TANTALUM PENTAFLUORIDE
Synonym(s):Tantalum pentafluoride
- CAS NO.：7783-71-3
- Empirical Formula: F5Ta
- Molecular Weight: 275.94
- MDL number: MFCD00042542
- EINECS: 232-022-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:26:46
What is TANTALUM PENTAFLUORIDE?
Chemical properties
white crystalline powder
The Uses of TANTALUM PENTAFLUORIDE
Tantalum pentafluoride, TaF5, is used in petrochemistry as an isomerization and alkyalation catalyst. In addition, the fluoride can be utilized as a fluorination catalyst for the production of fluorinated hydrocarbons. The pentafluoride is produced by the direct fluorination of tantalum metal or by reacting anhydrous hydrogen fluoride with the corresponding pentoxide or oxychloride in the presence of a suitable dehydrating agent. The ability of TaF5 to act as a fluoride ion acceptor in anhydrous HF has been used in the preparation of salts of the AsH4, H3S, and PH4 ions. The oxyfluorides TaOF3 and TaO2F do not find any industrial application.
The Uses of TANTALUM PENTAFLUORIDE
Friedel-Crafts catalyst.
The Uses of TANTALUM PENTAFLUORIDE
Tantalum fluoride is a catalyst used to speed up organic chemical reactions.
Safety Profile
Poison by intravenous route. Corrosive. When heated to decomposition it emits toxic fumes of F-. See also TANTALUM and FLUORIDES.
Properties of TANTALUM PENTAFLUORIDE
| Melting point: | 96.8 °C |
| Boiling point: | 229.5 °C |
| Density | 4.74 g/mL at 25 °C(lit.) |
| Flash point: | 230°C |
| solubility | soluble in H2O, ethyl ether; slightly soluble in CS2 |
| form | Powder |
| color | off-white |
| Specific Gravity | 4.740 |
| Water Solubility | Decomposes in water forming tantalum oxyfluoride. Soluble in conc. and fuming HNO{3}Soluble in carbon disulfide, carbon tetrachloride and chloroform. Slightly soluble in acetic acid and ethanol. |
| Sensitive | Moisture Sensitive |
| Hydrolytic Sensitivity | 7: reacts slowly with moisture/water |
| Merck | 14,9055 |
| Exposure limits | ACGIH: TWA 2.5 mg/m3 NIOSH: IDLH 250 mg/m3 |
| CAS DataBase Reference | 7783-71-3(CAS DataBase Reference) |
| EPA Substance Registry System | Tantalum fluoride (TaF5) (7783-71-3) |
Safety information for TANTALUM PENTAFLUORIDE
| Signal word | Danger |
| Pictogram(s) |
 Corrosion Corrosives GHS05 |
| GHS Hazard Statements |
H314:Skin corrosion/irritation |
| Precautionary Statement Codes |
P260:Do not breathe dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P330+P331:IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. 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 TANTALUM PENTAFLUORIDE
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