Methyltrimethoxysilane

Methyltrimethoxysilane (CAS 1185-55-3), commercially known as MTMS, is a reactive organosilane monomer used to modify surfaces, crosslink polymer networks, and improve adhesion between organic and inorganic substrates. It functions as a building block in silicone synthesis and as a coupling agent in composite and coating systems. In coatings and sealants, MTMS acts as a crosslinker and water-repellent surface modifier.

This chemical improves durability and adhesion to glass, metal, and mineral substrates. The electronics industry uses it to deposit hydrophobic, dielectric thin films on semiconductor components and circuit boards. In adhesives and elastomers, it contributes to moisture-cure systems and improves the bond strength between polymer matrices and inorganic fillers. This ensures high performance in demanding industrial environments.

Personal care formulators incorporate MTMS-derived silicones to achieve water-resistant, smooth-feel finishes in hair and skin products. It is a versatile component for creating high-quality consumer goods. Methyltrimethoxysilane is supplied as a clear, low-viscosity liquid in standard packaging ranging from drums to ISO tank containers for bulk orders. It is available in technical and high-purity grades.

Purity levels are typically at 97% or higher depending on application requirements. Buyers in electronics and specialty coatings commonly specify higher-purity lots with controlled moisture content. This ensures consistent reactivity and performance across various manufacturing processes. Our supply chain ensures that all batches meet rigorous industrial specifications for global distribution.