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Properties of CoCl2

Properties of CoCl2 (Cobalt(II) chloride):

Compound NameCobalt(II) chloride
Chemical FormulaCoCl2
Molar Mass129.839195 g/mol

Chemical structure
CoCl2 (Cobalt(II) chloride) - Chemical structure
Lewis structure
3D molecular structure
Physical properties
Appearanceblue crystals (anhydrous) violet-blue (dihydrate) rose red crystals (hexahydrate)
Solubility436.0 g/100mL
Density3.3560 g/cm³
Helium 0.0001786
Iridium 22.562
Melting726.00 °C
Helium -270.973
Hafnium carbide 3958
Boiling1,049.00 °C
Helium -268.928
Tungsten carbide 6000

Alternative Names

Cobaltous chloride
Cobalt dichloride
Muriate of cobalt

Elemental composition of CoCl2
ElementSymbolAtomic weightAtomsMass percent
CobaltCo58.933195145.3894
ChlorineCl35.453254.6106
Mass Percent CompositionAtomic Percent Composition
Co: 45.39%Cl: 54.61%
Co Cobalt (45.39%)
Cl Chlorine (54.61%)
Co: 33.33%Cl: 66.67%
Co Cobalt (33.33%)
Cl Chlorine (66.67%)
Mass Percent Composition
Co: 45.39%Cl: 54.61%
Co Cobalt (45.39%)
Cl Chlorine (54.61%)
Atomic Percent Composition
Co: 33.33%Cl: 66.67%
Co Cobalt (33.33%)
Cl Chlorine (66.67%)
Identifiers
CAS Number7646-79-9
SMILESCl[Co]Cl
SMILESCl[Co-4](Cl)([OH2+])([OH2+])([OH2+])[OH2+].O.O
Hill formulaCl2Co

Related compounds
FormulaCompound name
CoCl3Cobalt(III) chloride

Sample reactions for CoCl2
EquationReaction type
CoCl2 + NaOH = Co(OH)2 + NaCldouble replacement
CoCl2 + Na2CO3 = CoCO3 + NaCldouble replacement
COCl2 + H2O = HCl + CO2double replacement
CoCl2 + AgNO3 = Co(NO3)2 + AgCldouble replacement
CoCl2 + Na3PO4 = Co3(PO4)2 + NaCldouble replacement

Related
Molecular weight calculator
Oxidation state calculator

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