Nickel Nitrate, with the chemical formula Ni(NO3)2, is a green crystalline solid that is highly soluble in water. It is a compound of nickel and nitric acid and is known for its versatility in different chemical and industrial applications. Nickel nitrate is used primarily as a precursor in the synthesis of other nickel compounds and as a catalyst in various chemical reactions, particularly in the production of organic compounds.

One notable application of nickel nitrate is in the preparation of nickel nanoparticles, which have numerous applications in catalysis, electronics, and materials science. It also serves as a source of nickel ions in laboratory settings and is used for nickel plating, similar to other nickel salts. Additionally, nickel nitrate is employed in the manufacture of ceramics, as a corrosion inhibitor, and in the production of pigments and dyes. Its varied applications make it a valuable component in several industries and research fields.