Trimethylsilyl chlorosulfonate
ALDRICH/359742 - 99%
Synonym: Chlorosulfonic acid trimethylsilyl ester; Trimethylsiloxysulfonyl chloride; Trimethylsilyl chlorosulfate; Trimethylsilyl chlorosulfonate; [Chlorosulfonyloxy(dimethyl)
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
| 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 |
| InChI key | QWQONZVLXJGXHV-UHFFFAOYSA |
| mp | −26 °C (lit.) |
| refractive index | n |
| 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 |
| Symbol |   GHS02,GHS05 |
| Signal word | Danger |
| Hazard statements | H226 - H314 |
| Precautionary statements | P210 - P280 - P301 + P330 + P331 - P303 + P361 + P353 - P305 + P351 + P338 |
| Hazard Codes | C |
| Risk Statements | 10-34 |
| Safety Statements | 26-36/37/39-45 |
| RIDADR | UN 2920 3(8) / PGII |
| WGK Germany | WGK 3 |
| Flash Point(F) | 107.6 °F - closed cup |
| Flash Point(C) | 42 °C - closed cup |
| 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 | n |
| UNSPSC | 12352100 |