Copper(II) Oxide (Cupric Oxide), BLACK, CuO, 5 lb , 99.5% High Purity ……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………… 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. As a significant product of copper mining, copper(II) oxide is the starting point for the production of other copper salts. For example, many wood preservatives are produced from copper oxide. Cupric oxide is used as a pigment in ceramics to produce blue, red, and green, and sometimes gray, pink, or black glazes. It is also used as a dietary supplement in animals. It is also used when welding with copper alloys………………………………………………………………………………………………………………………………………………. Testing Policy: Testing of raw materials should be an integral part of any process including ceramic or glass making / manufacturing. Upon receipt of any new material, we strongly recommend that you test the material. “Paul Brown Studio Arts and Supplies” . has no control over either the variations that may occur in the natural materials or their application. All products are supplied as is from the manufacturer. No additional processing or technical support is supplied. Therefore, our products are sold with the understanding that the user is solely responsible for determining suitability for any purpose and the results obtained. There are no warranties expressed or implied, regarding the user’s finished product or results. ………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………… Return Policy: Returns are not accepted