Copper Oxide, Black
Black copper oxide is a black powder used as a colorant in the preparation of slips and glazes. It can act as a flux and produce more fluid glazes. In oxidation firings, it typically produces greens, while its reduction fired result is red. Because it contains a higher percentage of copper than copper carbonate, the fired color with copper oxide is more intense than copper carbonate.
Chemical Formula: CuO
Synonyms: Cupric Oxide, Black Copper Oxide