Dicopper oxide
COPPER(I) OXIDE · COPPER OXIDE · Cupper oxide · Copper oxide (Cu2O) · dicopper oxide · Oxyde cuivreux · Copox · Cu2-O
Identifiers & Physical Properties
| CAS No. | 1317-39-1 |
|---|---|
| Molecular formula | Cu2H2O |
| Average molar mass | 145.11 g/mol |
| Monoisotopic mass | 143.869759 g/mol |
| SMILES | O.[Cu].[Cu] |
| InChIKey | LBJNMUFDOHXDFG-UHFFFAOYSA-N |
| PubChem CID | 14830 |
Chemical & Physical Properties
| Topological polar surface area | 1 |
|---|---|
| Hydrogen bond donors | 1 |
| Hydrogen bond acceptors | 1 |
| Rotatable bonds | 0 |
| Heavy atoms | 3 |
| Formal charge | 0 |
| Complexity | 2 |
| Melting point | 1232 °C |
| Boiling point | 1800 °C |
| Density | 6 g/mL at 25 °C (lit.) |
| Refractive index | 2.705 |
| Flash point | 1800°C |
| Storage conditions | Inert atmosphere,Room Temperature |
| Solubility | insoluble in H2Opractically insoluble |
| Physical state | powder |
| Color | red |
| Specific gravity | 6. |
| Specific heat capacity | Cp(crystal): 0.44 J/(g·K), at 25℃ |
| Crystal Structure | Cu2O type |
| Sensitivity | Air & Moisture Sensitive |
| Merck | 14,2664 |
| crystal system | Cube |
| Space group | Pn3m |
| Lattice constant | a/nm |
| GHS pictogram | GHS02,GHS07,GHS09 |
| Signal word | Danger |
| GHS hazard statements | H225-H319-H410 |
| GHS precautionary statements | P210-P233-P240-P241-P273-P305+P351+P338 |
| Personal protective equipment (PPE) | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
| Hazard symbols | Xn,N,F |
| Risk statements (R) | 22-50/53-51/53-11 |
| Safety statements (S) | 22-60-61-16-7 |
| UN transport number | UN 3077 9/PG 3 |
| Water hazard class (WGK) | 3 |
| RTECS number | GL8050000 |
| TSCA inventory status | TSCA listed |
| Hazard class | 9Acute Tox. 4 InhalationAcute Tox. 4 OralAquatic Acute 1Aquatic Chronic 1Eye Dam. 1 |
| Packing group | III |
| Customs code | 28255000 |
| Storage class | 11 - Combustible Solids |
| Hazardous substances data | 1317-39-1(Hazardous Substances Data) |
| Toxicity | LD50 orally in rats: 0.47 g/kg (Smyth) |
| REACH registrations | Active |
| Limited quantities | 5.0 kg (11 lbs) (solid) |
| Excepted quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L) |
Safety & Regulations
| Personal protective equipment (PPE) | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Water hazard class (WGK) | 3 |
| TSCA inventory status | TSCA listed |
| RTECS number | GL8050000 |
| UN transport number | UN 3077 9/PG 3 |
| Customs code | 28255000 |
| Toxicity | LD50 orally in rats: 0.47 g/kg (Smyth) |
| Risk statements (R) | 22-50/53-51/53-11 |
| Signal word | Danger |
| GHS pictogram | GHS02,GHS07,GHS09 |
| Hazard symbols | Xn,N,F |
| Safety statements (S) | 22-60-61-16-7 |
| Hazard class | 9Acute Tox. 4 InhalationAcute Tox. 4 OralAquatic Acute 1Aquatic Chronic 1Eye Dam. 1 |
| Storage class | 11 - Combustible Solids |
| Packing group | III |
| GHS hazard statements | H225-H319-H410 |
| Limited quantities | 5.0 kg (11 lbs) (solid) |
| Excepted quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L) |
| REACH registrations | Active |
| GHS precautionary statements | P210-P233-P240-P241-P273-P305+P351+P338 |
| Hazardous substances data | 1317-39-1(Hazardous Substances Data) |
Applications & Uses
Uses
1. It can be used for coating of ship bottom coating, pesticide germicide, and glaze and used for copper oxide rectifier, photocell, electroplating and copper salt production. 2. It can be used in the manufacture of antifouling paint (used to kill low-level marine animals), pesticides, and various copper salts, analytical reagents and red glass. It can also be used in the rectifier plating in the electrical industry. It can also be used as the coloring agent for ceramic and enamel. 3. It can be used as analytical reagents and germicide. 4. It can be used as the reducing agent for determination of nitrogen content in azo compounds, red glaze, electroplating, germicide, red glass, ship bottom paint, plant seeds sterilization and catalyst.
Description
A widely used copper fungicide. It has a low aqueous solubility and a low volatility. As a heavy metal, copper itself will not degrade in the environment. It is moderately toxic to mammals and most biodiversity.
Uses
Copper (I) oxide is used as red pigment for glass; in antifouling paints; fungicide.
Uses
Red pigment for glass and ceramic glazes, and as a catalystCopper(I) oxide is used in antifouling, marine paint, brazing paste, antifungal treatment for plant seeds. Used as a hydrogen scavenger in copper brass and bronze and high grade lubricants. Finds uses in glass and ceramic pigments, ferrite magnets, catalyst in organic synthesis, dyes and dye intermediates and as catalysts.
Uses
Fungicide; antiseptic for fishnets; in antifouling paints for marine use; in photoelectric cells; as red pigment for glass, ceramic glazes; in brazing pastes; in rectifiers; as catalyst.
General Description
Copper(I) oxide is a weak inorganic base that can be used to activate halides for nucleophilic substitution reaction. It is also used in decarboxylation and cyclo condensation reactions.
Preparation & Synthesis
Preparation
Copper(I) oxide decomposes above 1800°C but can be prepared by heating copper metal in air above 1030°C. To prevent further oxidation, the material must be cooled in an inert atmosphere. Lower temperatures may be used to produce the oxide if the material is blended with a reducing agent such as carbon and heated to 750°C in an inert atmosphere. The product must be stabilized with isophthalic acid or pine oil (Ayers, 1953). A particularly stable copper(I) oxide can be prepared by blending copper powder and cupric oxide in stoichiometric amounts and heating to 800-900°C. Lower temperatures can be used if ammonia or certain ammonium salts are added to the blend (Day, 1969; Drapeau and Johnson, 1956; Drapeau and Johnson, 1959).