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HENGDA-M4133 Mercaptopropyltrimethoxysilane

Chemical Name: 3-Mercaptopropyltrimethoxysilane

CAS#: 4420-74-0



Structural Formula:      TDS

3-Thiopropyl trimethoxysilane

Typical Properties

Purity:≥ 97 wt. %
Appearance:Colorless transparent liquid
Refractive Index (nD25):1.440
Density:1.057 g/cm³
Boiling Point (°C):219
Molecular Weight:196.4 g/mol
Flash point:93℃


  • 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

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