3-Mercaptopropyltrimethoxysilane Crosile-189
Silane Coupling Agent
3- Mercaptopropyltrimethoxy silane
Type: Crosile-189
CAS NO.: 4420-74-0
EINECS No.: 224-588-5
Chemical Name: C6H16O3SSi
Property:
1. A colorless clear liquid with light typical odor
2. Soluble easily in ethyl alcohol, acetone,benzene, toluene etc.
3. Insoluble in water.
4. Stable under normal temperature and pressure, colorless and transparent liquid, sensitive to air and humidity, it is a sulfur-containing silane with a foul smell.
5. Soluble in acetone, benzene, gasoline and other organic solvents, insoluble in water.
Technical Data Sheet
Product Name:
Silane Coupling Agent Mercaptopropyltrimethoxysilane
Equivalent Type:
A-189(Momentive), Z-6062(Dow Corning), 590 (Wacker), MTMO (Evonik), 3-Mercaptopropyltrimethoxy silane
Physical Properties:
3- Mercaptopropyltrimethoxysilane 189 is a colorless clear liquid with light typical odor and soluble easily in ethyl alcohol, acetone,benzene, toluene etc. Insoluble in water.
Stable under normal temperature and pressure, colorless and transparent liquid, sensitive to air and humidity, it is a sulfur-containing silane with a foul smell. Soluble in acetone, benzene, gasoline and other organic solvents, insoluble in water.
Specification:
Test Item | Target Values(Spec.Limits) |
Crosile-1891 Content | ≥ 97.0% |
Alcohol Content | ≤ 2.0% |
Specific Gravity (25 ℃) | 1.020-1.060 |
Refractive Index (25 ℃) | 1.440-1.445 |
Application Range
Mercaptopropyltrimethoxysilane Crosile-189 has special effect on the metal surface rust inhibitor.
With its thiol functional group, it can strengthen the surface corrosion resistance and oxidation resistance and increase the adhesion with resin, when face gold, silver and copper surface processing.
In rubber industry, it’s been used in dispose inorganic filler such as white carbon black, carbon black, glass fiber, mica, which can enhance rubber mechanical property and abrasion resistance.
It’s also available for shrink resistant finish in spinning .
Package and storage
- Package: 25kg or 200 kg in plastic drumsand 1000kg/IBC.
- Storage: Kept in a low temperature, dry and ventilated place, avoid direct sunlight.
- Shelf life: One year in ventilating, cool and dry area.
1.Package:25kg or 200kg, 1000 kg/IBC.
2.Storage: Kept in a low temperature, dry and ventilated place, avoid direct sunlight.
3.Shelf life: One year in ventilating, cool and dry area.

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