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Trimethoxysilane

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Trimethoxysilane Basic information
Trimethoxysilane Chemical Properties
  • 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 n20/D 1.358(lit.)
  • Flash point:24 °F
  • storage temp. Flammables area
  • form liquid
  • Specific Gravity0.860
  • Hydrolytic Sensitivity7: 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.
  • InChIKeyYUYCVXFAYWRXLS-UHFFFAOYSA-N
  • CAS DataBase Reference2487-90-3(CAS DataBase Reference)
  • EPA Substance Registry SystemTrimethoxysilane (2487-90-3)
Safety Information
MSDS
Trimethoxysilane Usage And Synthesis
  • Chemical PropertiesColorless clear liquid
  • General DescriptionA 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 ReactionsHighly flammable. Slightly soluble in water.
  • Reactivity ProfileTrimethoxysilane may accumulate static electricity; hazardous polymerization may occur.
  • Health HazardMay 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 HazardFlammable/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 ProfileModerately toxic by inhalation. Mildly toxic by ingestion and skin contact. When heated to decomposition it emits acrid smoke and irritating fumes.
  • Purification MethodsLikely 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(2487-90-3)Related Product Information
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