1. OSHA Occupational Chemical Database
  2. HYDROGEN BROMIDE
Label abbreviations descriptions

HYDROGEN BROMIDE†

Chemical Identification
Chemical Identification
CAS # 10035-10-6
Formula
 

HBr
Synonyms
 

anhydrous hydrogen bromide; aqueous hydrogen bromide (hydrobromic acid)
Physical Properties
Physical Properties
Physical description Colorless gas with a sharp, irritating odor.
Boiling point -88.2°F Molecular weight 80.92
Freezing point/melting point -124°F Vapor pressure 20 atm
Flash point Vapor density 2.81
Specific gravity 2.14 at -88.6°F Ionization potential 11.62 eV
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating NFPA fire rating
NFPA reactivity rating NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs
Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 1420
Sampling group
Sampler/Sampling media ORBO™ 53 activated silica gel tube [Supelco 20265]
Sampling time*
 

 
Sampling volume (TWA)*
 

96 L
Sampling flow rate (TWA)*
 

0.2 L/min
Sampling volume (STEL/Peak/C)*
 

2.5 L
Sampling flow rate (STEL/Peak/C)*
 

0.5 L/min
Analytical method instruments IC
Method reference OSHA ID-165SG (partially validated)
Notes
 

Submit as a separate sample, however, hydrogen chloride can be analyzed from the same sample. The sample is analyzed for bromide (or chloride, if requested) and the result reported as the acid. Make sure that the glass fiber filter plug is firmly in contact with the silica gel before and after sampling. Report the presence of bromide (or chloride) salts to the analytical laboratory.
Special requirements
 

 

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Wipe Method
Wipe Method
Sampler/Sampling media
 

 
Bulk Method
Bulk Method
 

 
On-Site Screening Techniques
On-Site Screening Techniques
Device Detector tube
Model/Type Gastec 15L
Sampling information
(see manufacturer instructions) 		0.5-10 strokes, 0.04-16 ppm range, uncertainty 25% for 0.8-4 ppm, 16% for 4-16 ppm
Exposure Limits
Exposure Limits
OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA
 

3 ppm (10 mg/m³)

 REL-TWA
 

 

 TLV-TWA
 

 

 PEL-TWA
 

 
PEL-STEL
 

 

 REL-STEL
 

 

 TLV-STEL
 

 

 PEL-STEL
 

 
PEL-C
 

 

 REL-C
 

3 ppm (10 mg/m³)

 TLV-C
 

2 ppm [2001]

 PEL-C
 

3 ppm (10 mg/m³)
Skin notation
 

N

 Skin notation
 

N

 Skin notation
 

N

 Skin notation
 

N
Notes:
 

See 29 CFR 1910.1000 Table Z-1.

 Notes:
 

 

 Notes:
 

 

 Notes:
 

 
Health factors:  See NIH-NLM PubChem. IDLH
 

30 ppm
Carcinogenic classifications: Not listed Notes:
 

 
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
 

 
Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Hydrogen bromide, anhydrous

NIOSH: Pocket Guide to Chemical Hazards - Hydrogen bromide

Literature References

 
  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Hydrogen bromide. See annual publication for most recent information.
  • Burns, M.J. and Linden, C.H.: Another hot tub hazard: toxicity secondary to bromine and hydrobromic acid exposure. Chest 111(3): 816-819, 1997.
  • Kraut, A. and Lilis, R.: Chemical pneumonitis due to exposure to bromine compounds. Chest 94(1): 208-210, 1988.
  • Orlando, J.P., de Haro, L., Jouglard, J. and Leroyer, S.: Reactive airway dysfunction syndrome and bronchiolitis obliterans after exposure to acid vapors [French]. Rev. Pneumol. Clin. 53(6): 339-342, 1997.
  • Pohanish, R.P. (editor): Hydrogen Bromide. In, Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 1. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 1274-1276.

Last Updated Date : 12/31/2020