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Properties of FeCl2

Properties of FeCl2 (Iron(II) chloride):

Compound NameIron(II) chloride
Chemical FormulaFeCl2
Molar Mass126.751 g/mol

Chemical structure
FeCl2 (Iron(II) chloride) - Chemical structure
Lewis structure
3D molecular structure
Physical properties
AppearanceTan solid (anhydrous) Pale green solid (di-tetrahydrate)
Solubility644.0 g/100mL
Density3.1600 g/cm³
Helium 0.0001786
Iridium 22.562
Melting677.00 °C
Helium -270.973
Hafnium carbide 3958
Boiling1,023.00 °C
Helium -268.928
Tungsten carbide 6000

Alternative Names

Ferrous chloride
Rokühnite
Iron dichloride

Elemental composition of FeCl2
ElementSymbolAtomic weightAtomsMass percent
IronFe55.845144.0588
ChlorineCl35.453255.9412
Mass Percent CompositionAtomic Percent Composition
Fe: 44.06%Cl: 55.94%
Fe Iron (44.06%)
Cl Chlorine (55.94%)
Fe: 33.33%Cl: 66.67%
Fe Iron (33.33%)
Cl Chlorine (66.67%)
Mass Percent Composition
Fe: 44.06%Cl: 55.94%
Fe Iron (44.06%)
Cl Chlorine (55.94%)
Atomic Percent Composition
Fe: 33.33%Cl: 66.67%
Fe Iron (33.33%)
Cl Chlorine (66.67%)
Identifiers
CAS Number7758-94-3
SMILESCl[Fe]Cl
SMILESCl[Fe-4](Cl)([OH2+])([OH2+])([OH2+])[OH2+]
Hill formulaCl2Fe

Related compounds
FormulaCompound name
FeCl3Iron(III) chloride

Sample reactions for FeCl2
EquationReaction type
FeCl2 + Na3PO4 = Fe3(PO4)2 + NaCldouble replacement
FeCl2 + Cl2 = FeCl3synthesis
FeCl2 + K2S = FeS + KCldouble replacement
FeCl2 + NaOH = Fe(OH)2 + NaCldouble replacement
FeCl2 + Na2CO3 = FeCO3 + NaCldouble replacement

Related
Molecular weight calculator
Oxidation state calculator

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