Methyltrichlorosilane

Methyltrichlorosilane (CAS 75-79-6) is a reactive chlorosilane monomer commercially available under trade names including LS 40, KA 13, CM9000, and TSL 8003, with the shorthand CH3SiCl3. It belongs to the silicones and silicates chemical category and carries the HS code 29310095.

In polymer and elastomer production, methyltrichlorosilane acts as a trifunctional crosslinker, reacting with hydroxyl or silanol groups to form dense siloxane networks that improve mechanical and thermal resistance. In textile and construction applications, it functions as a surface modifier and adhesion promoter by covalently bonding to mineral or fibrous substrates, reducing surface energy and improving water repellency.

Methyltrichlorosilane is supplied in standard industrial grades and is subject to REACH registration requirements within the European Union. It is handled under strict safety protocols due to its reactivity with moisture. Packaging formats typically include drums and IBC containers, with documentation available to support procurement and compliance workflows.