Iron(II) sulfide

"FeS" redirects here. For other uses, see FES (disambiguation).
Iron(II) sulfide
Sample of iron(II) sulfide
Names
Other names
Iron sulfide, ferrous sulfide, black iron sulfide, protosulphuret of iron
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.013.881 Edit this at Wikidata
UNII
  • InChI=1S/Fe.S/q+2;-2 checkY
    Key: GNVXPFBEZCSHQZ-UHFFFAOYSA-N checkY
  • InChI=1/Fe.S/q+2;-2
    Key: GNVXPFBEZCSHQZ-UHFFFAOYAC
  • [Fe+2].[S-2]
Properties
FeS
Molar mass 87.910 g/mol
Appearance Grey, sometimes in lumps or powder
Density 4.84 g/cm3
Melting point 1,194 °C (2,181 °F; 1,467 K)
negligible (insoluble)
Solubility reacts in acid
+1074·10−6 cm3/mol
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Source of hydrogen sulfide, can be pyrophoric
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 2: Must be moderately heated or exposed to relatively high ambient temperature before ignition can occur. Flash point between 38 and 93 °C (100 and 200 °F). E.g. diesel fuelInstability 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorusSpecial hazards (white): no code
1
2
2
variable
Related compounds
Other anions
 Iron(II) oxide
Iron(II) selenide
Iron(II) telluride
Other cations
 Manganese(II) sulfide
Cobalt(II) sulfide
Related Iron sulfides
 Iron(III) sulfide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Iron(II) sulfide or ferrous sulfide (Br.E. sulphide) is one of a family of chemical compounds and minerals with the approximate formula FeS. Iron sulfides are often iron-deficient non-stoichiometric. All are black, water-insoluble solids.