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    Qingdao Hengda New Material Technology Co., Ltd.

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    Gaizhou Hengda Chemicals Co., Ltd.

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HENGDA-E4133 - 3-Mercaptopropyltriethoxysilane

KH-580
HENGDA-E4133

3-Mercaptopropyltriethoxysilane is a chemical compound belonging to the organosilane group. Its chemical structure consists of a three-carbon chain with a thiol (-SH) group at one end and three ethoxy groups (CH₃CH₂O-) attached to a silicon atom at the other end. This structure makes it similar to 3-mercaptopropyltrimethoxysilane but with ethoxy groups (CH₃CH₂O-) instead of methoxy groups (OCH₃).
3-mercaptopropyltriethoxysilane is commonly used as a coupling agent and surface modifier in various industrial applications. Its primary function is to improve the adhesion and compatibility between organic materials (such as polymers) and inorganic materials (such as glass or metal surfaces).

  • Chemical Name:

    3-Mercaptopropyltriethoxysilane

  • CAS No.

    14814-09-6

  • Equivalent Name:

    A-1891

Typical Properties

Appearance

Colorless transparent liquid

Purity(%)≥98%

Density(ρ20), g/cm³

0.987-0.993

Molecular Weight

238.42

Refractive Index(n²⁵D)

1.440-1.446


Applications

1. The 3-Mercaptopropyltriethoxysilane has sulfhydryl-base function groups and has special efficiency when being antirust of metal surface. By using it to dispose metal surface (eg. gold, silver, copper) , can strengthen its surface to be anti-corrosive, anti-oxidant and improve the sticking property between organic polymer and the base.  

2. In the rubber industry, 3-Mercaptopropyltriethoxysilane is usually used to deal with inorganic filling, including silica, carbon black, fiberglass and mica, etc., Which can effectively improve mechanic performance and wear-resisting performance of the rubber. 

3. In textile industry, it can be used in the shrink proof finishing of fabric.


Packing

25kg, 200kg plastic or iron drum, IBC drum

HENGDA-E4133