Cobalt(II) fluoride
Synonym(s):Cobaltous fluoride
- CAS NO.：10026-17-2
- Empirical Formula: CoF2
- Molecular Weight: 96.93
- MDL number: MFCD00010941
- EINECS: 233-061-9
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:25:01
What is Cobalt(II) fluoride?
Chemical properties
Rose-red crystals or powder. Soluble in cold water and hydrofluoric acid. Decomposes in hot water. Ammine complexes can be prepared from the hydrate.
Physical properties
Red tetragonal crystal; density 4.46 g/cm3; melts at 1,127°C; vaporizes around 1,400°C; sparingly soluble in water; soluble in warm mineral acids; decomposes in boiling water. Tetrahydrate is red orthogonal crystal; density 2.22 g/cm3; decomposes on heating; soluble in water; di- and trihydrates are soluble in water.
The Uses of Cobalt(II) fluoride
Cobalt(II) fluoride can be used as a catalyst to alloy metals. It is also used for optical deposition, of which it tremendously improves optical quality. The compound may be used in dental care.
The Uses of Cobalt(II) fluoride
Catalyst for organic reactions.
General Description
Violet to red solid. Sinks and mixes slowly with water.
Reactivity Profile
Cobalt(II) fluoride is a toxic, light brown crystalline material, when exposed to water Cobalt(II) fluoride forms highly corrosive hydrofluoric acid. When heated to decomposition Cobalt(II) fluoride emits toxic fumes of metallic cobalt and fluorides [Lewis, 3rd ed., 1993, p. 344].
Hazard
Highly toxic.
Health Hazard
INHALATION: Inhalation of dust may cause pulmonary symptoms. EYES: Irritation. SKIN: Skin rashes, dermatitis. INGESTION: Nausea and vomiting caused by local irritation.
LD50 oral (rat): 150 mg/kg
Safety Profile
Poison by ingestion. When heated to decomposition it emits toxic fumes of Co and F-.
Properties of Cobalt(II) fluoride
| Melting point: | 1200 °C |
| Boiling point: | 1400 °C |
| Density | 4.46 g/mL at 25 °C |
| solubility | soluble in acid solutions |
| form | powder |
| color | Pink |
| Specific Gravity | 4.46 |
| Water Solubility | Soluble in water, alcohol and acetone. |
| Sensitive | Hygroscopic |
| Merck | 14,2440 |
| Exposure limits | ACGIH: TWA 0.02 mg/m3; TWA 2.5 mg/m3 NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3 |
| Stability: | hygroscopic |
| CAS DataBase Reference | 10026-17-2(CAS DataBase Reference) |
| EPA Substance Registry System | Cobalt fluoride (CoF2) (10026-17-2) |
Safety information for Cobalt(II) fluoride
| Signal word | Danger |
| Pictogram(s) |
 Corrosion Corrosives GHS05  Skull and Crossbones Acute Toxicity GHS06 |
| GHS Hazard Statements |
H301:Acute toxicity,oral H314:Skin corrosion/irritation |
| Precautionary Statement Codes |
P260:Do not breathe dust/fume/gas/mist/vapours/spray. P270:Do not eat, drink or smoke when using this product. P280:Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Cobalt(II) fluoride
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