Tantalum(V) chloride, anhydrous, Puratronic®

• Catalog No.: 43731
• CAS Number: 7721-01-9
• M. F.: Cl5Ta
• M. W.: 358.2129
• Purity: 99.995% (metals basis)

SYNONYMS

• Title: 无水五氯化钽(V), Puratronic®
• IUPAC name: tantalum(5+) ion pentachloride
• IUPAC Traditional name: tantalum(5+) ion pentachloride
• Synonyms: Tantalum pentachloride

DATABASE IDS

• EC Number: 231-755-6
• Merck Index: 149054
• MDL Number: MFCD00011253
• CAS Number: 7721-01-9

PROPERTIES

• Purity: 99.995% (metals basis)
• Apperance: Powder, Ampouled under argon
• Boiling Point: 242°C
• Density: 3.68
• Melting Point: 216°C
• GHS Hazard statements: H311-H302-H332-H314-H318
• European Hazard Symbols: X
• European Hazard Symbols: Corrosive (C)
• GHS Precautionary statements: P260-P303+P361+P353-P305+P351+P338-P361-P405-P501A
• Risk Statements: 20/21/22-34
• RTECS: WW5600000
• Safety Statements: 20-26-36/37/39-45-60
• Storage Warning: Moisture Sensitive
• TSCA Listed: 是
• Hazard Class: 8
• UN Number: UN3260
• Packing Group: III

REFERENCES

• In combination with silica, is a useful acid catalyst for, e.g. acetylation of alcohols: Tetrahedron Lett., 39, 3263 (1998), tetrahydropyranylation of alcohols and dithioacetalization of aldehydes: Tetrahedron, 53, 14997 (1997).
• In the presence of Zn metal, low-valent Ta complexes are formed with alkynes which react with carbonyl compounds to form (E)-allylic alcohols: J. Org. Chem., 55, 1707 (1990); 57, 321 (1992). Similarly, regioselective additions to alkenes can also be effected: J. Org. Chem., 59, 5852 (1994). With allylic alcohols, 1,4-dienes are formed: Chem. Lett., 315 (1995).