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Properties of FeS

Properties of FeS (Iron(II) sulfide):

Compound NameIron(II) sulfide
Chemical FormulaFeS
Molar Mass87.91 g/mol

Chemical structure
FeS (Iron(II) sulfide) - Chemical structure
Lewis structure
3D molecular structure
Physical properties
AppearanceGrey, sometimes in lumps or powder
Solubilityinsoluble
Density4.8400 g/cm³
Helium 0.0001786
Iridium 22.562
Melting1,194.00 °C
Helium -270.973
Hafnium carbide 3958

Alternative Names

Iron sulfide, ferrous sulfide, black iron sulfide, protosulphuret of iron

Elemental composition of FeS
ElementSymbolAtomic weightAtomsMass percent
IronFe55.845163.5252
SulfurS32.065136.4748
Mass Percent CompositionAtomic Percent Composition
Fe: 63.53%S: 36.47%
Fe Iron (63.53%)
S Sulfur (36.47%)
Fe: 50.00%S: 50.00%
Fe Iron (50.00%)
S Sulfur (50.00%)
Mass Percent Composition
Fe: 63.53%S: 36.47%
Fe Iron (63.53%)
S Sulfur (36.47%)
Atomic Percent Composition
Fe: 50.00%S: 50.00%
Fe Iron (50.00%)
S Sulfur (50.00%)
Identifiers
CAS Number1317-37-9
SMILES[Fe+2].[S-2]
Hill formulaFeS

Related compounds
FormulaCompound name
Fe2S3Iron(III) sulfide
FeS*Fe2S3Iron(II,III) sulfide

Sample reactions for FeS
EquationReaction type
FeS + O2 = Fe2O3 + SO2double replacement
FeS + HCl = FeCl2 + H2Sdouble replacement
FeS + O2 = FeO + SO2double replacement
FeS + HBr = FeBr2 + H2Sdouble replacement
H2SO4 + FeS = FeSO4 + H2Sdouble replacement

Related
Molecular weight calculator
Oxidation state calculator

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