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Tantalum(V) chloride

CAS No.
7721-01-9
Chemical Name:
Tantalum(V) chloride
Synonyms
TaCl5;TANTALUM CHLORIDE;TANTALUM PENTACHLORIDE;2126087;um(V) chL;JACS-7721-1-9;Tantalum(Ⅴ)chloride;Pentachlorotantalum;TANTALUM(+5)CHLORIDE;TANTALUM(V) CHLORIDE
CBNumber:
CB3692046
Molecular Formula:
Cl5Ta
Molecular Weight:
358.21
MDL Number:
MFCD00011253
MOL File:
7721-01-9.mol
MSDS File:
SDS
Last updated:2023-05-15 15:06:15

Tantalum(V) chloride Properties

Melting point 221 °C
Boiling point 242 °C
Density 3.68 g/mL at 25 °C(lit.)
vapor pressure 69.9hPa at 169.3℃
Flash point 242°C
storage temp. no restrictions.
solubility Soluble in ether, carbon tetrachloride, sulfuric acid and potassium hydroxide. Slightly soluble in ethanol.
form powder
color White to pale yellow
Specific Gravity 3.68
Water Solubility Soluble in water (reacts). Also soluble in ethanol, ether and carbon tetrachloride.
Sensitive Moisture Sensitive
Merck 14,9054
InChIKey OEIMLTQPLAGXMX-UHFFFAOYSA-I
CAS DataBase Reference 7721-01-9(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII 9WXV40ZI4M
EPA Substance Registry System Tantalum chloride (TaCl5) (7721-01-9)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictogramsGHS hazard pictograms
GHS05,GHS07
Signal word  Danger
Hazard statements  H302-H314-H335
Precautionary statements  P260-P270-P280-P301+P312-P303+P361+P353-P305+P351+P338
Hazard Codes  C
Risk Statements  22-34
Safety Statements  26-36/37/39-45
RIDADR  UN 3260 8/PG 2
WGK Germany  3
RTECS  WW5600000
3-10-21
TSCA  Yes
HazardClass  8
PackingGroup  III
HS Code  28273990
Toxicity LD50 in rats (mg/kg): 75 i.p.; 1900 orally (Cochran)
NFPA 704
0
3 0

Tantalum(V) chloride price More Price(46)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 218634 Tantalum(V) chloride 99.8% trace metals basis 7721-01-9 5g $58.3 2024-03-01 Buy
Sigma-Aldrich 218634 Tantalum(V) chloride 99.8% trace metals basis 7721-01-9 25g $170 2024-03-01 Buy
Sigma-Aldrich 1.12352 Tantalum(V) chloride 99+ 7721-01-9 100g $645.65 2021-12-16 Buy
TCI Chemical T2684 Tantalum(V) Chloride Anhydrous >95.0%(T) 7721-01-9 5g $58 2024-03-01 Buy
TCI Chemical T2684 Tantalum(V) Chloride Anhydrous >95.0%(T) 7721-01-9 25g $178 2024-03-01 Buy
Product number Packaging Price Buy
218634 5g $58.3 Buy
218634 25g $170 Buy
1.12352 100g $645.65 Buy
T2684 5g $58 Buy
T2684 25g $178 Buy

Tantalum(V) chloride Chemical Properties,Uses,Production

Physical Properties

Tantalum(V) chloride, also known as tantalum pentachloride, Yellow monoclinic crystals; hygroscopic; critical temperature 494°C; critical volume 402 cm3/mol; can be sublimed without decomposition in chlorine atmosphere; reacts with water; soluble in ethanol, ether and carbon tetrachloride.

