Nickel nitrate, also known as nickel(II) nitrate, is a green crystalline solid that is soluble in water. It is commonly used in electroplating baths for the deposition of nickel onto metal surfaces, providing corrosion resistance and decorative finishes. Nickel nitrate is also utilized as a catalyst in chemical reactions, as a mordant in textile dyeing, and as a precursor for the synthesis of other nickel compounds.