Black Nickel Oxide also known as nickel tri-oxide is a powdered inorganic compound with a grain size in between 10 to 12 microns. It consists of 77 percent of nickel and 0.01 percent of iron. The compound has a chemical formula of Ni2O3 with a molar mass of 165.39 grams per mol. It can be used in various industrial applications as pigments and as an ion exchange agent. Buy from us this chemical in bulk at a reasonable and low price.