Manganese Difluoride
Title: Manganese Difluoride
CAS Registry Number: 7782-64-1
Additional Names: Manganous fluoride; manganese fluoride
Molecular Formula: F2Mn
Molecular Weight: 92.93
Percent Composition: F 40.89%, Mn 59.12%
Line Formula: MnF2
Literature References: Prepd from manganese carbonate and hydrogen fluoride: Moissan, Venturi, Compt. Rend. 130, 1158 (1900); Kwasnik in Handbook of Preparative Inorganic Chemistry Vol. 1, G. Brauer, Ed. (Academic Press, New York, 2nd ed., 1963) pp 262-263. Review of toxicology of fluoride compounds: G. L Waldbott, Acta Med. Scand. Suppl. 400, 1-44 (1963).
Properties: Pink, quadratic prisms (tetragonal structure, rutile type) or reddish powder. Poisonous! d 3.98. mp 856°. Soly in water (g/100 ml): 0.66 (40°); 0.44 (60°); 0.48 (100°). Insol in alc. Sol in dil hydrofluoric acid, concd hydrochloric or nitric acid. LD in guinea pigs (mg/kg): 200 orally, 700 s.c. (Waldbott).
Melting point: mp 856°
Toxicity data: LD in guinea pigs (mg/kg): 200 orally, 700 s.c. (Waldbott)
 
Derivative Type: Tetrahydrate
Properties: Obtained by dissolving manganese carbonate in hydrofluoric acid, evaporating, and drying in vacuo.

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