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The color of cuprous oxide Cu2O
Cuprous oxide, a red crystalline substance, can be produced by electrolysis or furnace methods. Hydrogen, carbon monoxide, charcoal or iron can easily reduce it to metallic copper. It imparts a red color to the glass and is used as an antifouling paint.
Why is the color of cuprous oxide red?
Red copper is a reduced form of ordinary black copper oxide (CuO). During the normal oxidative firing process, it will be converted into the form of copper oxide (CuO), resulting in a normal green color in the glaze and glass. If it is reduced and fired, it will maintain its Cu2O structure to produce a typical copper red color.

Cuprous oxide overview
It is a bright red powdery solid and hardly decomposes water. It disproportionates to divalent copper and copper in acid solution, and gradually oxidizes to black in the nearby air. Copper oxide and Cu2O are mainly used to make antifouling paint on the bottom of ships (used to kill low-level marine animals), insecticides, various copper salts, analytical reagents, red glass, and the preparation of copper coatings and copper alloy coating solutions.
Cuprous oxide application
1. Suitable for pesticides.
2. Suitable for antibacterial fibers and clothing.
3. Cuprous oxide is also suitable for agricultural fungicides.
4. As a preservative, it is suitable for ship primer to prevent pollution and microorganisms.
5. Used in the manufacture of various copper salts and analytical reagents.
6. Used as a catalyst for organic synthesis.
7. Cuprous oxide is used as a pigment in ceramics to produce blue, red and green, and sometimes it can produce gray, pink or black glazes.
8. It has also been mistakenly used as a dietary supplement in animal feed. Due to the low biological activity, the absorbable copper is negligible.
9. It is also used when welding with copper alloys.
Cuprous oxide Cu2O price
The price of cuprous oxide Cu2O varies randomly with factors such as the production cost, transportation cost, international situation, exchange rate, market supply and demand of cuprous oxide Cu2O. Tanki New Materials Co., Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for cuprous oxide Cu2O, please feel free to contact us for the latest price of cuprous oxide Cu2O.
Suppliers of Cuprous Oxide Cu2O
As a global supplier of cuprous oxide Cu2O, Tanki New Materials Co., Ltd. has extensive experience in advanced engineering material properties, applications and cost-effective manufacturing. The company has successfully developed a series of powder materials (including boron carbide, aluminum carbide, titanium carbide, etc.), high-purity targets, functional ceramics, structural devices, and provides OEM services.
| Technical Parameter of Cuprous Oxide Cu2O pwder | |||||||||||
| As | Cd | Hg | Pb | Ni | Bi | Zn | Mn | Sb | Te | Ag | Fe |
| <10ppm | <10ppm | <10ppm | <10ppm | <90ppm | <10ppm | <54ppm | <47ppm | <10ppm | <10ppm | <24ppm | <170ppm |
| Copper (I) Oxide Properties | |
| Other Names | cuprous oxide, red copper oxide, dicopper oxide, Cu2O powder |
| CAS No. | 1317-39-1 |
| Compound Formula | Cu2O |
| Molecular Weight | 143.09 |
| Appearance | Brownish-red Powder |
| Melting Point | 1235 °C |
| Boiling Point | 1800 °C |
| Density | 6.0 g/cm3 |
| Solubility in H2O | N/A |
| Exact Mass | 141.854 g/mol |
| Copper (I) Oxide Health & Safety Information | |
| Signal Word | Warning |
| Hazard Statements | H302 + H332-H319-H410 |
| Hazard Codes | Xn, N |
| Risk Codes | 22-50/53 |
| Safety Statements | 22-60-61 |
| Transport Information | UN 3077 9 / PGIII |
