Methyltrimethoxysilane is an important organosilane raw material with applications in various fields, including silicone rubber, silicone resins, sol-gel materials, inorganic filler modification, and functional coatings.

The CAS number for methyltrimethoxysilane is 1185-55-3; common English names include Methyltrimethoxysilane, Trimethoxy(methyl)silane, and Trimethoxymethylsilane. Its molecular formula is CH₃Si(OCH₃)₃, and its molecular weight is approximately 136.22. Public databases such as PubChem also link CAS number 1185-55-3 to the chemical entity methyltrimethoxysilane.

So, what are the primary uses of methyltrimethoxysilane?

First, it serves as a cross-linking agent for silicone rubber. MTMS exhibits high alkoxy reactivity and is suitable for use in condensation-curing silicone rubber systems.

Second, it is used in silicone resins and organosilicon materials. MTMS participates in hydrolysis-condensation reactions and serves as a key raw material for silicone resins and other organosilicon products.

Third, it is used for the surface treatment of glass fibers and inorganic fillers. MTMS can be employed to impart hydrophobic properties and modify the surfaces of materials such as mineral fillers, pigments, and glass.

Fourth, it is used in sol-gel processes and functional coatings. When used in conjunction with silicon sources like TEOS, MTMS enables the preparation of hydrophobic, superhydrophobic, and organic-inorganic hybrid coatings.

Fifth, it is used for waterproofing and surface protection. MTMS alters the wetting characteristics of inorganic material surfaces, making it valuable for the development of waterproofing, hydrophobic, and protective materials.

IOTA-20 Methyltrimethoxysilane (CAS 1185-55-3) is a colorless, transparent liquid with a purity of ≥99.0%. It serves as a cross-linking agent for silicone rubber, a raw material for glass fiber coupling and surface treatment, and a feedstock for silicone resin production.