Copper(I) Oxide | Cuprous Oxide
Technical Specifications of Chemicals
|
No |
Item |
Index |
|
1 |
Cu2O total reducing rate |
≥97 |
|
2 |
Copper（Cu） |
≤2 |
|
3 |
Cuprous Oxide (Cu2O） |
≥96 |
|
4 |
Total Copper |
≥86 |
|
5 |
Chloride ( Cl- ), % |
≤0.5 |
|
6 |
Sulfate |
≤0.5 |
Physical Data
1. Properties: red or dark red octagonal cubic crystal system crystalline powder. In the air will quickly turn blue, in the wet air gradually oxidized to black copper oxide.
2. Density (g/cm³,25/4℃): 6.0
3. relative vapor density (g/cm³,air=1): 4.9
4. melting point (ºC): 1235
5. boiling point (ºC, atmospheric pressure): 1800
6. refractive index: 2.705
7. flash point (ºC): 1800
8. Solubility: insoluble in water and alcohol, soluble in hydrochloric acid, ammonium chloride, ammonia, slightly soluble in nitric acid. Dissolved in hydrochloric acid to produce white crystalline powder of cuprous chloride. When encountered with dilute sulfuric acid and dilute nitric acid to generate copper salts. Turns blue rapidly in air. Soluble in concentrated alkali, ferric chloride and other solutions.
Storage Method
1. Store in dry, well-ventilated warehouse, not mixed with oxidizer. Container must be sealed to prevent contact with the air into copper oxide and reduce the value of use. It should not be stored and mixed with strong acid, strong alkali and foodstuff.
2. When loading and unloading, it should be handled gently to prevent the package from being damaged.
Synthesis Method
Dry copper powder is mixed with copper oxide after removing impurities, and sent into the calciner to be heated to 800-900 ℃ calcined into cuprous oxide. After taking out, use magnet to absorb the mechanical impurities, and then crushed to 325 mesh to produce cuprous oxide finished products. If copper sulfate is used as raw material, the copper in copper sulfate is first reduced by iron, and the subsequent reaction steps are the same as those of the copper powder as raw material method.
Nature And Stability
1. Will not decompose if used and stored according to specifications, no known hazardous reactions, avoid oxides, moisture/humidity, air.2. Does not form copper salts with dilute sulfuric and nitric acids. Turns blue rapidly in air. Soluble in concentrated alkalis, ferric chloride and other solutions. Highly toxic.
3. Although cuprous oxide is stable in dry air, it will slowly oxidize in wet air to produce copper oxide, so it can be used as a deoxidizer; in addition, it is easy to be reduced to metallic copper with a reducing agent. Cuprous oxide is insoluble in water, and ammonia solution, concentrated hydrohalic acid to form a complex and dissolved, very easy to dissolve in alkaline aqueous solution.