Used in the production of cobalt-based pigments for ceramics and glass, providing vibrant blue colors. It serves as a precursor in the synthesis of other cobalt compounds, such as cobalt oxide and cobalt salts (including cobalt sulfate). Applied in the manufacturing of catalysts for chemical reactions, including those in the petroleum industry. Utilized in the preparation of cobalt coatings and alloys, which are essential in aerospace and automotive industries for their strength and resistance to high temperatures. Also employed in the production of rechargeable batteries, particularly in the formulation of cathodes for lithium-ion batteries. Additionally, used as a mineral supplement in animal feed to provide essential cobalt.