Lithium bromide

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Template:Chembox E numberTemplate:Chembox SolubilityInWater
Lithium bromide
Identifiers
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Properties
LiBr
Molar mass 86.845 g/mol
Appearance White crystalline powder
Density 3.464 g/cm3, Solid
Melting point
Boiling point
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references


Overview

Lithium bromide, or LiBr, is a chemical compound of lithium and bromine. Its extreme hygroscopic character makes LiBr useful as a desiccant in certain air conditioning systems.[1]

Production and properties

LiBr is prepared by treatment of lithium carbonate with hydrobromic acid. The salt forms several crystalline hydrates, unlike the other alkali metal bromides.[2] The anhydrous salt forms cubic crystals similar to salt

Uses

Lithium bromide is used in air-conditioning systems as desiccant. Otherwise the salt is useful as a reagent in organic synthesis. For example it reversibly forms adducts with some pharmaceuticals.[1]

Medical applications

Lithium bromide was used as a sedative beginning in the early 1900s, but it fell into disfavor in the 1940s when some heart patients died after using it as a salt substitute.[3] Like lithium carbonate and lithium chloride it was used as treatment for Bipolar disorder.

Hazards

Lithium salts are psychoactive and somewhat corrosive. Dosages for lithium carbonate are ca. 200 mg/day.

References

  1. 1.0 1.1 Ulrich Wietelmann, Richard J. Bauer "Lithium and Lithium Compounds" in Ullmann's Encyclopedia of Industrial Chemistry 2005, Wiley-VCH: Weinheim.
  2. Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. ISBN 0-12-352651-5.
  3. Bipolar disorder

External links

  • "A PDF file from GFS Chemicals, a supplier of lithium bromide" (PDF). Retrieved 2005-09-15.

ar:بروميد ليثيوم bs:Litijum bromid ca:Bromur de liti de:Lithiumbromid it:Bromuro di litio



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