974. Barium Fluoride

Nomenclature

CAS number: 7787-32-8
BaF2; mol wt 175.32.
Ba 78.33%, F 21.67%.

Description and references

Prepd by dissolving BaCO3 in excess HF, evaporating to dryness, and heating to red heat: W. Olbrich, Thesis (Technische Hochschule, Breslau, 1929), p 2; Kwasnik in Handbook of Preparative Inorganic Chemistry vol. 1, G. Brauer, Ed., (Academic Press, New York, 2nd ed., 1963) p 234.

Properties

Transparent cubic crystals (fluorite lattice). Poisonous. d 4.83. mp 1353°. bp 2260°. Soly in water (g/l): 1.586 (10°); 1.607 (20°); 1.620 (30°). Also sol in hydrochloric, nitric, hydrofluoric acids and in aq solns of ammonium chloride. May be stored in glass bottles.

Use

As a flux and opacifier in vitreous enamels; in the manuf of carbon brushes for DC motors and generators; in heat-treating metals; in embalming; in glass manuf.