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92361

Sigma-Aldrich

Chlorotrimethylsilane

≥98.0% (GC)

Synonym(s):

TMCS, Trimethylchlorosilane, Trimethylsilyl chloride

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About This Item

Linear Formula:
(CH3)3SiCl
CAS Number:
75-77-4
Molecular Weight:
108.64
Beilstein/REAXYS Number:
1209232
EC Number:
200-900-5
MDL number:
MFCD00000502
UNSPSC Code:
12352302
PubChem Substance ID:
57653472
NACRES:
NA.22

vapor density

3.7 (vs air)

vapor pressure

100 mmHg ( 25 °C)

assay

≥98.0% (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

Chlorotrimethylsilane has been used to silanize glass surface to make them more hydrophobic. It can be used in combination with hexamethyldisilazane for the protection of alcohols by forming trimethylsilyl ethers via silylation reaction. Also used in Fisher Glycosylation

signalword

Danger

Hazard Classifications

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

supp_hazards

EUH014

Storage Class

3 - Flammable liquids

wgk_germany

WGK 1

flash_point_f

-18.4 °F - closed cup

flash_point_c

-28 °C - closed cup

ppe

Faceshields, Gloves, Goggles

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Polymer, 55(1), 235-247 (2014)
Use of organosilicon reagents as protective groups in organic synthesis.
Lalonde M & Chan TH.
Synthesis, 1985(09), 817-845 (1985)
Yongju Kwon et al.
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Magic-sized clusters (MSCs) can be isolated as intermediates in quantum dot (QD) synthesis, and they provide pivotal clues in understanding QD growth mechanisms. We report syntheses for two families of heterogeneous-atom-incorporated InP MSCs that have chlorine or zinc atoms. All
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Chemistry, an Asian journal, 11(22), 3225-3233 (2016-10-21)
Alkoxychlorosilanes are scientifically and industrially important toward preparing silicone and silica as well as preparation of siloxane-based nanomaterials by stepwise reactions of Si-OR (R=alkyl) and Si-Cl groups. Intermolecular exchange of alkoxy and chloro groups between alkoxysilanes and chlorosilanes (functional group
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