Cobaltous chloride
Cobaltous chloride
CAS: 7646-79-9;1332-82-7
Molecular Formula: Cl2Co
Cobaltous chloride - Names and Identifiers
| Name | Cobaltous chloride |
| Synonyms | cobaltmuriate Cobalt muriate Cobalt Chloride Cobaltous chloride cobaltousdichloride Cobaltous dichloride Cobalt chloride (ous) cobaltchloride(cocl2) cobalt(2+) dichloride Cobalt chloride (CoCl2) Cobaltous chloride anhydrous Cobalt chloride 0.1 M Solution |
| CAS | 7646-79-9 1332-82-7 |
| EINECS | 231-589-4 |
| InChI | InChI=1/2ClH.Co/h2*1H;/q;;+2/p-2 |
Cobaltous chloride - Physico-chemical Properties
| Molecular Formula | Cl2Co |
| Molar Mass | 129.84 |
| Density | 3.35 |
| Melting Point | 724°C(lit.) |
| Boling Point | 1049 °C |
| Flash Point | 500°C |
| Water Solubility | soluble |
| Solubility | 585.9g/l soluble |
| Vapor Presure | 40 mm Hg ( 0 °C) |
| Appearance | beads |
| Specific Gravity | 3.356 |
| Color | Pale blue |
| Exposure Limit | ACGIH: TWA 0.02 mg/m3 |
| Merck | 14,2437 |
| PH | pH (50g/l, 25℃) : >=3.0 |
| Storage Condition | Store below +30°C. |
| Stability | hygroscopic |
| Sensitive | Hygroscopic |
| Physical and Chemical Properties | red monoclinic crystals. melting point 724°C(lit.) |
| Use | Used as analytical reagents and ammonia absorbents |
Cobaltous chloride - Risk and Safety
| Risk Codes | R49 - May cause cancer by inhalation R42/43 - May cause sensitization by inhalation and skin contact. R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R22 - Harmful if swallowed R68 - Possible risk of irreversible effects R41 - Risk of serious damage to eyes R60 - May impair fertility R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S53 - Avoid exposure - obtain special instructions before use. S23 - Do not breathe vapour. S36/37 - Wear suitable protective clothing and gloves. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S60 - This material and its container must be disposed of as hazardous waste. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S22 - Do not breathe dust. S39 - Wear eye / face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| UN IDs | UN 2923 8/PG 3 |
| WGK Germany | 2 |
| RTECS | GF9800000 |
| FLUKA BRAND F CODES | 9-21 |
| TSCA | Yes |
| HS Code | 28273930 |
| Hazard Class | 8 |
| Packing Group | III |
| Toxicity | LD50 in mice, rats (mg/kg): 360.0, 171.0 orally; 92.6, 36.9 i.p.; 23.3, 4.3 i.v. (Singh, Junnarkar) |
Cobaltous chloride - Upstream Downstream Industry
| Raw Materials | Cobalt Ammonium Bicarbonate Nitric acid Hydrochloric acid |
| Downstream Products | Streptomycin sulfate |
Cobaltous chloride - Reference Information
| sublimation point | 500°C |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Application | cobalt chloride is mainly used for the preparation of cobalt oxide and metallic cobalt, as an electronic material of alloy material, A small amount is used in the manufacture of instruments for the production of barometers, hydrometers, dry and wet indicators, etc. The ceramic industry is used as a colorant. The coating industry is used in the manufacture of paint drying agents. In animal husbandry for the configuration of compound feed. The brewing industry is used as a stabilizer for beer foam. The defense industry is used to make gas masks. Used as a catalyst in chemical reactions. Split chemistry is used for drop analysis of zinc, haploid breeding, in addition, it is also used to make hidden ink, cobalt chloride test paper (blue when dry, turn to pink when wet), color change silica gel, etc. It is also used as an absorbent for ammonia. used as analytical reagents and ammonia absorbents the gas phase co-reduction with other metal halides under the action of hydrogen to form finely divided intermetallic compounds, which can be used as structural materials or have useful thermoelectric properties, magnetic and antioxidant compounds. |
