Cobalt(II) sulfate is an inorganic compound with the chemical formula CoSO4. It consists of cobalt in a +2 oxidation state and a sulfate ion. This compound typically appears as a blue crystalline solid and is soluble in water. Cobalt(II) sulfate is often used in various applications, including as a drying agent in paints and varnishes, and in the production of cobalt salts. In addition to its industrial uses, cobalt(II) sulfate is also important in the field of agriculture as a micronutrient for plants. It provides essential cobalt, which is necessary for the growth of certain bacteria that help in nitrogen fixation. Proper management of cobalt levels is crucial for maintaining soil health and crop productivity.