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Basic information Description Safety Related Supplier
Methyltriethoxysilane Basic information
Methyltriethoxysilane Chemical Properties
  • Melting point:<-40°C
  • Boiling point:141-143 °C(lit.)
  • Density 0.895 g/mL at 25 °C(lit.)
  • vapor density >1 (vs air)
  • vapor pressure 11 mm Hg ( 20 °C)
  • refractive index n20/D 1.383(lit.)
  • Flash point:75 °F
  • storage temp. Flammables area
  • form liquid
  • color colorless
  • Specific Gravity0.896
  • Water Solubility INSOLUBLE
  • Sensitive Moisture Sensitive
  • Hydrolytic Sensitivity7: reacts slowly with moisture/water
  • BRN 1742453
  • Stability:Stability Moisture-sensitive. Flammable - note low flash point. Incompatible with acids, oxidizing agents, moisture, water.
  • CAS DataBase Reference2031-67-6(CAS DataBase Reference)
  • NIST Chemistry ReferenceSilane, triethoxymethyl-(2031-67-6)
  • EPA Substance Registry SystemTriethoxymethylsilane (2031-67-6)
Safety Information
  • Risk Statements 10
  • Safety Statements 16
  • RIDADR UN 1993 3/PG 3
  • WGK Germany 3
  • RTECS VV4640000
  • 10-21
  • Autoignition Temperature220 °C
  • TSCA Yes
  • HazardClass 3
  • PackingGroup III
  • HS Code 29310095
  • ToxicityLD50 orally in Rabbit: 15700 mg/kg
Methyltriethoxysilane Usage And Synthesis
  • DescriptionMethyltriethoxysilane is an alkylalkoxysilane. It is a clear, colorless liquid with an odor characteristic of alcohols. It hydrolyzes slowly in the presence of moisture to form reactive silanols. These react further to produce oligosiloxanes and then polysiloxanes.
    As a Filler Modifier, Methyltrimethoxysilane is used mainly to render a wide range of surfaces and materials water repellent (e.g. mineral fillers, pigments, glass, cardboard). It may be used pure or in solution to treat fillers, using suitable mixing equipment. It may be necessary to first pre-treat the substrate with water and/or a catalyst. It is also used in the production of silicone resins and condensation-curing silicone rubber, used as an important component in sol-gel systems.
    As one of the most common Alkoxy Crosslinkers, Methyltrimethoxysilane has high reactivity that precedes by nucleophilic substitution usually in the presence of acid or base catalysts.
  • Chemical PropertiesColorless clear liquid
Methyltriethoxysilane Preparation Products And Raw materials
Methyltriethoxysilane(2031-67-6)Related Product Information
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