Tantalum pentachloride
Basic information
- CAS
7721-01-9- Standard SMILES
[Cl][Ta]([Cl])([Cl])([Cl])[Cl]- InChIKey
OEIMLTQPLAGXMX-UHFFFAOYSA-I- Molecular formula
- Cl5Ta
- Average molar mass
- 358.2 g/mol
- Monoisotopic mass
- 355.79226
Names & identifiers
- Preferred name
- Tantalum pentachloride
- IUPAC
- pentachlorotantalum
- English name
- Tantalum(V) chloride
- Molecular formula
- Cl5Ta
- Molecular weight
- 358.21
Names & synonyms
TANTALUM PENTACHLORIDETantalum chloride (TaCl5)TaCl5 cpd9WXV40ZI4MDTXSID7064780RefChem:187401DTXCID0047959231-755-67721-01-9Tantalum(V) chloridetantala(V) kloridoTantalum(V) chloride, resublimed
Show more names
TaCl5TANTALUM CHLORIDE2126087um(V) chLJACS-7721-1-9Tantalum(Ⅴ)chloridePentachlorotantalumTANTALUM(+5)CHLORIDE
MFCD00011253Tantalum Chloride AnhydrousTantalum(5+) pentachlorideTantalum(V) chloride, anhydrousTantalum(V) chloride, Puratronic?AMPERTEC? Tantalum Pentachloride TaCl5EINECS 231-755-6Tantalum (V) chloride
Database identifiers
- CAS
7721-01-9- PubChem CID
- 24394
- DTXSID
DTXSID7064780- EC Number
- 231-755-6
Properties
Computed structural properties
- Topological polar surface area
- 0 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 0
- Rotatable bonds
- 0
- Heavy atoms
- 6
- Formal charge
- 0
- Complexity
- 37.1
Experimental & physicochemical properties
Chemical ClassesMetals -> Metals, Inorganic Compounds
Physical DescriptionWhite or light yellow solid; [Merck Index] White to pale yellow crystals or powder; [Alfa Aesar MSDS]
Physicochemical properties
- Melting point
- 221 °C · 221 °C
- Boiling point
- 242 °C · 242 °C
- Density
- 3.68 g/mL · 3.68 g/mL at 25 °C(lit.)
- bulk density
- 2400 kg/m3 · 2400kg/m3
- vapor pressure
- 69.9 hPa · 69.9hPa at 169.3℃
- Flash point
- 242 °C · 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 · 3.68
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 (100%): Harmful if swallowed [Warning Acute toxicity, oral]
P260, P264, P270, P280, P301+P317, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P330, P363, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 51 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard information
Regulatory Information
Chemical: Tantalum chloride (TaCl5)
REACH registered substance: Tantalum pentachloride (EC: 231-755-6)
Tantalum (V) chloride: Does not have an individual approval but may be used under an appropriate group standard
Hazards SummaryDecomposed by moist air and water; [Merck Index] Reacts with water producing hydrochloric acid; Causes burns; Harmful by ingestion; [Alfa Aesar MSDS] See Tantalum, metal and tantalum oxide, dust. See Hydrogen chloride.
Hazard Classes and CategoriesAcute Tox. 4 (100%)
Toxicology
Adverse EffectsDermatotoxin - Skin burns.
Safety data
- F
- 3-10-21
- PPE
- Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
- wgk
- 3
- tsca
- TSCA listed
Chemistry & industry
Uses & manufacturing
General Manufacturing InformationTantalum chloride (TaCl5): ACTIVE
Applications
UsesTantalum(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.
Preparation methods
PreparationTantalum pentachloride is prepared by heating tantalum metal with excess chlorine: 2Ta + 5Cl2 → 2TaCl5
Upstream & downstream products
Downstream products
Related reactions
1 records
Compound notes
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