Iron(II) sulfide

Iron(II) sulfide

Names
Other names Iron sulfide, ferrous sulfide, black iron sulfide, protosulphuret of iron
Identifiers
CAS Number	1317-37-9 Y
3D model (JSmol)	Interactive image
ChemSpider	8466211 Y
ECHA InfoCard	100.013.881
PubChem CID	10290742
UNII	TH5J4TUX6S Y
CompTox Dashboard (EPA)	DTXSID5061665
InChI InChI=1S/Fe.S/q+2;-2 Y Key: GNVXPFBEZCSHQZ-UHFFFAOYSA-N Y InChI=1/Fe.S/q+2;-2 Key: GNVXPFBEZCSHQZ-UHFFFAOYAC
SMILES [Fe+2].[S-2]
Properties
Chemical formula	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)
Solubility in water	negligible (insoluble)
Solubility	reacts in acid
Magnetic susceptibility (χ)	+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)	1 2 2
Autoignition temperature	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). Y verify (what is YN ?) Infobox references

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.