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Trimethylsilyl chlorosulfonate

ALDRICH/359742 - 99%

Synonym: Chlorosulfonic acid trimethylsilyl ester; Trimethylsiloxysulfonyl chloride; Trimethylsilyl chlorosulfate; Trimethylsilyl chlorosulfonate; [Chlorosulfonyloxy(dimethyl)silyl]methane

CAS Number: 4353-77-9
Empirical Formula (Hill Notation): C3H9ClO3SSi
Molecular Weight: 188.71
EC Number: 224-425-8
MDL Number: MFCD00040471
Linear Formula: ClSO3Si(CH3)3
Product Type: Chemical
Catalog Number PKG Qty. Price Quantity
45-359742-50ML 50 mL
 $112.00
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assay 99%
bp 168-169 °C (lit.)
  62-64 °C/10 mmHg (lit.)
density 1.225 g/mL at 25 °C (lit.)
form liquid
InChI 1S/C3H9ClO3SSi/c1-9(2,3)7-8(4,5)6/h1-3H3
InChI key QWQONZVLXJGXHV-UHFFFAOYSA-N
mp −26 °C (lit.)
Quality Level 200 
refractive index n20/D 1.424 (lit.)
SMILES string C[Si](C)(C)OS(Cl)(=O)=O
Application: Trimethylsilyl chlorosulfonate may be used:
• in the sulfonation of small organic molecules
• in the synthesis of sulfonated polysulfone
• as sulfonating agent in the preparation of nano-structured organic-inorganic membranes for proton exchange membrane fuel cells (PEMFC) based on methacrylate and epoxy polymeric structures
• in the preparation of sulfonated polysulfone (sPS)/titanium dioxide (TiO2) composite membranes for use in PEMFCs
• in the preparation of iodosobenzene sulfate, required for the synthesis of cyclic sulfates
General description: Trimethylsilyl chlorosulfonate is commonly employed as sulfonating agent.
Packaging: 50 mL in glass bottle
Purity 99%
bp 168-169 °C (lit.); 62-64 °C/10 mmHg (lit.)
mp −26 °C (lit.)
Density 1.225 g/mL at 25 °C (lit.)
Refractive Index n20/D 1.424 (lit.)
UNSPSC 12352100

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