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Merck
CN

92361

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:
1209232
EC Number:
200-900-5
MDL number:
MFCD00000502
UNSPSC Code:
12352302
PubChem Substance ID:
57653472
NACRES:
NA.22

Key Documents

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vapor density

3.7 (vs air)

Quality Level

200

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

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

EUH014

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

Regulatory Information

危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
BCCP0149
BCCN8775
BCCN8774
BCCN3964
BCCN1514

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Science of Synthesis: Houben-Weyl Methods of Molecular Transformations, 4, 261-261 (2014)
Thermal analysis of disulfonated poly (arylene ether sulfone) plasticized with poly (ethylene glycol) for membrane formation.
Oh HJ, et al.
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.
Nature communications, 11(1), 3127-3127 (2020-06-21)
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
Yuma Komata et al.
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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