2825.50.10.00 - Cupric oxide

This HTS category, 2825.50.10.00, specifically covers cupric oxide. Cupric oxide, also known as copper(II) oxide, is a black solid compound of copper and oxygen where copper is in the +2 oxidation state. It is distinct from cuprous oxide, which features copper in the +1 oxidation state and is classified under 2825.50.20.00.

The defining characteristic for classification within this heading is the chemical composition and the oxidation state of the copper. Cupric oxide is generally produced through the oxidation of copper or copper compounds at high temperatures. Its primary uses include pigments, in glazes for ceramics, as a catalyst in chemical reactions, and in the production of other copper salts.

As this is a leaf node within the HTS structure, there are no further subdivisions. Therefore, classification under 2825.50.10.00 is definitive for pure or impure cupric oxide, as long as its essential character is not altered by other materials. Any mixtures or preparations where cupric oxide is a component but does not impart the essential character would be classified elsewhere based on the predominant constituent or function.