POTASSIUM HEPTAFLUOROTANTALATE(V)
- CAS NO.：16924-00-8
- Empirical Formula: F7K2Ta
- Molecular Weight: 392.13
- MDL number: MFCD00042369
- EINECS: 240-986-1
- SAFETY DATA SHEET (SDS)
- Update Date: 2023-10-17 17:11:49
What is POTASSIUM HEPTAFLUOROTANTALATE(V)?
Chemical properties
White, silky needles. Slightly soluble in cold water; quite soluble in hot water.
Chemical properties
Potassium heptafluorotantalate, K2TaF7, crystallizes in colorless, rhombic needles. It hydrolyzes in boiling water containing no excess of hydrofluoric acid. The solubility of potassium heptafluorotantalate in hydrofluoric acid decreases from 60 g/100 mL at 100 °C to 0.5 g/100 mL at room temperature. The different solubility characteristics of K2TaF7 and K2NbOF5 are the fundamental basis of the Marignac process.
The Uses of POTASSIUM HEPTAFLUOROTANTALATE(V)
Intermediate in preparation of pure tantalum.
The Uses of POTASSIUM HEPTAFLUOROTANTALATE(V)
It is an important raw material. Used in chemical research. Use as primary and secondary intermediate(Pharmaceutical Intermediates). Used in the production and preparation of tantalum powder.
Hazard
Toxic by inhalation.
Flammability and Explosibility
Non flammable
Safety Profile
Poison by ingestion and intraperitoneal routes. When heated to decomposition it emits toxic fumes of F- and K2O.
Properties of POTASSIUM HEPTAFLUOROTANTALATE(V)
| Melting point: | °Cd ec.) |
| Density | 4.56 g/mL at 25 °C(lit.) |
| vapor pressure | 0Pa at 20℃ |
| form | Powder |
| Specific Gravity | 4.56 |
| color | colorless crystals, crystalline |
| Water Solubility | Decomposes in water. Slightly soluble in hydrogen fluoride. |
| CAS DataBase Reference | 16924-00-8(CAS DataBase Reference) |
| EPA Substance Registry System | Tantalate(2-), heptafluoro-, dipotassium (16924-00-8) |
Safety information for POTASSIUM HEPTAFLUOROTANTALATE(V)
| Signal word | Warning |
| Pictogram(s) |
 Skull and Crossbones Acute Toxicity GHS06 |
| GHS Hazard Statements |
H301:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up. |
Computed Descriptors for POTASSIUM HEPTAFLUOROTANTALATE(V)
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