Title: Barium Fluoride

CAS Registry Number: 7787-32-8

Molecular Formula: BaF2

Molecular Weight: 175.32

Percent Composition: Ba 78.33%, F 21.67%

Literature 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.

Melting point: mp 1353°

Boiling point: bp 2260°

Density: d 4.83

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.