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Ethyl silicate(TEOS)

Name:Ethyl silicate;


Properties: colorless or light yellow transparent liquid with olfactory smell similar to ether;

Molecular formula:C8H20O4Si;

Boiling point:(℃)165.5;

Melting point:(℃)-77;

Flash point ℃(Closed) 46;

The ignition point:(℃) 260;

Density:g/cm3 0.93;

Refractive index:nD20 1.3928;

Steam pressure:kPa(℃)0.13(20);

Solubility: can be dissolved with ethanol, acetone and other organic solvents, can react with water to produce silica sol, ethanol, and release heat;

Stability: easy to hydrolyze;



Molecular weight:208.33;


  1. Make all kinds of alloy castings;
  2. Manufacture of refractory adhesives, permanent paints;
  3. Used as a phenolic – butadiene nitrile adhesive;
  4. Combined with dibutyltin dilaurate as a crosslinker for silicone rubber.
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