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Properties of CoSO4

Properties of CoSO4 (Cobalt(II) sulfate):

Compound NameCobalt(II) sulfate
Chemical FormulaCoSO4
Molar Mass154.995795 g/mol

Chemical structure
CoSO4 (Cobalt(II) sulfate) - Chemical structure
Lewis structure
3D molecular structure
Physical properties
Appearancereddish crystalline (anhydrous, monohydrate) pink salt (hexahydrate)
Odorodorless (heptahydrate)
Solubility362.0 g/100mL
Density3.7100 g/cm³
Helium 0.0001786
Iridium 22.562
Melting735.00 °C
Helium -270.973
Hafnium carbide 3958

Alternative Names

Cobaltous sulfate

Elemental composition of CoSO4
ElementSymbolAtomic weightAtomsMass percent
CobaltCo58.933195138.0224
SulfurS32.065120.6877
OxygenO15.9994441.2899
Mass Percent CompositionAtomic Percent Composition
Co: 38.02%S: 20.69%O: 41.29%
Co Cobalt (38.02%)
S Sulfur (20.69%)
O Oxygen (41.29%)
Co: 16.67%S: 16.67%O: 66.67%
Co Cobalt (16.67%)
S Sulfur (16.67%)
O Oxygen (66.67%)
Mass Percent Composition
Co: 38.02%S: 20.69%O: 41.29%
Co Cobalt (38.02%)
S Sulfur (20.69%)
O Oxygen (41.29%)
Atomic Percent Composition
Co: 16.67%S: 16.67%O: 66.67%
Co Cobalt (16.67%)
S Sulfur (16.67%)
O Oxygen (66.67%)
Identifiers
CAS Number10124-43-3
SMILES[Co+2].[O-]S([O-])(=O)=O
SMILES[OH2+][Co-4]([OH2+])([OH2+])([OH2+])([OH2+])[OH2+].[O-]S(=O)(=O)[O-]
SMILES[OH2+][Co-4]([OH2+])([OH2+])([OH2+])([OH2+])[OH2+].[O-]S(=O)(=O)[O-].O
Hill formulaCoO4S

Related compounds
FormulaCompound name
CoSO3Cobalt(II) sulfite
Co2(SO4)3Cobalt(III) sulfate
Co2(SO3)3Cobalt(III) sulfite

Sample reactions for CoSO4
EquationReaction type
KC2H3O2 + CoSO4 = K2SO4 + Co(C2H3O2)2double replacement
NH4Cl + CoSO4 = (NH4)2SO4 + CoCl2double replacement
Al + CoSO4 = AlSO4 + Cosingle replacement
CoSO4 + Pb(NO3)2 = Co(NO3)2 + PbSO4double replacement
Al + CoSO4 = Al2(SO4)3 + Cosingle replacement

Related
Molecular weight calculator
Oxidation state calculator

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