Cobalt(II) acetate tetrahydrate is widely used as a catalyst in oxidation reactions a precursor for the preparation of cobalt-containing materials and catalysts a reagent in laboratory research and in the manufacture of pigments ceramics and battery materials.

The primary purpose of cobalt(II) acetate tetrahydrate is to provide cobalt ions for use as a catalyst precursor or reagent in chemical synthesis and industrial processes.

Cobalt(II) acetate tetrahydrate is a reddish pink crystalline solid that is soluble in water and slightly soluble in alcohol. It is commonly used as a catalyst precursor for other cobalt compounds and in laboratory syntheses and it decomposes upon heating losing water molecules before forming cobalt(II) oxide.