| Properties: | |
| Brown, amorphous powder or bluish-red solid. Insoluble in water; soluble in alcohol, ether, oils. Composition indefinite. Combustible. | |
| Derivation: | |
| By treating cobaltous hydroxide or cobaltous acetate with naphthenic acid. | |
| Use: | |
| Paint and varnish drier, bonding rubber to steel and other metals. | |