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| CAS No.: | 7783-71-3 |
|---|---|
| Name: | TANTALUM PENTAFLUORIDE |
| Molecular Structure: | |
|
|
|
| Formula: | F5Ta |
| Molecular Weight: | 275.94 |
| Synonyms: | Tantalumfluoride;Tantalum pentafluoride;Tantalum(V) fluoride; |
| EINECS: | 232-022-3 |
| Density: | 4.74 g/cm3 |
| Melting Point: | 96.8 °C |
| Boiling Point: | 229.5 °C |
| Flash Point: | 230 °C |
| Solubility: | Soluble in water, ether, slightly soluble in hot carbon disulfide, carbon tetrachloride and cold concentrated sulfuric acid |
| Appearance: | white crystalline powder |
| Hazard Symbols: |
 C
|
| Risk Codes: | 34 |
| Safety: | 26-27-28-36/37/39-45 |
| Transport Information: | UN 3260 8/PG 2 |
| PSA: | 0.00000 |
| LogP: | 2.10100 |
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| Conditions | Yield |
|---|---|
| In neat (no solvent) slight excess over the stoich. amt. of COF2 required; reaction mixt. heated in a stainless steel or monel cylinder at 210°C for 46 h; | A 100% B n/a |
| Conditions | Yield |
|---|---|
| 300 °C; | A 90% B n/a |
| 300 °C; | A 90% B n/a |
| 300 °C; | A 90% B n/a |
- 7783-71-3
tantalum pentafluoride
| Conditions | Yield |
|---|---|
| 2 h at 1000 °C; | 70% |
| 2 h at 1000 °C; | 70% |
| Conditions | Yield |
|---|---|
| In melt placing of mixt. of Ta with SnF2 (molar ratio SnF2:Ta=1.46) in Fluoroplast-4 ampule, closing by screwed stopper, exposition for 1.00 h at 240°C; various product ratio yields for various conditions; cooling, stirring up in water, collection, drying; | A 9.2% B n/a |
| Conditions | Yield |
|---|---|
| In neat (no solvent) at ambient temp.;; | |
| heating in quartz vessel; excess ClF3 is washed out by liq. HF; | |
| In neat (no solvent) reaction with formation of heat;; | |
| In neat (no solvent) reaction with formation of heat;; | |
| heating in quartz vessel; excess ClF3 is washed out by liq. HF; |
| Conditions | Yield |
|---|---|
| Kinetics; 473-593 K, 0.1-0.3 atm of HF; | |
| In water byproducts: H2; concd. HF;; |
| Conditions | Yield |
|---|---|
| With dihydrogen hexachloroplatinate In water byproducts: Pt; In presence of H2PtCl6 complete reaction at ambient temp. within a few minutes; H2PtCl6 is reduced to form Pt;; | A >99 B n/a |
| Conditions | Yield |
|---|---|
| in a quartz system; | |
| in monel or Ni tube at about 300 °C; sepn. of products by cooling, then purifn. by sublimation; | |
| In gaseous matrix Ta was reacted with F2 at 230-1200°C in Ar matrix; monitored by IR; |
| Conditions | Yield |
|---|---|
| 200 to 500°C; |
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Consensus Reports
Reported in EPA TSCA Inventory.
Standards and Recommendations
OSHA PEL: TWA 2.5 mg(F)/m3
ACGIH TLV: TWA 2.5 mg(F)/m3; BEI: 3 mg/g creatinine of fluorides in urine prior to shift; 10 mg/g creatinine of fluorides in urine at end of shift.
NIOSH REL: TWA 2.5 mg(F)/m3
Specification
The Tantalum fluoride with CAS registry number of 7783-71-3 is also known as Tantalum(V) fluoride. The IUPAC name is Pentafluorotantalum. It belongs to product categories of Tantalum Salts; Catalysis and Inorganic Chemistry; Chemical Synthesis; Salts; TantalumMetal and Ceramic Science. Its EINECS registry number is 232-022-3. In addition, the formula is F5Ta and the molecular weight is 275.94. This chemical is a white crystalline powder and should be stored in sealed containers in cool and dry place.
Physical properties about Tantalum fluoride are: (1)H-Bond Acceptor: 5; (2)Exact Mass: 275.940012; (3)MonoIsotopic Mass: 275.940012; (4)Heavy Atom Count: 6; (5)Complexity: 37.1; (6)Covalently-Bonded Unit Count: 1.
Preparation of Tantalum fluoride: it is prepared by reaction of tantalum(V) chloride with anhydrous hydrofluoric acid. Solid tantalum pentafluoride is obtained by condensation and filtration separation of the reaction mixture. Then the solid is sublimated in a vacuum to generate product.
TaCl5+5HF→TaF5+5HCl
Uses of Tantalum fluoride: it is used for chemical vapor deposition of tantalum and ion implantation doping. What's more, it is used as organic synthesis catalyst.
When you are using this chemical, please be cautious about it. As a chemical, it may cause burns. During using it, wear suitable protective clothing, gloves and eye/face protection. After contact with skin, take off immediately all contaminated clothing, and wash immediately. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If accident happens or you feel unwell seek medical advice immediately.
You can still convert the following datas into molecular structure:
1. Canonical SMILES: F[Ta](F)(F)(F)F
2. InChI: InChI=1S/5FH.Ta/h5*1H;/q;;;;;+5/p-5
3. InChIKey: YRGLXIVYESZPLQ-UHFFFAOYSA-I