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Tetraethyl orthosilicate

  • CAS # 78-10-4
  • Formula : (C2H5O)4Si
Brands : Tetraethyl orthosilicate Tetraethyl orthosilicate
Synonym : Organo Silane TEOS
Related categories : Specialty Chemicals, Pharmaceutical Ingredients
Boiling point : 336 °F at 760 mm Hg (USCG, 1999)
Melting point : -121.9 °F (USCG, 1999)
Solubility : Reacts with water (NIOSH, 2016)
Physical State : Ethyl silicate appears as a clear colorless liquid with a faint odor. Flash point 125°F. Less dense than water. Vapors are heavier than air.
Density : 0.933 at 68 °F (USCG, 1999)
Storage Temperature : Ethyl silicate must be stored to avoid contact with strong oxidizers (such as chlorine, bromine, and fluorine) since violent reactions occur. Before entering confined space where this chemical may be present, check to make sure that an explosive concentration does not exist. Store in tightly closed containers in a cool, well-ventilated area away from water. Sources of ignition, such as smoking and open flames, are prohibited where ethyl silicate is handled, used, or stored. Metal containers involving the transfer of five gallons or more of ethyl silicate should be grounded and bonded. Drums must be equipped with self-closing valves, pressure vacuum bungs, and flame arresters. Use only non-sparking tools and equipment, especially when opening and closing containers of ethyl silicate.
Symbol : Tetraethyl orthosilicate
Lead Time: available in 6 weeks
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Product Information

Tetraethyl Orthosilicate is widely used in the pharmaceutical industry and specially for application in Topical products (i.e. Transdermal patches) as a cross-linking agent. Aceto supplies sourced Tetraethyl Orthosilicate as well as produced material through our Finar brand. Aceto also sources Tetraethyl orthosilicate (marketed as Organo Silane TEOS-40) for industrial applications used specifically for adhesives and sealants.

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