Merck
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95541

Sigma-Aldrich

Chlorotrimethylsilane

produced by Wacker Chemie AG, Burghausen, Germany, ≥99.0% (GC)

Synonym(s):
Trimethylsilyl chloride, TMCS, Silane M3, Trimethylchlorosilane
Linear Formula:
(CH3)3SiCl
CAS Number:
Molecular Weight:
108.64
Beilstein:
1209232
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

grade

produced by Wacker Chemie AG, Burghausen, Germany

vapor density

3.7 (vs air)

vapor pressure

100 mmHg ( 25 °C)

assay

≥99.0% (GC)

form

liquid

autoignition temp.

752 °F

expl. lim.

6.4 %

refractive index

n20/D 1.387 (lit.)

bp

57 °C (lit.)

mp

−40 °C (lit.)

density

0.856 g/mL at 25 °C (lit.)

SMILES string

C[Si](C)(C)Cl

InChI

1S/C3H9ClSi/c1-5(2,3)4/h1-3H3

InChI key

IJOOHPMOJXWVHK-UHFFFAOYSA-N

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General description

Chlorotrimethylsilane is a chloro-organosilane compound mainly used for silylation reactions.

Application

Possible usages of chlorotrimethylsilane:
  • Chloromethylation of polysulfones (PSUs).
  • Activation of lithium hydride to convert it into a hydride source for the reductive silylation of carbonyl compounds.
  • Chlorotrimethylsilane/lithium bromide forms an effective reagent for the conversion of alcohols to bromides.
  • Chlorotrimethylsilane is a non-toxic alternative to mercuric chloride in activating in samarium-promoted cyclopropanation of both allylic and α-allenic alcohols.

It is also used in Fisher glycosylation.

Packaging

5 kg in stainless steel drum
500 g in Sure/Seal™

Other Notes

Silane M3
prices for bulk quantities on request

Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Acute Tox. 4 Dermal - Eye Dam. 1 - Flam. Liq. 2 - Skin Corr. 1A

Supplementary Hazards

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

-18.4 °F - closed cup

Flash Point(C)

-28 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

Science of Synthesis: Houben-Weyl Methods of Molecular Transformations, 4, 1060-1060 (2014)
A practical method for activation of commercial lithium hydride: reductive silylation of carbonyl compounds with lithium hydride and chlorotrimethylsilane.
Ohkuma T, et al.
The Journal of Organic Chemistry, 59(1), 217-221 (1994)
Modification of polysulfones by click chemistry: amphiphilic graft copolymers and their protein adsorption and cell adhesion properties.
Yilmaz G, et al.
Journal of Polymer Science Part A: Polymer Chemistry, 49(1), 110-117 (2011)
Chlorotrimethylsilane as an Activating Reagent in the Samarium-Promoted Cyclopropanation of Allylic and ?-Allenic Alcohols.
Lautens M
The Journal of Organic Chemistry, 61(6), 2210-2214 (1996)
Chlorotrimethylsilane/lithium bromide and hexamethyldisilane/pyridinium bromide perbromide: effective and selective reagents for the conversion of alkyl (cycloalkyl and aralkyl) alcohols into bromides.
Olah GA, et al.
The Journal of Organic Chemistry, 45(9), 1638-1639 (1980)

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