Methyltrichlorosilane

Methyltrichlorosilane (CAS 75-79-6), commonly abbreviated as MTS, is a reactive chlorosilane monomer used as a fundamental building block in silicone polymer synthesis and surface treatment chemistry.

Where is Methyltrichlorosilane used?

• Silicone manufacturing: key precursor for methylsilicone resins, fluids, and elastomers through controlled hydrolysis and condensation reactions
• Electronics: chemical vapor deposition of silicon carbide coatings and surface passivation agent on semiconductor substrates
• Building and construction: water repellency on mineral substrates such as concrete, stone, and masonry through covalent bonding to surface hydroxyl groups
• Textile and paper processing: release coatings and hydrophobic finishes on fiber and sheet materials
• It functions as a trifunctional crosslinker and surface modifier, enabling the formation of durable siloxane networks.

Good to know: Buyers should confirm moisture-controlled packaging requirements, as the product reacts with atmospheric humidity during storage.

Commercial specifications

• Purity levels are typically at 98% or higher as standard for industrial applications.
• Colorless, fuming liquid in standard industrial packaging including drums and ISO tank containers for bulk procurement.