Chlorotrimethylsilane CAS 75-77-4 (CH₃)₃SiCl

What is Chlorotrimethylsilane

Chlorotrimethylsilane is an organosilicon compound with the molecular formula  (CH₃)₃SiCl , also known as TMSCL.

Chlorotrimethylsilane is a colorless liquid with low boiling and flash points, insoluble in water but soluble in organic solvents.

Trimethylchlorosilane is an important organosilicon compound that is widely used in industry and scientific research.

TMSCL has high stability and activity, and can play the role of catalyst, reducing agent and functionalization reagent in chemical reactions.

It is also an important surface treatment agent that can improve the wettability, adhesion and heat resistance of materials.

Application of Chlorotrimethylsilane

1. Organic synthesis: chlorotrimethylsilane is an important organosilicon reagent, often used as nucleophilic reagent, condensation reagent, etc. in organic synthesis, and can be involved in etherification, silylation, silylation and other reactions for the synthesis of various organosilicon compounds.

2. Surface modification: Trimethylchlorosilane can be used for surface modification treatment. Through the action of silane coupling agent, a silicon-based coating can be formed on the surface of the material to improve the abrasion resistance, corrosion resistance and heat resistance of the material.

3. Silicone Rubber Preparation: Trimethylchlorosilane is an important crosslinking agent for silicone rubber, which can react with hydroxysilane or hydroxysilane prepolymer to form a crosslinked structure, so as to prepare silicone rubber and its products.

4. Chemical intermediates: Trimethylchlorosilane can also be used as chemical intermediates, which have certain applications in the fields of medicine, pesticides, dyes and so on.

In general, chlorotrimethylsilane has a variety of uses, mainly used in organic synthesis, surface modification, silicone rubber preparation and other fields, is an important organosilicon compound.

The upstream products of trimethylchlorosilane mainly include silicon chloride and methyl chloride, while the downstream products mainly include organosilicon compounds, silicone rubber, silicone resin, silicone and so on.

There are two main production methods for Trimethylchlorosilane

One-step synthesis method: Chloromethane and silica powder are directly synthesized under the catalysis of cuprous chloride to produce a mixture of methylchlorosilane, which can be purified by distillation to obtain trimethylchlorosilane and other monomers. This method has the advantages of high production efficiency and mild reaction conditions, and is a commonly used production method in industry.

Other methods: It can also be produced by the reaction between tetramethylsilane and acetyl chloride in the presence of aluminum trichloride; or it can be produced by the transformation of trimethylsilane ether as raw material; or it can be produced by the reaction of dichloromethane and hexamethyldisiloxane as raw material.

Safety and Environmental Protection of TMCS

Toxicity: Trimethylsilyl Chloride is a toxic compound, irritating to skin and eyes. Protective clothing, gloves, glasses and other protective equipment should be worn during operation and good ventilation should be maintained.

Flammability: Trimethylchlorosilane is flammable and should be kept away from fire and heat sources and stored in a cool and ventilated place. There is a danger of combustion when exposed to open flame, high heat or harmful combustion products such as carbon monoxide and carbon dioxide.

Environmental protection measures: Trimethylsilyl Chloride may cause some pollution to the environment during production and use. For example, it may volatilize into the air and pollute the atmospheric environment; it may also remain in the soil and water bodies, causing potential harm to the ecological environment. Therefore, effective environmental protection measures should be taken when using trimethylchlorosilane to reduce its impact on the environment.