Nomenclature
CAS number: 7783-40-6
Sellaite.
F
2Mg; mol wt 62.30.
F 60.99%, Mg 39.01%.
MgF
2.
Description and references
Prepd from MgCO3 + HF: Klemm et al., Z. Anorg. Allg. Chem. 176, 13 (1928). Review of toxicology of fluoride compounds:
G. L. Waldbott, Acta Med. Scand. Suppl. 400, 1-44 (1963).
Properties
Colorless substance (rutile-type lattice). Slight
violet fluorescence. d 3.148. Mohs' hardness: 6. mp 1248°. bp 2260°. Very sparingly sol in water 87 mg/l (18°). Slightly sol
in dil acids, especially nitric acid. May be stored in glass bottles.
LD in guinea pigs (mg/kg): 1000 orally, 3000 s.c. (Waldbott).Use
In the ceramics and glass industry.