Tags: Chemical Compound, Chemical Substance.
Nickel(III) oxide (Ni2O3) has been referred to in the literature but is not a well characterised compound. The substance black nickel oxide is sometimes described as being Ni2O3; however the composition quoted by suppliers has a nickel content of around 77% by weight whereas Ni2O3 would have 70.98% Ni by weight and may be non-stoichiometric NiO.There are references in the literature to traces of Ni2O3 on nickel surfaces and as intermediates in nickel oxidation e.g.
