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TANTALUM(V) CHLORIDE

Physical Properties Preparation Reactions
TANTALUM(V) CHLORIDE
TANTALUM(V) CHLORIDE structure
CAS No.
7721-01-9
Chemical Name:
TANTALUM(V) CHLORIDE
Synonyms
TaCl5;TANTALUM CHLORIDE;Tantalum(Ⅴ)chloride;Pentachlorotantalum;TANTALUM(+5)CHLORIDE;TANTALUM(V) CHLORIDE;TANTALUM PENTACHLORIDE;Pentachlorotantalum(V);tantalumchloride(tacl5);Tantalum(V)pentachloride
CBNumber:
CB3692046
Molecular Formula:
Cl5Ta
Formula Weight:
358.21
MOL File:
7721-01-9.mol

TANTALUM(V) CHLORIDE Properties

Melting point:
221 °C
Boiling point:
242 °C
Density 
3.68 g/mL at 25 °C(lit.)
Flash point:
242°C
storage temp. 
Storage temperature: 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)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
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)
Symbol(GHS):
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310
Precautionary statements:
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P310 Immediately call a POISON CENTER or doctor/physician.
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.
P405 Store locked up.

TANTALUM(V) CHLORIDE price More Price(26)

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 $44.7 2018-11-13 Buy
Sigma-Aldrich 218634 Tantalum(V) chloride 99.8% trace metals basis 7721-01-9 25g $129 2018-11-13 Buy
TCI Chemical T2684 Tantalum(V) Chloride Anhydrous >95.0%(T) 7721-01-9 5g $54 2018-11-22 Buy
TCI Chemical T2684 Tantalum(V) Chloride Anhydrous >95.0%(T) 7721-01-9 25g $169 2018-11-22 Buy
Alfa Aesar 010880 Tantalum(V) chloride, Puratronic? 99.99% (metals basis) 7721-01-9 5g $36.7 2018-11-20 Buy

TANTALUM(V) CHLORIDE Chemical Properties,Uses,Production

Physical Properties

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.

Uses

Chlorination of organic substances, intermediate, production of pure metal.

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.]

TANTALUM(V) CHLORIDE Preparation Products And Raw materials

Raw materials

Preparation Products


TANTALUM(V) CHLORIDE Suppliers

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Hubei Jusheng Technology Co.,Ltd.
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Alfa Aesar 400-610-6006; 021-67582000
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TCI (Shanghai) Development Co., Ltd. 021-67121386 / 800-988-0390
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Energy Chemical 021-58432009 / 400-005-6266
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