Ni(C2H3O2)2, also known as nickel(II) acetate, is a chemical compound composed of nickel, carbon, hydrogen, and oxygen. It typically appears as a greenish or blue-green solid and is soluble in water. This compound is often used in various chemical reactions and as a catalyst in organic synthesis. Nickel(II) acetate can also serve as a precursor for the preparation of other nickel compounds. It is important in the production of nickel-based catalysts and is utilized in electroplating processes. Safety precautions should be taken when handling this compound, as nickel can be toxic in certain forms.