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Chemical Name: Mercaptopropyltrimethoxysilane

CAS#: 4420-74-0

Structural Formula:      TDS

Equivalent: Dow Corning Z-6062,Momentive A-189,Evonik MTMO,SHinEtsu KBM-803,Wacker GF70

Typical Properties
Appearance: Colorless transparent liquid
Color(Pt-Co): ≤25
Molecular Weight: 196.4
Specific Gravity (ρ20°C, g/cm3): 1.057
Refractive Index (nD25): 1.440
 Boiling Point (°C): 219
Flash Point (°C): 93
Purity (%): ≥97.0


  • This product has sulfhydryl-base function groups, and has special efficiency when as antirust of metal surface. Disposing metal surface(for example, gold, silver, copper) with it , can strengthen its surface to anti-corrupt, anti-oxidant and improve the sticking property between macromolecule(for example, resin) and it.
  • In rubber industry, usually used to deal with inorganic filling, such as white carbon black, carbon black, fiberglass, mica, etc, can effectively improve mechanics performance and wear-resisting performance of the rubber.
  • In the textile industry, can be used in the shrinkproof finishing of the fabric.


25 kg, 200kg plastic or iron drum