Cupric Oxide, also known as Copper(II) Oxide, Copper Monoxide, Oxocopper, Copper Brown, Paramelaconite, and Ketocopper, has the chemical formula CuO. It appears as black to brown crystalline powder, flakes, or beads with no odor. It is insoluble in Water and Alcohol at ambient conditions. Copper oxide is known as Tenorite in mineral form and it can be formed by heating Copper in the presence of Oxygen. Reagent Grade chemicals have high purity and are best suited for analytical applications. They're important in research because of their reliable, dependable, and repeatable results. Lab Alley sells its high-quality Cupric Oxide, Reagent Grade, online at laballey.com in the United States of America (USA). Cupric Oxide, Reagent Grade is highly recommended for research labs and commercial uses due to its high purity.