Preparation

Tantalum pentachloride is prepared by heating tantalum metal with excess chlorine:
2Ta + 5Cl2 → 2TaCl5

Reactions

Tantalum pentachloride is hydrolyzed by water to form hydrous tantalum pentoxide, Ta2O5•nH2O and hydrochloric acid:
2TaCl5 + 5H2O → Ta2O5 + 10HCl
Reaction with hydrofluoric acid yields tantalum pentafluoride:
TaCl5 + 5HF → TaF5 + 5HCl
Tantalum pentachloride forms adducts with donor solvent molecules. Also, it forms several complexes and organometallic derivatives.
Reactions with alcohols in the presence of an amine forms dinuclear alkoxides. Thus, with ethanol in the presence of diethylamine, the dinuclear tantalum ethoxide, Ta2(OC2H5)10, is obtained.
Reaction with dimethylzinc forms dichlorotrimethyl tantalum, in which three chlorine atoms are substituted with methyl groups:
2TaCl5 + 3Zn(CH3)2 → 2(CH3)3TaCl2 + 3ZnCl2
Reaction with cyclopentadienyl sodium yields bis(cyclopentadienyl) tantalum trichloride:
TaCl5 + 2C5H5 Na → (C5H5)2TaCl3 + 2NaCl

Chemical Properties

Pale-yellow, crystalline powder; highly reactive. Decomposed by moist air. Soluble in alcohol and potassium hydroxide solution. Keep well stoppered.

Physical properties

Yellow monoclinic crystals; hygroscopic; density 3.68 g/cm3; melts at 216°C; vaporizes at 239.4°C; critical temperature 494°C; critical volume 402 cm3/mol; can be sublimed without decomposition in chlorine atmosphere; reacts with water; soluble in ethanol, ether and carbon tetrachloride.

Uses

Tantalum(V) chloride is used in the preparation of catalyst for the polycyclotrimerizations of alkenediynes, chloro-aryloxide compounds and for the plasma-enhanced atomic layer deposition of tantalum nitride films. It acts as a starting material for new edge-bridged octahedral M6 cluster compounds. It is involved in the preparation of tantalum(V) oxychloride, tantalum pentoxide. It is electrophilic and behaves like a Friedel-Crafts type catalyst, similar to aluminum(III) chloride.

Production Methods

Tantalum pentachloride, TaCl5, forms strongly hydroscopic, needle-shaped white crystals. It is produced on an industrial scale in large tonnage by the chlorination of tantalum scrap or ferrotantalum with NaFeCl4 or by the reductive chlorination of natural ores or synthetic raw materials. High purity TaCl5 is hydrolyzed with steam and thus converted to Ta2O5 of the highest purity. The reduction of TaCl5 with Mg or Al was repeatedly attempted but this thermite-type process never attained any industrial application. TaCl5 is soluble in absolute alcohol, forming the corresponding alkoxides. The alkoxides as well as the chlorides are suitable products for the deposition of tantalum or tantalum pentoxide layers.

Application

Tantalum(V) chloride is an excellent water soluble crystalline Tantalum source for uses compatible with chlorides.
Used to form mixed chloro-aryloxide compounds, such as [Ta(OC6H3-2,6-i-Pr2)2Cl3]2, which form pyridine or phosphine adducts with a distortedsix-coordinate geometry.
Also used as a starting material for new edge-bridged octahedral M6 cluster compounds such as CsErTa6Cl18, for which electron and stability studies were performed.
Used in the preparation of a simple catalyst for the polycyclotrimerizations of alkenediynes.
Used for the plasma-enhanced atomic layer deposition of tantalum nitride films.

Flammability and Explosibility

Non flammable

Safety Profile

Poison by intraperitoneal route. Moderately toxic by ingestion. When heated to decomposition it emits toxic fumes of Cl-.

Purification Methods

Purify it by sublimation in a stream of Cl2. It forms colourless needles when pure (yellow when contaminated with even less than 1% of NbCl5). It is sensitive to H2O; even in conc HCl it decomposes to tantalic acid. It is soluble in EtOH. [Rolsten J Am Chem Soc 80 2952 1958, Brauer in Handbook of Preparative Inorganic Chemistry (Ed Brauer) Academic Press Vol II p 1302 1965.]

