Cobalt(II) Nitrate is a chemical compound with the formula Co(NO3)2. It consists of cobalt in the +2 oxidation state and two nitrate ions. This blue crystalline solid is often used in laboratories and industrial applications, including as a drying agent and in the production of cobalt-based catalysts. When dissolved in water, Cobalt(II) Nitrate forms a bright blue solution. It is important to handle this compound with care, as it can be toxic and may cause irritation. Proper safety measures should be taken when working with cobalt compounds to avoid health risks.