Nickel(II) titanate is an inorganic compound with the chemical formula NiTiO3 nickel(II) titanate, also known as nickel titanium oxide, is a coordination compound between nickel(II), titanium(IV) and oxide ions. It has the appearance of a yellow powder. There are several methods of synthesis for nickel(II) titanate. The first method involves nickel(II) titanate's melting temperature of over 500 °C at which its precursor decomposes to give nickel(II) titanate as a residue. Nickel(II) titanate has been used as a catalyst for toluene oxidation. The second method involved using enthalpy and entropy on the reaction to synthesize nickel(II) titanate through its phase transition.