Lithium chloride

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White Hygroscopic crystals. Lithium chloride is one of the most hygroscopic salts known. In a closed environment, a saturated solution of lithium chloride will form an equilibrium at a relative humidity of about 12.4% (20C). Lithium chloride salts are also used in pyrotechnics to produce red colors, as a Desiccant, as a soldering Flux, and as a carbon dioxide stabilizer in carbonate drinks.

Synonyms and Related Terms

lithium salt of hydrochloric acid


Ingestion of excess amounts may cause an electrolyte imbalance and impaired renal function. Noncombustible. Skin and eye contact may cause irritation.

ThermoFisher: SDS

Physical and Chemical Properties

Soluble in water, ethanol, acetone, amyl alcohol and pyridine.

Deliquescent point at 20C is 12.4 % RH (see saturated salt solutions)

Composition LiCl
CAS 7447-41-8
Melting Point 613
Density 2.07
Molecular Weight mol. wt. = 42.4
Refractive Index 1.662
Boiling Point 1307

Resources and Citations

  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983
  • CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: ref. index=1.662