Tantalum pentafluoride
Basic information
- CAS
7783-71-3- Standard SMILES
[F][Ta]([F])([F])([F])[F]- InChIKey
YRGLXIVYESZPLQ-UHFFFAOYSA-I- Molecular formula
- F5Ta
- Average molar mass
- 275.9399 g/mol
- Monoisotopic mass
- 275.94001
Names & identifiers
- Preferred name
- Tantalum pentafluoride
- IUPAC
- pentafluorotantalum
- English name
- TANTALUM PENTAFLUORIDE
- Molecular formula
- F5Ta
- Molecular weight
- 275.94
Names & synonyms
Tantalum pentafluorideTantalum(V) fluoride7783-71-3pentafluorotantalumTantalum fluorideTantalum fluoride (TaF5)UNII-QAG1W735WOEINECS 232-022-3QAG1W735WOTaF5Tantalum(3+) fluorideTantalum(III) Fluoride
Show more names
Tantalum FluoxideTantanium Fluoridetantalumfluoride(taf5)TANTALUM(V) FLUORIDE 99%Tantalum(V)pentafluoride
Tantalum(V) fluoride, 98%SCHEMBL665023Q261542513814-17-0
Database identifiers
- CAS
7783-71-3- PubChem CID
- 82218
- EC Number
- 232-022-3
Properties
Computed structural properties
- Topological polar surface area
- 0 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 5
- Rotatable bonds
- 0
- Heavy atoms
- 6
- Formal charge
- 0
- Complexity
- 37.1
Experimental & physicochemical properties
Chemical ClassesMetals -> Metals, Inorganic Compounds
Density4.74 @25 °C
Boiling Point229.5 °C @760 [mm Hg]
Melting Point96.8 °C
Vapor Pressure100 [mm Hg] @130 °C
Physical DescriptionDeliquescent refractive solid; [Merck Index] Off-white powder; [Sigma-Aldrich MSDS]
Physicochemical properties
- Melting point
- 96.8 °C · 96.8 °C
- Boiling point
- 229.5 °C · 229.5 °C
- Density
- 4.74 g/mL · 4.74 g/mL at 25 °C(lit.)
- Flash point
- 230 °C · 230°C
- solubility
- 2 O, · soluble in H2O, ethyl ether; slightly soluble in CS2
- form
- Powder
- Specific Gravity
- 4.74 · 4.740
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification
Danger
H302 (10.6%): Harmful if swallowed [Warning Acute toxicity, oral]
P260, P261, P264, P264+P265, P270, P271, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P330, P362+P364, P363, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 47 reports by companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard information
Hazards SummaryCauses burns; Inhalation may cause corrosive injuries to upper respiratory tract and lungs; [Sigma-Aldrich MSDS] See Tantalum, metal and tantalum oxide, dust. See Tantalum pentachloride.
Hazard Classes and CategoriesAcute Tox. 4 (10.6%)
Safety & protection
Exposure Control and Personal Protection
Biological Exposure Indices (BEI) [ACGIH] - Fluorides in urine = 2 mg/L prior to shift or 3 mg/L at end of shift; (Repeated measurements recommended.)
1.0 [mg/m3]
Threshold Limit Values (TLV)2.5 [mg/m3]
Permissible Exposure Limit (PEL)2.5 [mg/m3]
Protective Action Criteria (PAC)
22 [mg/m3]
240 [mg/m3]
1500 [mg/m3]
Chemistry & industry
Uses & manufacturing
UsesUsed as a Friedel-Crafts catalyst; [Merck Index]
General Manufacturing InformationTantalum fluoride (TaF5): ACTIVE
Applications
UsesTantalum fluoride is a catalyst used to speed up organic chemical reactions.
UsesTantalum 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.
UsesFriedel-Crafts catalyst.
Upstream & downstream products
Upstream raw materials
Related reactions
0 records
No reaction records under the current filter.
Compound notes
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