Cas: 14814-09-6
(3-Mercaptopropyl)trimethoxysilane (KH-590) is a bifunctional silane coupling agent that enables robust bonding between inorganic substrates (e.g., metals, glass fibers) and organic polymers (e.g., rubber, resins). Its unique mercapto group facilitates cross-linking in sulfur-cured systems, while hydrolyzable methoxy groups anchor to mineral surfaces. Widely applied in tire manufacturing, adhesives, and anti-corrosion coatings, it requires strict moisture control during storage due to sensitivity to hydrolysis.
Physical and chemical properties
| Property | Value/Description |
|---|---|
| Chemical Formula | C₆H₁₆O₃SSi |
| Molecular Weight | 196.34 g/mol |
| Appearance | Colorless to pale yellow clear liquid |
| Odor | Characteristic mercaptan-like odor (pungent, sulfurous) |
| Density (20°C) | 1.057 g/cm³ |
| Refractive Index (nD²⁵) | 1.440 - 1.445 |
| Boiling Point | 212°C (at 760 mmHg) |
| Flash Point | 96°C (Tag closed cup) |
| Melting Point | < -50°C |
| Vapor Pressure (20°C) | 0.03 mmHg |
Application
Applications: Coupling agent for rubber/silica composites, surface modifier for nanoparticles, adhesion promoter in coatings.
Packaging and storage
1.Primary Containers
Material: High-density polyethylene (HDPE) or fluorinated HDPE
Types:
Amber glass bottles (for laboratory/reagent grades) with PTFE-lined caps
HDPE jerricans (5-25 L)
Epoxy-phenolic resin-lined steel drums (180-200 kg)
Sealing: Nitrogen headspace + tamper-evident closures to prevent moisture ingress and oxidation.
2.Bulk Packaging
Stainless steel isotanks (IBCs, ~1,000 L) with inert gas padding (N₂/Ar).
Double-walled HDPE composite drums (200 kg) for enhanced moisture barrier.
3.Critical Labeling Requirements
Hazard Symbols: Flammable liquid (🔥), Corrosive (⚠️), Health hazard (☠️).
Text Warnings:
"MOISTURE-SENSITIVE: Keep container tightly sealed under inert atmosphere"
"FLAMMABLE: Keep away from heat/sparks/open flames"
"CONTAINS SULFHYDRYL GROUP: May oxidize upon air exposure"
For more information on Safety Data Sheets (MSDS), Product Safety Data Sheets, and Product Inspection Reports, please contact us.
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Our Market
Hocon International Co., Ltd. was established in 2015, is a manufacturer specializing in silicone products. Its product varieties include: organosilanes, silicone resin, silicone oil, modified silicone oil and their deep-processing products, the application fields of the products involve daily ...
