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 ;
3D model (JSmol)	Interactive image;
ChemSpider	8466211 ;
ECHA InfoCard	100.013.881
PubChem CID	10290742;
UNII	TH5J4TUX6S ;
CompTox Dashboard (EPA)	DTXSID5061665 ;
	InChI InChI=1S/Fe.S/q+2;-2 Key: GNVXPFBEZCSHQZ-UHFFFAOYSA-N ; 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). verify (what is ?) 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.

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