Cobalt (Ⅲ) oxide
Cobaltic oxide
CAS: 1308-04-9
Molecular Formula: Co2O3
Cobalt (Ⅲ) oxide - Names and Identifiers
Cobalt (Ⅲ) oxide - Physico-chemical Properties
| Molecular Formula | Co2O3 |
| Molar Mass | 165.86 |
| Density | 6.11g/mLat 25°C(lit.) |
| Melting Point | 895°C (dec.)(lit.) |
| Water Solubility | insoluble H2O; soluble conc acids [HAW93] |
| Appearance | Black powder |
| Storage Condition | Inert atmosphere,Room Temperature |
| Physical and Chemical Properties | Colorless monoclinic crystal. melting point 86.5 ℃ relative density 1.69(17 ℃) solubility: soluble in water, acid and alkali, insoluble in alcohol. The aqueous solution was acidic. |
| Use | Used as analytical reagents, oxidants and catalysts, but also for the preparation of cobalt and nickel-free cobalt salts |
Cobalt (Ⅲ) oxide - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R40 - Limited evidence of a carcinogenic effect R43 - May cause sensitization by skin contact R22 - Harmful if swallowed |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S36/37 - Wear suitable protective clothing and gloves. |
| WGK Germany | 1 |
| RTECS | GG2500000 |
Cobalt (Ⅲ) oxide - Upstream Downstream Industry
Cobalt (Ⅲ) oxide - Nature
Open Data Verified Data
A black-gray hexagonal or orthorhombic powder. Melting point 895 C (decomposition);d 5. 18. Dissolved in hot hydrochloric acid release chlorine; Dissolved in hot dilute sulfuric acid release oxygen. Insoluble in water, ethanol. Insoluble in water, ethanol, soluble in acid. It can be reduced to cobalt oxide by hydrogen at 125 ℃, cobalt oxide at 200 ℃, and cobalt metal at 250 ℃.
Last Update：2024-01-02 23:10:35
Cobalt (Ⅲ) oxide - Preparation Method
Open Data Verified Data
nickel-free analytically pure cobalt hydroxide was placed in a porcelain dish and burned in an electric furnace at 350 to 370 ° C. For 4 to 5 hours. Nickel-free analytical pure cobalt trioxide is available. Alternatively, nickel-free basic cobalt carbonate is placed in a porcelain dish and burned in an electric furnace at 350-370 ° C. For 4-5H to obtain cobalt trioxide.
Last Update：2022-01-01 09:01:45
Cobalt (Ⅲ) oxide - Use
Open Data Verified Data
used as an analytical reagent, an oxidizing agent, a catalyst, and the preparation of cobalt and nickel-free cobalt salts.
Last Update：2022-01-01 09:01:45
Cobalt (Ⅲ) oxide - Safety
Open Data Verified Data
It has a stimulating effect on the eyes, respiratory system and gastrointestinal tract. Inhalation can cause acute poisoning, the emergence of bronchial asthma. The maximum allowable concentration is 0.5 mg/m3. Staff should be protected. Store in a cool, ventilated warehouse. Keep the container sealed. It shall be stored separately from oxidants, acids and edible chemical raw materials.
Last Update：2022-01-01 09:01:46
Cobalt (Ⅲ) oxide - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| toxicity | inhalation will cause acute poisoning and bronchial asthma. The maximum allowable concentration is 0.5 mg/m3. During operation, an anti-virus mask should be worn to prevent aerosol from damaging respiratory organs. Wear dust-proof overalls and protective gloves. |
| Uses | Used as pigments and glazes and magnetic materials, can be used to make cobalt and nickel-free cobalt salts, and also used as oxidants and catalysts, etc. Used as analytical reagents, oxidants and catalysts, and also used to make cobalt and nickel-free cobalt salts used in pigments, glazes and magnetic materials. It can also be used to produce cobalt and nickel-free cobalt salts. Also used as oxidant and catalyst, etc. |
| production method | cobalt carbonate burning method uses cobalt carbonate as raw material, places it in an electric furnace, and burns at 350~370 ℃ for 4~5h under the condition of isolated air or slightly reducing atmosphere to produce high cobalt oxide. Its 2 CoCO3[△]→ Co2O3 CO ↑ CO2 ↑ |
| category | toxic substances |
| toxicity classification | low toxicity |
| acute toxicity | abdominal cavity-rat LD50: 5000 mg/kg; Subcutaneous-mouse LD50: 2060 mg/kg |
| flammability hazard characteristics | non-combustible; toxic cobalt-containing smoke from the fire site |
| storage and transportation characteristics | warehouse low temperature, ventilation, drying |
| fire extinguishing agent | water, carbon dioxide, dry powder, sand |
| occupational standard | TWA 0.05 mg (cobalt)/m3 |
Last Update：2024-04-10 22:29:15
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View History
Cobalt (Ⅲ) oxide
2-(4-苯基-1,2,3-噻二唑-5-基)异二氢吲哚啉-1,3-二酮
4-氯-5-碘-6-(三氟甲基)嘧啶-2-胺
N-(叔丁氧羰基)-D-2-(4-氯苯基)甘氨酸
2-(吡啶-4'-基)-6-溴吡啶
2-氟-4-硝基苯乙酸乙酯
N-(3-氰苯基)吡咯
2-(4-苯基-1,2,3-噻二唑-5-基)异二氢吲哚啉-1,3-二酮
4-氯-5-碘-6-(三氟甲基)嘧啶-2-胺
N-(叔丁氧羰基)-D-2-(4-氯苯基)甘氨酸
2-(吡啶-4'-基)-6-溴吡啶
2-氟-4-硝基苯乙酸乙酯
N-(3-氰苯基)吡咯
Raw Materials for Cobalt (Ⅲ) oxide
Downstream Products for Cobalt (Ⅲ) oxide
Aluminum hydroxide
Sulfuric acid, aluminum ammonium salt (2:1:1)
Potassium dichromate
Fosetyl-aluminum
Lead(II) chromate
Aluminium stearate
Sulfuric acid, aluminum ammonium salt (2:1:1)
Potassium dichromate
Fosetyl-aluminum
Lead(II) chromate
Aluminium stearate