3-Mercaptopropyltrimethoxysilane
3-Mercaptopropyltrimethoxysilane is a silane coupling agent that improves corrosion resistance, adhesion, and durability in various industries.
Main Applications:
- Metal Treatment – Protects gold, silver, and copper from corrosion and oxidation while enhancing adhesion to resins.
- Rubber Industry – Improves strength and wear resistance by modifying silica, carbon black, and glass fiber.
- Textiles – Used for anti-shrink treatments to enhance fabric durability.
- Hair Care – Acts as a raw material in hair care formulations.
| Chemical name | 3-Mercaptopropyl trimethoxysilane |
| Product Category | Sulfur-Containing Silane – Silane Coupling Agent |
| Structural Formula |  |
| CAS No. | 4420-74-0 |
| EINECS | 224-588-5 |
| Molecular formula | C6H16O3SSi |
| Molecular weight | 196.34 |
| Density(25°C),g/cm3 | 1.050-1.060 |
| Boiling Point | 213-215°C |
| Flash Point | 88 °C |
| Refractive Index(nD20) | 1.4410-1.4430 |
| Appearance | Light yellow transparent liquid. |
| Dissolvability | It has special odor and is soluble in organic solvent. It is insoluble in water. |
| Uses | 1. It has sulfhydryl functional group, as metal surface rust inhibitor with special effect, used to deal with gold, silver, copper and other metal surfaces can improve its corrosion resistance, oxidation resistance and improve its adhesive properties to polymer materials. 2. Widely used in filling polymer materials, it can be applied to thermosetting and thermoplastic polymer materials, such as epoxy, eyewear, phenol sulfonate, PVC, polystyrene, polyinflammation and so on. 3. Especially in the rubber industry, the effect is particularly good, can improve its mechanical properties, improve abrasion resistance, reduce permanent deformation, applicable to NR, EPDM, SBR, polysulfide rubber, styrene-butadiene rubber, nitrile rubber, chloroprene rubber and polyurethane rubber. |
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