Trimethoxysilane
- CAS No.
- 2487-90-3
- Chemical Name:
- Trimethoxysilane
- Synonyms
- HSi(OCH3)3;TriMethoxysilyl;trimethoxylsiloxane;DK696;AR95.0%;TRIMETHOXYSILANE;trimethoxy-silan;Silane, trimethoxy-;Trimethoxysilane,95%;Trimethoxysilyl hydride
- CBNumber:
- CB4305792
- Molecular Formula:
- C3H10O3Si
- Molecular Weight:
- 122.2
- MOL File:
- 2487-90-3.mol
- MSDS File:
- SDS
- Modify Date:
- 2024/7/12 17:58:41
| Melting point | −115 °C(lit.) |
|---|---|
| Boiling point | 81 °C(lit.) |
| Density | 0.96 g/mL at 25 °C(lit.) |
| vapor density | >1 (vs air) |
| vapor pressure | <7.2 mm Hg ( 20 °C) |
| refractive index |
n |
| Flash point | 24 °F |
| storage temp. | Flammables area |
| solubility | Chloroform (Sparingly), Methanol (Sparingly) |
| form | liquid |
| Specific Gravity | 0.860 |
| Hydrolytic Sensitivity | 7: reacts slowly with moisture/water |
| BRN | 1697990 |
| Stability | May decompose upon exposure to air or water. Incompatible with strong oxidizing agents, strong bases, strong acids. |
| InChIKey | YUYCVXFAYWRXLS-UHFFFAOYSA-N |
| CAS DataBase Reference | 2487-90-3(CAS DataBase Reference) |
| EPA Substance Registry System | Trimethoxysilane (2487-90-3) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS02,GHS06 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H225-H319-H330 | |||||||||
| Precautionary statements | P210-P304+P340+P310-P305+P351+P338 | |||||||||
| Hazard Codes | F,T+ | |||||||||
| Risk Statements | 11-26-36 | |||||||||
| Safety Statements | 16-36/37/39-45 | |||||||||
| RIDADR | UN 3384 6.1/PG 1 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | VV6750000 | |||||||||
| F | 10 | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | 6.1(a) | |||||||||
| PackingGroup | I | |||||||||
| HS Code | 29319090 | |||||||||
| NFPA 704 |
|
Trimethoxysilane Chemical Properties,Uses,Production
Chemical Properties
Colorless clear liquid
Uses
Trimethoxysilane is used as a catalyst in the hydrogenation of furfural to furfuryl alcohol.
General Description
A colorless liquid. Slightly soluble in water and denser than water. Hence floats on water. Very toxic by ingestion, inhalation or skin absorption. May also be corrosive to skin and eyes.
Air & Water Reactions
Highly flammable. Slightly soluble in water.
Reactivity Profile
Trimethoxysilane may accumulate static electricity; hazardous polymerization may occur.
Health Hazard
May cause toxic effects if inhaled or ingested/swallowed. Contact with substance may cause severe burns to skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.
Fire Hazard
Flammable/combustible material. May be ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
Safety Profile
Moderately toxic by inhalation. Mildly toxic by ingestion and skin contact. When heated to decomposition it emits acrid smoke and irritating fumes.
Purification Methods
Likely impurities are Si(OMe)4 and H2Si(OMe)2. Efficient fractionation is essential for removing these impurities [IR: Sternbach & MacDiarmid J Am Chem Soc 81 5109 1959, Heilfrich & Hausen Chem Ber 57 795 1924, Beilstein 1 IV 1266.]
Trimethoxysilane Preparation Products And Raw materials
Raw materials
Preparation Products
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