Chlorotrimethylsilane

DescriptionChlorotrimethylsilane is a valuable reagent for the protection of the hydroxyl function in organic synthesis. It should be distilled from calciumhydride (or tributylamine) under nitrogen before use,and stored and weighed under nitrogen. Use of the reagent without purification has been reported to lead to explosions. Chlorotrimethylsilane may contain dichlorodimethylsilane as an impurity. This may be removed before distillation by very cautious treatment with a small amount of water，which hydrolyses the dichloro compound more rapidly. Excess chlorotrimethylsilane in a reaction mixture may be destroyed by the very careful addition of aqueous sodium hydrogencarbonate solution.

UsesChlorotrimethylsilane is a typical Silane Blocking Agent, which can protect or deprotect functional groups selectively. It have been used in the preparation of volatile derivatives of a wide range of compounds for GC analysis, and used for silylation and as a protection group in the process of various organic synthesis. It is used in the production of trimethylsilyl halides, pseudohalides and various organic silicon compounds. It is also used to produce hexamethyldisilane by reduction.

General DescriptionTrimethylchlorosilane appears as a colorless fuming liquid with a pungent odor. Boiling point 135° F, Flash point -18°F. Density 0.854g/cm3. The vapor and liquid may cause burns. Vapors are heavier than air.

DefinitionChEBI: Chlorotrimethylsilane is a silyl chloride consisting of a central silicon atom covalently bound to one chloro and three methyl groups. Chlorotrimethylsilane is a derivatisation agent used in gas chromatography/mass spectrometry applications. It has a role as a chromatographic reagent.