Nomenclature
CAS number: 1306-23-6
C.I. 77199; Capsebon (Pitman-Moore).
CdS; mol wt 144.48.
Cd 77.80%, S 22.19%.
Description and references
Occurs in nature as the mineral greenockite. Prepd from CdSO4 + H2S: Milligan, J. Phys. Chem. 38, 797 (1934);
Frerichs, Naturwissenschaften 33, 281 (1946); prepn of single crystals: Grillot, Compt. Rend. 230, 1280 (1950);
Czyzak et al., J. Appl. Phys. 23, 932 (1952); Wagenknecht, Juza in Handbook of Preparative Inorganic Chemistry vol.
II, G. Brauer, Ed. (Academic Press, New York, 2nd ed., 1965)
pp 1098-1099. See also Colour
Index vol. 4 (3rd ed., 1971) p 4659.
Properties
Light-yellow or orange-colored cubic or hexagonal
crystals. Cubic structure: d 4.50; hexagonal structure: d 4.82. The light-yellow variety is also known
as Cadmium Yellow or Jaune Brilliant. d 4.82.
Sublimes at 980°. Soly in water (18°): 0.13 mg/100 g. Sol in concd
or warm dil mineral acids with evolution of H2S; readily
dec and dissolved by moderately dil HNO3.Caution
Cadmium and cadmium compounds are
listed as known human carcinogens: Report
on Carcinogens, Eleventh Edition (PB2005-104914, 2004)
p III-42.Use
As a pigment being fast to light and not affected
by H
2S; color for soaps; coloring glass yellow; coloring
textiles, paper, rubber; in printing inks, ceramic glazes, fireworks;
in phosphors and fluorescent screens; in scintillation counters, semiconductors,
photoconductors.
Therapeutic Category
Dermatologic.