Nomenclature
CAS number: 7788-97-8
CrF
3; mol wt 108.99.
Cr 47.71%, F 52.29%.
Description and references
Prepd by heating CrCl3 in a current
of HF: Kwasnik in Handbook of Preparative
Inorganic Chemistry vol. 1, G. Brauer, Ed.
(Academic Press, New York, 2nd ed., 1963) p. 257. Review of chromium
halides: Fergusson in Halogen Chemistry vol. 3, V. Gutmann, Ed. (Academic Press, New York, 1967)
pp 227-302.
Properties
Dark green needles, d 3.8. mp 1100°. Sublimes at 1100-1200°. Corrosive. Practically insol in water, alcohol. Sol
in HCl with violet color.Derivative
Trihydrate.
Nomenclature
Triaquochromium trifluoride. Description and references
Discussion of other hydrates or Werner complexes:
ACS Monograph Series no.
132, entitled “Chromium,” vol. 1, M. J. Udy, Ed. (Reinhold,
New York, 1956) p 183.
Properties
Green crystals from solns of Cr or Cr(OH)3 in hydrofluoric acid. Sparingly sol in water.Use
The hydrates in printing and dyeing woolens; coloring
and hardening marble; mothproofing woolen fabrics; treating silk;
polishing metals; halogenation catalyst.