Lithium Hydroxide
Title: Lithium Hydroxide
CAS Registry Number: 1310-65-2
Additional Names: Lithium hydrate
Molecular Formula: HLiO
Molecular Weight: 23.95
Percent Composition: H 4.21%, Li 28.98%, O 66.80%
Line Formula: LiOH
Literature References: Prepn: Barnes, J. Chem. Soc. 1931, 2605; Cohen, Inorg. Synth. 5, 3 (1957); Bravo, ibid. 7, 1 (1963). Review of prepn, properties and uses: Oliver in Mellor's vol. II, supplement II, The Alkali Metals (part 1) 159-171 (1961).
Properties: Granular, free-flowing powder; acrid, strongly alkaline. Readily absorbs CO2 and water from air. d 2.54. mp 471°. Sol in water, slightly sol in alcohol. Keep tightly closed.
Melting point: mp 471°
Density: d 2.54
 
Derivative Type: Monohydrate
Properties: Small monoclinic crystals. d420 1.51. Heat of formation -188.9 kcal/mol at 25°. Heat of soln -0.87 kcal/mol at 25°. Soly in water (w/w) at 0°: 10.7%; at 20°: 10.9%; at 100°: 14.8%. Slightly sol in alcohol. pH of a 1.0N soln about 14.
Density: d420 1.51
 
CAUTION: Strongly alkaline and hence caustic. Very irritating to skin. Systemic toxicity similar to other lithium compds. See Lithium.
Use: In photographic developers; in alkaline storage batteries; in prepn of other lithium salts where use of carbonate is not practical; as catalyst in the production of alkyd resins, in esterifications; in the production of lithium soaps, sulfonates, greases.

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