Uses[edit]
It is commonly reduced to metallic cobalt or precipitated on various substrates for Fischer-Tropsch catalysis.[4]
Production[edit]
It is derived from reacting metallic cobalt or one of its oxides, hydroxides, or carbonate with nitric acid. It is commonly used in dyes and inks.[5]
CoCO3 + 2 HNO3 + 5 H2O → Co(NO3)2(H2O)6 + CO2
Above 55 °C, it dehydrates to the trihydrate and at higher temperatures to the monohydrate.