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: 2025-09-25 17:15:13

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.