| preparation method | cobalt chloride is mainly prepared by metal cobalt method and cobalt-containing waste method, metal cobalt method is the reaction of metal cobalt with hydrochloric acid and nitric acid, after purification, precipitation, filtration, evaporation, crystallization and separation. The cobalt-containing waste material method is to react the cobalt-containing waste material with hydrochloric acid and sulfuric acid, convert it with sodium sulfide, and obtain it through washing, oxidation, separation, acidizing, washing, refining and concentrating. A preparation method of high-grade pure cobalt chloride, the steps of which are as follows: 1) reaction of metallic cobalt with hydrochloric acid: the metallic cobalt is placed in a glass beaker, and add hydrochloric acid into the electric furnace for heating reaction, the reaction temperature is controlled at 70 ℃-75 ℃, and the appropriate amount of nitric acid is added to promote the complete dissolution of metal cobalt, the amount of hydrochloric acid is controlled at 15-20% of the amount of hydrochloric acid. After the metal cobalt is completely dissolved, the temperature of the electric furnace is increased until the solution is boiled, hydrochloric acid is added, and white gas is evaporated, 2) removal of impurities: the cobalt chloride solution of step (1) is added to hydrogen peroxide to oxidize and remove iron, and the solution is adjusted to pH8-9 with ammonia water to ensure complete precipitation of iron hydroxide, stand still for 3-5 hours and filter to obtain a solution; 3) preparation of pure cobalt chloride: the solution obtained in step (2) was poured into a glass beaker, hydrochloric acid was adjusted to pH3-3.5, concentrated, the concentration temperature was 170-190 ° C., the concentration was 38-40 μbe, the heating was stopped, the crystallization was cooled, and the high-grade pure cobalt chloride crystal was obtained by centrifugal separation. |
| solubility in water (g/100ml) | grams dissolved per 100ml of water at different temperatures (℃): 43.5g/0 ℃;47.7g/10 ℃;52.9g/20 ℃;59.7g/30 ℃;69.5g/40 ℃; 93.8g/60 ℃;97.6g/80 ℃;101g/90 ℃;106g/100 ℃ |
| adverse reactions | 1. May have anorexia, Vomit, Abdominal Pain, Diarrhea and other gastrointestinal reactions, more in the early stage, the treatment process can automatically disappear. 2. Children may occasionally be poisoning and cyanosis, lethargy and death. 3. Other Adverse Reactions: skin flushing, retrosternal pain, dermatitis, tinnitus, nerve deafness, thyroid enlargement and compression of the trachea, myxedema and heart failure. |
| production method | 1. Use thionyl chloride to react with cobalt chloride hexahydrate. Put 20g of ground CoCl2 · 6H2O into a round-bottom flask, add 50ml of freshly distilled thionyl chloride at room temperature, immediately release SO2 and HCl, and wait until the foaming stops, A reflux condenser is installed on the flask, and the mixture is refluxed for 1-2H, and then the reflux pipe is modified to become a distillation unit, the excess thionyl chloride was distilled off by blowing dry nitrogen gas under reduced pressure. The flask containing the product was immediately transferred to a vacuum desiccator containing potassium hydroxide and stored therein for at least 12h to remove residual thionyl chloride. Finally, the product is transferred to a suitable container in a dry Operating box and sealed by fusion. |
| category | toxic substances |
| toxicity grade | high toxicity |
| Acute toxicity | oral-rat LD50 80 mg/kg; Intraperitoneal-mouse LD50: 49 mg/kg |
| stimulation data | Skin-human 1%/48 h positive |
| flammability hazard characteristics | non-combustible, fire toxic chloride smoke |
| storage and transportation characteristics | The warehouse is low temperature, ventilated and dry, and stored separately from food raw materials |
| extinguishing agent | water, carbon dioxide, dry powder, sand |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 02:00:11
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Raw Materials for Cobaltous chloride
Downstream Products for Cobaltous chloride