Skip to Content
Merck
CN

Key Documents

View All Documentation

359742

Trimethylsilyl chlorosulfonate

99%

Synonym(s):

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

Sign In to View Organizational & Contract Pricing.

Select a Size

Change View

About This Item

Linear Formula:
ClSO3Si(CH3)3
CAS Number:
4353-77-9
Molecular Weight:
188.71
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
24862103
EC Number:
224-425-8
Beilstein/REAXYS Number:
1763675
MDL number:
MFCD00040471
Assay:
99%
Form:
liquid
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

Quality Segment

assay

99%

form

liquid

refractive index

n20/D 1.424 (lit.)

bp

168-169 °C (lit.), 62-64 °C/10 mmHg (lit.)

mp

−26 °C (lit.)

density

1.225 g/mL at 25 °C (lit.)

SMILES string

C[Si](C)(C)OS(Cl)(=O)=O

InChI

1S/C3H9ClO3SSi/c1-9(2,3)7-8(4,5)6/h1-3H3

InChI key

QWQONZVLXJGXHV-UHFFFAOYSA-N

General description

Trimethylsilyl chlorosulfonate is commonly employed as sulfonating agent.

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

Pictograms

FlameCorrosion
GHS02,GHS05

Signal Word

Danger

Hazard Codes

H226,H314

Hazard Classifications

Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1B

Storage Class

3 - Flammable liquids

WGK

WGK 3

Flash Point (°F)

107.6 °F - closed cup

Flash Point (°C)

42 °C - closed cup

PPE (personal protective equipment)

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library