3-Mercaptopropyltrimethoxysilane (MTMO)
It is a bifunctional organ silane possessing a reactive organic mercapto and a hydrolysable inorganic methoxy silyl group. The dual nature of its reactivity allows 3-Mercaptopropyltrimethoxysilane to bind chemically to both inorganic materials (e.g. glass, metals, fillers) and organic polymers (e.g. thermosets, thermoplastics, elastomers), thus functioning as an adhesion promoter, crosslinking agent, surface modifier or reactive reagent. It is a clear, colourless to light yellow liquid with a slightly mercaptan odour. It is soluble in alcohols, ketones and aliphatic or aromatic hydrocarbons. The equivalent grade of the product of different brands is LT-590, MTMO, Silsquest A-189, Dowsil Z-6062, KBM-803, Geniosil-GF70.