336556

Bis(triphenylsilyl) chromate

96%

• Synonym(s): Bis(triphenylsilyl) ester chromic acid
• Linear Formula: [(C₆H₅)₃SiO]₂CrO₂
• CAS Number: 1624-02-8
• Molecular Weight: 634.79
• EC Number: 216-612-8
• MDL number: MFCD01736354
• UNSPSC Code: 12352002
• PubChem Substance ID: 24860393
• NACRES: NA.22

Properties

• assay: 96%
• reaction suitability: reagent type: oxidant
• mp: 159 °C (dec.) (lit.)
• SMILES string: O=[Cr](=O)(O[Si](c1ccccc1)(c2ccccc2)c3ccccc3)O[Si](c4ccccc4)(c5ccccc5)c6ccccc6
• InChI: 1S/2C18H15OSi.Cr.2O/c2*19-20(16-10-4-1-5-11-16,17-12-6-2-7-13-17)18-14-8-3-9-15-18;;;/h2*1-15H;;;/q2*-1;+2;;
• InChI key: AQLZCGLPNYEIDH-UHFFFAOYSA-N

Description

application

Bis(triphenylsilyl) chromate [(Ph₃SiO)₂] can be used as a catalyst:

• For ethylene polymerization.
• For the conversion of secondary benzylic and allylic trimethylsilyl ethers to ketones by oxidation reaction using tert-butyl hydroperoxide.

It can also be used to prepare supported catalysts with silica gel or montmorillonite K-10. These catalysts can be used in the oxidation of alcohols to corresponding carbonyl compounds.

Reactant for the XPS and XRD characterization of chromium-silica catalysts

Silyl chromate catalyst for

• Olefin polymerization and ethylene polymerization
• Benzylic oxidations used as a phase transfer catalyst

Safety Information

• pictograms: GHS06,GHS08,GHS09
• signalword: Danger
• hcodes: H311,H317,H350,H410
• pcodes: P202 - P261 - P273 - P280 - P302 + P352 + P312 - P308 + P313
• Hazard Classifications: Acute Tox. 3 Dermal - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B - Skin Sens. 1
• Storage Class: 6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• wgk_germany: WGK 2
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges