cupric oxide

chemical compound

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June 17, 2026

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Cupric oxide, also known as copper(II) oxide or black copper oxide, is a chemical compound with the formula CuO. It is one of two copper oxides, the other being cuprous oxide (Cu₂O). Cupric oxide typically appears as a black powder and can be produced by heating copper salts like the carbonate, hydroxide, or nitrate, or by oxidizing cuprous oxide.12

This compound is used as a pigment, imparting a green color to glass and ceramics. It also serves as a catalyst for hydrogenations and in chemical analysis. Cupric oxide can be dissolved in mineral acids, forming blue or green solutions.12

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copper
Principal compounds
…compounds of commercial value include cupric oxide (CuO), cupric chloride (CuCl₂), and cupric sulfate (CuSO₄). Cupric oxide is a black powder that occurs as the minerals tenorite and paramelaconite. Large amounts are produced by roasting mixed copper oxide ores in a furnace at a temperature below 1,030 °C (1,900 °F).…
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…compounds of commercial value include cupric oxide (CuO), cupric chloride (CuCl₂), and cupric sulfate (CuSO₄). Cupric oxide is a black powder that occurs as the minerals tenorite and paramelaconite. Large amounts are produced by roasting mixed copper oxide ores in a furnace at a temperature below 1,030 °C (1,900 °F).…
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pottery
Painting
Cupric oxide gives a distinctive series of blues, cuprous oxide a series of greens, and, in the presence of an excess of carbon monoxide (which the Chinese achieved by throwing wet wood into the kiln), cupric oxide yields a bluish red. This particular colour is…
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Cupric oxide gives a distinctive series of blues, cuprous oxide a series of greens, and, in the presence of an excess of carbon monoxide (which the Chinese achieved by throwing wet wood into the kiln), cupric oxide yields a bluish red. This particular colour is…
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copper processing
Oxides
…valences: cuprous oxide, Cu₂O, and cupric oxide, CuO. Cuprous oxide, a red crystalline material, can be produced by electrolytic or furnace methods. It is reduced readily by hydrogen, carbon monoxide, charcoal, or iron to metallic copper. It imparts a red colour to glass and is used for antifouling paints. It…
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…valences: cuprous oxide, Cu₂O, and cupric oxide, CuO. Cuprous oxide, a red crystalline material, can be produced by electrolytic or furnace methods. It is reduced readily by hydrogen, carbon monoxide, charcoal, or iron to metallic copper. It imparts a red colour to glass and is used for antifouling paints. It…
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