Chlorotrimethylsilane 75-77-4

Availability: In Stock
CAS NO.: 75-77-4
M.F.: C3H9ClSi
M.W: 108.6421



Product name Chlorotrimethylsilane
Other name TMCS
CAS NO. 75-77-4
M.F. C3H9ClSi
M.W 108.6421
Structure 4
EINECS 200-900-5
Chemical Properties
Melting point −40 °C(lit.)
Density 1.257 g/mL at 25 °C
Boiling point 57 °C(lit.)
Flash point 27.8°C
Safety information
UN NO. 1298
Package classification II
Hazard classification 3(8)
Storage Stable. Highly flammable – note low flash point. Reacts violently with water. Incompatible with water, moisture, strong oxidizing agents, strong acids, strong bases, aldehydes, alcohols, amines, esters, ketones.
Store in cool and dry place.
Net weight 170kg/drum,80drums in 20″fcl.(13.6ton/fcl)
Gross weight 189kg
Package size φ571.5 * H890MM


Product name Chlorotrimethylsilane (TMCS) CAS NO 75-77-4
Description Clear colourless to light yellow flammable&highly corrosive liquid fumes on exposure to aire Conform
Identification In the test assay, the retention time of the test corresponds to that obtained with standard preparation of TMCS W.S. 3.0 min. ( in the test assay, the retention time of the test corresponds to that obtained with standard preparation of TMCS W.S.)
Hexymethyl dislloxane(hmdo) Nmt 2.0% 0.29%
Assay NLT 98.0% 98.89%


Chlorotrimethylsilane is used as intermediates, hydrophobic agents and reagents for analysis of silicone oil. It is also can used for gas chromatography derivatization reagent for silanization of hydroxyl, amino and carboxyl groups without steric hindrance. It is also used in organic synthesis.

Chlorotrimethylsilane is Silanization reagent for hydroxyl, amino and carbonyl groups. For the preparation of its volatile derivatives for gas chromatography. Ketone alcohol condensation of esters, condensation cyclization of alpha, omega 12 esters, acylation of malonate esters. Iso-like esters are made from carbamic acid vinegar. Enol silane ether is prepared from carbonyl compounds. Enamine from ketone. Reduction silanization of aromatic rings, etc.

Chlorotrimethylsilane is Trimethyl chlorosilane is mainly used to synthesize silane ether compounds and vinyl silane, and can also be used as the protective group of hydroxyl compounds such as alcohols, in addition, it is also used in the de-protective reaction of tertiary butyl oxycarbonyl (BOC).

Chlorotrimethylsilane can be used to produce various organosilicon compounds and is the main raw material for producing hexamethyldisilazane and hexamethyldisiloxane.

It can be used in the production of various organosilicone compounds and is the main raw material for the production of hexamethyldisilazane and hexamethyldisiloxane

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