Nomenclature
CAS number: 1317-37-9
Iron sulfuret.
FeS; mol wt 87.91.
Fe 63.53%, S 36.47%.
Description and references
Occurs in nature as the minerals: magnetkies, pyrrhotine, troillite. Usually prepd from the elements: Lux in Handbook of Preparative Inorganic Chemistry vol 2, G. Brauer, Ed. (Academic Press, New York, 2nd
ed., 1965) p 1502. The commercial product is ≈75-80% FeS.
Properties
Colorless hexagonal crystals when pure; usually
gray to brownish-black lumps, rods or granular powder. mp 1194°; d 4.84. Trimorphic with transition points at
135° and 325°. Oxidized by moist air to S and Fe3O4. Practically insol in water. Soluble in acids with the
evolution of H2S.Use
As a laboratory source of H
2S; in the
ceramic industry; as a paint pigment; in anodes; in lubricant coatings.