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| CAS No.: | 10026-17-2 |
|---|---|
| Name: | Cobalt(II) fluoride |
| Molecular Structure: | |
|
|
|
| Formula: | CoF2 |
| Molecular Weight: | 96.93 |
| Synonyms: | Cobaltdifluoride; Cobalt fluoride; Cobalt(II) fluoride; Cobaltous fluoride |
| EINECS: | 233-061-9 |
| Density: | 4.43 |
| Melting Point: | 1200 ºC |
| Boiling Point: | 1400 ºC |
| Flash Point: | °C |
| Solubility: | Soluble in water, alcohol and acetone. |
| Appearance: | powder |
| Hazard Symbols: |
 
|
| Risk Codes: | R25;R34 |
| Safety: | Poison by ingestion. When heated to decomposition it emits toxic fumes of Co and F−. |
| Transport Information: | UN 2923 |
| PSA: | 0.00000 |
| LogP: | 0.84040 |
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Chemistry
Molecular Formula: CoF2
Molar mass: 96.93 g/mol
EINECS: 233-061-9
Density: 4.46 g/mL at 25 °C
Boiling Point: 19.5 °C at 760 mmHg
Vapour Pressure: 922 mmHg at 25 °C
Melting point: 1200 °C
Water solubility: Soluble
Sensitive: Hygroscopic
Appearance: Rose red crystalline powder
Solubility: Soluble in Alcohol ,Acetone (hexahydrate)
Form: Powder
Structure of Cobalt(II) fluoride (CAS NO.10026-17-2):
Uses
Cobalt(II) fluoride (CAS NO.10026-17-2) is available in most volumes in an ultra high purity composition. It can be used as a catalyst to alloy metals and also used for optical deposition, of which it tremendously improves optical quality. High purity compositions can improve optical qualities and its usefulness as a standard. The compound may be used in dental care, since fluoride is also used in dental care.
Production
The anhydrous fluoride can be extracted from this by dehydration.Its tetrahydrate is formed by dissolving cobalt(II) in hydrofluoric acid. Other synthesis can occur at higher temperatures. Cobalt(II) fluoride (CAS NO.10026-17-2) can be prepared from Cobalt(II) oxide or anhydrous Cobalt(II) chloride in a stream of hydrogen fluoride:
CoCl2 + 2HF → CoF2 + 2HCl
CoO + 2HF → CoF2 + 2H2O
To analysis this compound, Cobalt (II) fluoride can be dissolved in nitric acid and then the solution is diluted with water until appropriate concentration for AA or ICP spectrophotometry for the cobalt.
Toxicity Data With Reference
| 1. | orl-rat LD50:150 mg/kg | FCTOD7 Food and Chemical Toxicology. 20 (1982),311. |
Carcinogenicity of Cobalt(II) fluoride (CAS NO.10026-17-2) hasn't been listed as a carcinogen by NTP, IARC,ACGIH, or CA Prop 65. You can see actual entry in RTECS for complete information.
Consensus Reports
Reported in EPA TSCA Inventory.
Safety Profile
Poison by ingestion. When heated to decomposition it emits toxic fumes of Co and F−.
Hazard Codes: 
T,
C
Risk Statements:
R25 :Toxic if swallowed.
R34:Causes burns.
Safety Statements:
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.)
S50:Do not mix with ...
Standards and Recommendations
OSHA PEL: TWA 2.5 mg(F)/m3
ACGIH TLV: TWA 2.5 mg(F)/m3; BEI: 3 mg/g creatinine of fluorides in urine prior to shift; 10 mg/g creatinine of fluorides in urine at end of shift.
NIOSH REL: (Fluorides, Inorganic): 10H TWA 2.5 mg(F)/m3
Specification
Cobalt(II) fluoride ,its cas register number is 10026-17-2. It also can be called Cobalt difluoride and Cobaltous fluoride .It is a pink crystalline solid compound. It has been shown that at 500 o C fluorine will combine with cobalt producing a mixture of CoF2 and CoF3.
It is hazardous,so the first aid measures and others should be known. Such as: When on the skin: first,should flush skin with plenty of water immediately for at least 15 minutes while removing contaminated clothing. Secondly,Get medical aid. Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Then get medical aid soon. While ,it's Inhaled: Remove from exposure and move to fresh air immediately.Give artificial respiration while not breathing. When breathing is difficult, give oxygen. And as soon as to get medical aid. Then you have the ingesting of the product : Do not induce vomiting.If victim is conscious and alert, give 2-4 cupfuls of milk or water. Wash mouth out with water,and get medical aid immediately.
In addition, Cobalt(II) fluoride (CAS NO.10026-17-2) is moisture sensitive. It is not compatible with acids, glass, and you must not take it with excess heat and incompatible materials and not be exposured to moist air or water.And also prevent it to broken down into hazardous decomposition products: hydrogen fluoride gas, oxides of cobalt.