Copper(II) oxide or cupric oxide is the inorganic compound with the formula CuO. A black solid, it is one of the two stable oxides of copper, the other being Cu2O. As a mineral, it is known as tenorite and paramelaconite. It is a product of copper mining and the precursor to many other copper-containing products and chemical compounds.
C 3361 Cupric oxide, 99.7% Cas 1317-38-0 - used as a pigment in ceramics to produce blue, red, and green, and sometimes gray, pink, or black glazes.