Nomenclature
CAS number: 7789-19-7
CuF
2; mol wt 101.54.
Cu 62.58%, F 37.42%.
Description and 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.Derivative
Dihydrate.
Properties
Blue monoclinic crystals. Dec above 130°. d425 2.934. Slightly sol in cold water, hydrolyzed to oxyfluoride in hot
water.Use
Anhydr in cathodes in nonaq galvanic cells; high
temperature fluorinating agent; dihydrate as flux in casting gray
iron.