7647-01-0
7721-01-9
Synthesis of Tantalum(V) chloride from Hydrochloric acid

Tantalum(V) chloride Preparation Products And Raw materials

Raw materials

Preparation Products

Global( 139)Suppliers
Supplier Tel Email Country ProdList Advantage
Yurui (Shanghai) Chemical Co., Ltd.
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+86-0371-55170693 +86-19937530512 info@tianfuchem.com China 21703 55
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CONIER CHEM AND PHARMA LIMITED
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Fuxin Pharmaceutical
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Antai Fine Chemical Technology Co.,Limited
18503026267 info@antaichem.com CHINA 9641 58

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TANTALUM(V) CHLORIDE pictures 2022-09-22 TANTALUM(V) CHLORIDE
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US $0.00 / kg 1kg 99% 1000kg henan kanbei chemical co.,ltd
TANTALUM(+5)CHLORIDE pictures 2021-07-09 TANTALUM(+5)CHLORIDE
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US $2.00 / KG 1KG 99.9% 500 Ton/Tons per Month Hebei Xibaijie Biotechnology Co., Ltd.
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US $1.00 / KG 1KG 99% 200kg Career Henan Chemical Co
TANTALUM(V) CHLORIDE, 99.99% AMMONIUM CARBONATE EXTRA PURE, N. F., PH . FRANC. Tantalumchlorideanhydrous Tantalumchloridehighpurity TantalumVchlorideresublimedmetalsbasisyellowpowd Tantalum(Ⅴ)chloride Tantalum chloride (TaCl5) tantalumchloride(tacl5) TANTALUM(V) CHLORIDE TANTALUM(+5)CHLORIDE TANTALUM(V) CHLORIDE, 99.999%, ANHYDROUS TANTALUM (V) CHLORIDE ANHYDROUS 99+% (99.9%-TA) TANTALUM (V) CHLORIDE RESUBLIMED (99.99+%-TA)SPECTRO Tantalum(V)Chloride,Anhydrous,99.9% Tantalum(V) chloride, 99.90% Tantalum(V)chloride,resublimed(99.99+%-Ta)PURATREM tantalum(v) chloride, anhydrous, puratronic tantalum(v) chloride, puratronic Tantalum(V) chloride, 99.8% metals basis TANTALUM(V) CHLORIDE: 99.95% Tantalum(V) chloride, Puratronic(R), 99.99% (metals basis) Tantalum(V) chloride, anhydrous, Puratronic(R), 99.995% (metals basis) Tantalum(V) chloride,99.9% Pentachlorotantalum(V) Tantalum(V)pentachloride Tantalum(V) chloride, anhydrous, Puratronic, 99.995% (metals basis) Tantalum(V) chloride, Puratronic, 99.99% (metals basis) Tantalum(V) chloride/ 99+% Tantalum(V) chloride,Tantalum pentachloride Pentachlorotantalum TantaluM(V) chloride, 99.99%, (trace Metal basis) TantaluM(V) chloride, 99.9% 5GR TantaluM(V) chloride 99.99% trace Metals basis Tantalum(V) Chloride Anhydrous Tantalum(V) chloride anhydrous, powder, 99.999% trace metals basis Tantalum(V) chloride, ampuled under argon, 99.99% trace metals basis Tantalum(V) chloride, ampuled under argon, 99.8% trace metals basis Tantalum(V) Chloride, Ampouled under argon TANTALUM(V) CHLORIDE 99+ 100 G TantaluM(V) chloride 99.8% trace Metals basis JACS-7721-1-9 um(V) chL 2126087 Tantalum chloride,powder(TaCl5) TANTALUM(V) CHLORIDE ISO 9001:2015 REACH Tantalum(V) chloride, anhydrous, powder, 99.999% Tantalum(V) chloride anhydrous, powder, 99.99% Tantalum(V) chloride, anhydrous, Puratronic&trade Tantalum(V) chloride, Puratronic&trade Tantalum(V) chloride anhydrous, powder TaCl5 TANTALUM CHLORIDE TANTALUM PENTACHLORIDE Tantalum(Ⅴ)chloride,anhydrous,(99.9%-Ta) 7721-01-9 2021-01-9 772-01-9 7721/1/9