Cobalt(II) naphthenate

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Cobalt(II) naphthenate
Other names	Naphtolite
Identifiers
CAS number	[61789-51-3]
RTECS number	QK8925000
Properties
Molecular formula	N/A
Appearance	brown amorphous or bluish-red solid
Density	0.96 g/cm³, solid
Melting point	140 °C
Boiling point	>150 °C
Solubility in water	none
Hazards
Flash point	49 °C
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Cobalt(II) naphthenate is an ill-defined mixture of cobalt(II) salt compounds of naphthenic acids. They are widely used as oil drying agents for the autoxidative crosslinking of olefins. Although metal naphthenates are not pure by conventional chemical sense, naphtenates are widely employed because they are soluble in nonpolar media, such as alkyd resins. The fact that naphthenates are mixtures ensures that the naphthenates will not crystallize, conferring high solubility. A second virtue of these species is their low cost. A well-defined compound that exhibits many of the properties of cobalt naphthenate is the cobalt(II) salt of 2-ethylhexanoic acid.

Sometimes naphthenates are described as salts, but they are probably also non-ionic coordination complexes.

Cobalt(II) compounds have catalytic properties similar to the naphthenates of the neighboring chemical element iron.

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