WebElements Periodic Table of the Elements | Cobalt

Cobalt compounds: cobalt dichloride dihydrate

The cobalt in cobalt dichloride dihydrate formally is in the oxidation state 2.

Cobalt dichloride dihydrate

Formula as often written: CoCl₂.2H₂O
Hill system formula: Cl₂Co₁H₄O₂
CAS registry number: [16544-92-6]
Formula weight: 165.869
Class: chloride

Synonyms

cobalt dichloride dihydrate
cobalt(II) chloride 2-water
cobalt chloride 2-water

Physical properties

Colour: blue or bluish pink
Appearance: crystalline solid
Melting point:
Boiling point:
Density: 2477 kg m^-3

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Element analysis

Element percentages for the elements in cobalt dichloride dihydrate
Element	%
Cl	42.75
Co	35.53
H	2.43
O	19.29

Synthesis

Not available

Isotope pattern

What follows is the calculated isotope pattern for the CoCl₂.2H₂O unit with the most intense ion set to 100%.

Formula: Co₁Cl₂H₄O₂

mass  %
165 100.0 __________________________________________________
166   0.1 
167  64.4 ________________________________
168   0.1 
169  10.5 _____
170   0.0 
171   0.0

References

The data on these compounds pages are assembled and adapted from the primary literature and several other sources including the following.

R.T. Sanderson in Chemical Periodicity, Reinhold, New York, USA, 1960.
N.N. Greenwood and A. Earnshaw in Chemistry of the Elements, 2nd edition, Butterworth, UK, 1997.
F.A. Cotton, G. Wilkinson, C.A. Murillo, and M. Bochmann, in Advanced Inorganic Chemistry, John Wiley & Sons, 1999.
A.F. Trotman-Dickenson, (ed.) in Comprehensive Inorganic Chemistry, Pergamon, Oxford, UK, 1973.
R.W.G. Wyckoff, in Crystal Structures, volume 1, Interscience, John Wiley & Sons, 1963.
A.R.West in Basic solid state chemistry Chemistry, John Wiley & Sons, 1999.
A.F. Wells in Structural inorganic chemistry, 4th edition, Oxford, UK, 1975.
J.D.H. Donnay, (ed.) in Crystal data determinative tables, ACA monograph number 5, American Crystallographic Association, USA, 1963.
D.R. Lide, (ed.) in Chemical Rubber Company handbook of chemistry and physics, CRC Press, Boca Raton, Florida, USA, 77th edition, 1996.
J.W. Mellor in A comprehensive treatise on inorganic and theoretical chemistry, volumes 1-16, Longmans, London, UK, 1922-1937.
J.E. Macintyre (ed.) in Dictionary of inorganic compounds, volumes 1-3, Chapman & Hall, London, UK, 1992.