20 ppmv ≤ 10 ppmv  ≤ 3.0 ppmv 
Carbon monoxide ≤ 20 ppmv ≤ 0.5 ppmv ≤ 0.5 ppmv
Methane + acetylene ≤ 5 ppmv ≤ 5 ppmv ≤ 1.5 ppmv
Moisture ≤ 5 ppmv ≤ 5 ppmv ≤ 1.0 ppmv

transport
DOT shipping name Hydrogen bromide, anhydrous
DOT classification 2.3
DOT tag  Toxic gas, inhalation of harmful, corrosive gases
UN NO. UN 1048
CAS NO. 10035-10-6
CGA/DISS/JIS 330/634/W22-14L
Transportation status Liquefied gas

Technical Information
Cylinder condition @ 21.1°C  liquid
Burning limit in the air Nonflammable
Auto-ignition temperature ( °C ) -
Molecular weight ( g / mol ) 80.912
Specific gravity (air =1) 3.5
Critical temperature ( °C ) 90
Critical pressure ( psig ) 1225.69

application
- in semiconductor manufacturing: plasma polysilicon etching; 
- in chemical reactions, most often in pharmaceuticals; 
- in halogen lamps;

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