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18735 Sigma-Aldrich

Hydrobromic acid solution

33 wt. % in acetic acid

Synonym: Hydrogen bromide in acetic acid

  • Empirical Formula (Hill Notation) HBr

  • Molecular Weight 80.91

  •  Beilstein Registry Number 3587158

  •  MDL number MFCD00011323

  •  PubChem Substance ID 24851269



Related Categories Acids, Acids & Bases, Chemical Synthesis, Inorganic Acids, Synthetic Reagents More...
assay   31.5-34.5% (T)
concentration   33 wt. % in acetic acid
impurities   ≤1% water (KFT)
density   1.40 g/mL at 20 °C


Other Notes

A -D suffix exists for administrative purposes only.
All -D packages are 100% the same product, same quality, same specification as the package sizes previously sold without a -D.


1 L in glass bottle

50, 250 mL in glass bottle

Price and Availability

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Safety & Documentation

Safety Information

Signal word 
Hazard statements 
UN 3265 8 / PGII
WGK Germany 
Flash Point(F) 
>149 °F
Flash Point(C) 
>65 °C

Protocols & Articles

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Peer-Reviewed Papers


Set your institution to view full text papers.

Improved infrared spectroscopic method for the analysis of degree of N-deacetylation of chitosan. Sabnis S and Block LH. Polym. Bull. 39(1), 67-71, (1997)

Study of chemical reaction mechanisms with molecular beams. The reaction of K with HBr. Taylor EH and Datz S. J. Chem. Phys. 23(9), 1711-1718, (1955)

Carbonic anhydrase inhibitors. Inhibition studies with anions and sulfonamides of a new cytosolic enzyme from the scleractinian coral Stylophora pistillata. Anthony Bertucci et al Bioorg. Med. Chem. Lett. 21, 710-4, (2011)


Merck 14,4778 / Merck 14,4793

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