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Trimethoxysilane (Trimethoxy silane | Trimethoxysilyl hydride | Silane, trimethoxy-)
CAS No. 2487-90-3
Molecular Formula C₃H₁₀O₃Si
Molecular Weight 122.2 g/mol
Product Properties
Colorless transparent liquid. Hydrolyzes upon exposure to moisture/air; soluble in most organic solvents. Highly flammable with a flash point of -9°C to -24°F .
| Parameter | Specification |
| :--- | :--- |
| Assay (GC) | ≥99.0% |
| Appearance | Colorless transparent liquid |
| Density (20°C) | 0.955–0.965 g/cm³ |
| Refractive Index (n²⁵D) | 1.3530–1.3630 |
| Boiling Point | 81–87°C |
| Flash Point | –9°C to –24°F |
Storage
Store in a cool, dry, well-ventilated warehouse below 30°C with relative humidity under 80%. Keep containers tightly sealed and strictly protected from moisture. Store separately from oxidizers and reducing agents. Shelf life: 6–12 months under proper conditions .
Packing
Available in 170 kg net steel drums, 850 kg IBC containers, 200 L steel drums, or ISO tanks. Custom packaging available upon request .
Application
- Synthesis Intermediate: Key raw material for functional silanes (vinyl silanes, epoxy silanes) and other organosilicon compounds .
- Hydrosilylation Reagent: Hydrogen reduction agent for hydrosilylation reactions with unsaturated bonds .
- Polymer Modification: Used in modified adhesives, sealants, coatings, and silicone-modified polymers; also for alkoxy-capped sealants and MS resins .
- Surface Treatment: Intermediate for water repellents, anti-fogging agents, and silane coupling agent derivatives .
Product Specification
| Item | Specification |
| :--- | :--- |
| Product Name | Trimethoxysilane |
| Synonyms | Trimethoxy silane, Trimethoxysilyl hydride, Silane, trimethoxy- |
| CAS No. | 2487-90-3 |
| Molecular Formula | C₃H₁₀O₃Si |
| Molecular Weight | 122.2 g/mol |
| Assay (GC) | ≥99.0% |
| Appearance | Colorless transparent liquid |
| Storage Condition | Cool, dry, ventilated area; moisture-proof; below 30°C |
| Packing | 170 kg/drum, 850 kg IBC, 200 L drum, ISO tank, or customized |
