Cobalt(II) fluoride
Cobalt (II) fluoride
CAS: 10026-17-2
Molecular Formula: CoF2
Cobalt(II) fluoride - Names and Identifiers
| Name | Cobalt (II) fluoride |
| Synonyms | COBALT FLUORIDE Cobalt fluoride Cobalt(Ⅱ)fluoride COBALT DIFLUORIDE COBALTOUS FLUORIDE Cobalt(II) fluoride COBALT(II) FLUORIDE COBALT FLUORIDE PINK Cobalt (II) fluoride cobaltfluoride(cof2) Cobalt(2+) difluoride Cobaltousfluoride,dihydrate |
| CAS | 10026-17-2 |
| EINECS | 233-061-9 |
| InChI | InChI=1/Co.2FH/h;2*1H/q+2;;/p-2 |
Cobalt(II) fluoride - Physico-chemical Properties
| Molecular Formula | CoF2 |
| Molar Mass | 96.93 |
| Density | 4.46g/mLat 25°C |
| Melting Point | 1200 °C |
| Boling Point | 1400 °C |
| Water Solubility | Soluble in water, alcohol and acetone. |
| Vapor Presure | 922mmHg at 25°C |
| Appearance | powder |
| Specific Gravity | 4.46 |
| Color | Pink |
| Exposure Limit | ACGIH: TWA 0.02 mg/m3; TWA 2.5 mg/m3NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3 |
| Merck | 14,2440 |
| Stability | hygroscopic |
| Sensitive | Hygroscopic |
| Physical and Chemical Properties | Properties: Rose red powder with rutile structure. Slightly soluble in water, heat soluble in inorganic acid. |
Cobalt(II) fluoride - Risk and Safety
| Risk Codes | R25 - Toxic if swallowed R34 - Causes burns |
| 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. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S50A - S28A - |
| UN IDs | UN 2923 8/PG 3 |
| WGK Germany | 3 |
| RTECS | GG0770000 |
| FLUKA BRAND F CODES | 21 |
| TSCA | Yes |
| HS Code | 28261990 |
| Hazard Note | Toxic |
| Hazard Class | 6.1 |
| Packing Group | III |
Cobalt(II) fluoride - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | Cobalt fluoride is the most widely used catalyst in the production of fluorocarbon products, it is difficult to solidify and form, and Cobalt fluoride is easy to deliquesce, so it has a certain effect on the yield. |
| synthesis method | 1. Prepared by the reaction of cobalt carbonate and anhydrous hydrofluoric acid; 2, it can also be prepared by the reaction of cobalt chloride and hydrofluoric acid, the chemical equation is: CoCl2 2HF → CoF2 2HCl The crystallized cobalt chloride (CoCl2 · 2H2O) is put into the glass tube, heating in a stream of HCl dehydrates it completely (200 °c), and a color change from Rose to blue indicates conversion to Anhydrous cobalt chloride. Anhydrous cobalt chloride was rapidly pulverized and then filled into a fluorite boat, which was put into an iron pipe, and the iron pipe was heated to 300 ° C. And introduced with anhydrous HF thereto until no more HCl gas was released at the end of the pipe. After completion of the reaction, nitrogen was introduced into the iron pipe to drive out the excess HF. |
| Application | Cobalt fluoride is an inorganic metal compound that can be used as a catalyst. |
| Use | 1, used as organic fluoride agent and cobalt trifluoride; 2, used as a catalyst for organic reactions |
| preparation method | crystalline cobalt chloride (CoCl2 · 2H2O) was placed in a glass tube, heating in a stream of HCl dehydrates it completely (200 °c), and a color change from Rose to blue indicates conversion to Anhydrous cobalt chloride. Anhydrous cobalt chloride was rapidly pulverized and then filled into a fluorite boat, which was put into an iron pipe, and the iron pipe was heated to 300 ° C. And introduced with anhydrous HF thereto until no more HCl gas was released at the end of the pipe. After completion of the reaction, nitrogen was introduced into the iron pipe to drive out the excess HF. |
| synthetic preparation method | crystalline cobalt chloride (CoCl2 · 2H2O) was placed in a glass tube, heating in a stream of HCl dehydrates it completely (200 °c), and a color change from Rose to blue indicates conversion to Anhydrous cobalt chloride. Anhydrous cobalt chloride was rapidly pulverized and then filled into a fluorite boat, which was put into an iron pipe, and the iron pipe was heated to 300 ° C. And introduced with anhydrous HF thereto until no more HCl gas was released at the end of the pipe. After completion of the reaction, nitrogen was introduced into the iron pipe to drive out the excess HF. |
| solubility in water (g/100ml) | grams dissolved per 100ml of water: 1.36g/20 ℃ |
| production method | crystalline cobalt chloride (CoCl2 · 2H2O) is placed in a glass tube, heating in a stream of HCl dehydrates it completely (200 °c), and a color change from Rose to blue indicates conversion to Anhydrous cobalt chloride. Anhydrous cobalt chloride was rapidly pulverized and then filled into a fluorite boat, which was put into an iron pipe, and the iron pipe was heated to 300 ° C. And introduced with anhydrous HF thereto until no more HCl gas was released at the end of the pipe. After completion of the reaction, nitrogen was introduced into the iron pipe to drive out the excess HF. |
| category | toxic substances |
| toxicity grade | high toxicity |
| Acute toxicity | oral-rat LD50: 150 mg/kg |
| flammability hazard characteristics | non-combustible, fire emission of toxic fluoride smoke |
| storage and transportation characteristics | warehouse ventilation and low-temperature drying; Separate from food storage and transportation |
| extinguishing agent | carbon dioxide, sand |
| Occupational Standard | TWA 2.5 mg (fluorine)/m3; PEL 5 mg (fluorine)/M3 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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