Title: Cupric Fluoride
CAS Registry Number: 7789-19-7
Molecular Formula: CuF2
Molecular Weight: 101.54
Percent Composition: Cu 62.58%, F 37.42%
Literature References: Prepd by fluorinating Cu or a Cu salt with F2: von Wartenberg, Z. Anorg. Allg. Chem. 241, 381 (1939); Jache, Cady, J. Phys. Chem. 56, 1106 (1952); Haendler et al., J. Am. Chem. Soc. 76, 2178 (1954); Ritter, Smith, J. Phys. Chem. 70, 805 (1966); 71, 2036 (1971).
Properties: Monoclinic crystals; turns blue in moist air due to formation of dihydrate. mp ~785° (N2 atm), 950° (HF atm); d 4.85. Soly in water (20°) 4.7 g/100 ml; hydrolyzed to CuFOH in hot water. May be stored in sealed glass ampuls.
Melting point: mp ~785° (N2 atm), 950° (HF atm)
Density: d 4.85
Derivative Type: Dihydrate
Properties: Blue monoclinic crystals. Dec above 130°. d425 2.934. Slightly sol in cold water, hydrolyzed to oxyfluoride in hot water.
Density: d425 2.934
Use: Anhydr in cathodes in nonaq galvanic cells; high temperature fluorinating agent; dihydrate as flux in casting gray iron. |