Cobalt nitrate is a chemical salt formed from the metal cobalt and the nitrate ion. Cobalt nitrate is an oxidizer and is soluble in water. Cobalt nitrate is more commonly found as a hexahydrate, Co (NO3)2ยท6H2O. Cobalt nitrate is deliquescent in moist air and soluble in most polar solvents. It is derived from reacting metallic cobalt or one of its oxides, hydroxides, or carbonate with nitric acid. Cobalt nitrate is commonly used in dyes and inks.
The high solubility of cobalt nitrate makes it a common source of cobalt in metal organic frameworks and polymers.
Cobalt (II) nitrate is a strong oxidant.