Vinyl Trimethoxy Silane (VTMO), with CAS No. 2768-02-7, is a high-purity organosilane coupling agent widely utilized in polymer modification, crosslinking, and adhesion enhancement applications. Its unique vinyl and methoxy functional groups enable effective bonding between organic polymers and inorganic substrates, making it indispensable in various industrial processes.
Synonyms: Trimethoxyvinylsilane, Ethenyltrimethoxysilane
Functional Equivalents:
Evonik’s Dynasylan® VTMO
Momentive’s Silquest® A-171
Dow’s Z-6300
Wacker’s XL10
Shin-Etsu’s KBM-1003
SiSiB® PC6110 by Sinosil
| Property | Value |
|---|---|
| CAS Number | 2768-02-7 |
| Molecular Formula | C₅H₁₂O₃Si |
| Molecular Weight | 148.23 g/mol |
| Appearance | Colorless transparent liquid |
| Purity (GC) | ≥98.0% |
| Boiling Point | 122–123°C |
| Flash Point | 26–28°C |
| Density (25°C) | 0.960–0.970 g/cm³ |
| Refractive Index (25°C) | 1.390–1.397 |
| Storage Temperature | <15°C; store under inert gas |
| Moisture Sensitivity | Yes |
Enhanced Adhesion: Improves bonding between polymers and inorganic materials.
Crosslinking Agent: Facilitates moisture-curing in polymers like polyethylene.
Versatile Reactivity: Vinyl group enables copolymerization; methoxy groups allow hydrolysis and condensation.
Improved Mechanical Properties: Enhances tensile strength and durability of composites.
Moisture Scavenger: Effective in moisture-curing systems to extend shelf life.
Polymer Modification: Grafting onto polyethylene, polypropylene, and other polymers.
Wire and Cable Insulation: Used in crosslinked polyethylene (XLPE) for electrical insulation.
Sealants and Adhesives: Enhances adhesion and durability in construction materials.
Coatings: Improves adhesion and weather resistance of paints and coatings.
Glass and Mineral Surface Treatment: Acts as a coupling agent to improve compatibility.
Polymer Grafting: Typically 0.5–1.5% by weight, depending on the specific application and desired properties.
Adhesion Promotion: Dosage varies based on substrate and formulation requirements.
1 kg
5 kg
25 kg
Store in a cool, dry place, preferably below 15°C.
Keep container tightly closed.
Shelf life: 12 months in unopened original packaging.
Tokyo Chemical Industry (TCI) – Vinyltrimethoxysilane Product Page
Sinosil – SiSiB® PC6110 Technical Data
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