Hypobromous acid

Hypobromous acid

Hypobromous acid is a weak, unstable acid with chemical formula HOBr. It is also called bromanol or hydroxidobromine. It occurs only in solution and has chemical and physical properties that are very similar to those of hypochlorous acid.

In aqueous solution, hypobromous acid partially dissociates into the hypobromite anion BrO and the cation H+. The salts of hypobromous acid are also called hypobromites. Like the acid, these salts are unstable and when evaporated or boiled to dryness, they undergo a disproportionation reaction, yielding the respective bromate and bromide salts.

When pure bromine is added to water, it forms hypobromous acid and hydrobromic acid (HBr):

:Br2(l) + H2O(l) → HOBr(aq) + HBr (aq)

HOBr is used as a bleach, an oxidizer, a deodorant, and a disinfectant, due to its ability to kill the cells of many pathogens. The compound is generated in warm-blooded vertebrate organisms especially by eosinophils, which produce it by the action of esoinophil peroxidase, an enzyme which preferentially uses bromide. cite web |url=http://www.jbc.org/cgi/content/abstract/264/10/5660 |title=Eosinophils preferentially use bromide to generate halogenating agents -- Mayeno et al. 264 (10): 5660 -- Journal of Biological Chemistry |accessdate=2008-01-12 |format= |work=] Bromide is also used in hot tubs and spas as a germicidal agent, using the action of an oxidizing agent to generate hypobromite in a similar fashion to the peroxidase in eosinophils. It is especially effective when used in combination with its congener, hypochlorous acid.

References


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Look at other dictionaries:

  • hypobromous acid — hipobromito rūgštis statusas T sritis chemija formulė HBrO atitikmenys: angl. hypobromous acid rus. бромноватистая кислота ryšiai: sinonimas – vandenilio oksobromatas (1–) …   Chemijos terminų aiškinamasis žodynas

  • hypobromous acid — An acid, HOBr, the aqueous solution of which possesses oxidizing and bleaching properties. * * * hy·po·bro·mous ac·id (hi″po broґməs) an unstable acid, HBrO; used as a disinfectant and bleaching agent and in testing for urea …   Medical dictionary

  • hypobromous acid — | ̷ ̷ ̷ ̷|brōməs... noun Etymology: International Scientific Vocabulary hypo + bromine + ous : an unstable acid HBrO that resembles hypochlorous acid and is obtained in solution by reaction of bromine water with silver nitrate or in the form of… …   Useful english dictionary

  • hypobromous acid — noun the simplest oxyacid of bromine, HOBr; formed when bromine dissolves in water; has disinfectant properties See Also: hypobromite …   Wiktionary

  • hypobromous — adjective Of or pertaining to hypobromous acid …   Wiktionary

  • Bromous acid — Chembox new ImageFile = Bromige saeure.png ImageSize = IUPACName = hydroxy γ3 bromanone hydroxidooxidobromine bromous acid OtherNames = Section1 = Chembox Identifiers CASNo = PubChem = SMILES = Section2 = Chembox Properties Formula = HBrO2… …   Wikipedia

  • hypohalous acid — | ̷ ̷ ̷ ̷|haləs noun Etymology: hypo + hal + ous : an acid HXO derived from the halogens and including hypochlorous acid, hypobromous acid, and hypoiodous acid …   Useful english dictionary

  • Hypochlorous acid — Hypochlorous acid …   Wikipedia

  • BCDMH — IUPAC name …   Wikipedia

  • DBDMH — IUPAC name 1,3 Dibromo 5,5 dimethylhydantoin …   Wikipedia

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