TEOS is mainly used as a crosslinking agent in silicone polymers and as a precursor to silicon dioxide in the semiconductor industry.
Silane Coupling Agent TEOS
Synonym name:Ethyl silicate; Tetraethoxysilane; TEOS
Tetraethyl orthosilicate, formally named tetraethoxysilane and abbreviated TEOS
Application：TEOS is mainly used as a crosslinking agent in silicone polymers and as a precursor to silicon dioxide in the semiconductor industry. TEOS is also used as the silica source for synthesis of some zeolites. Other applications include coatings for carpets and other objects. TEOS is used in the production of aerogel. These applications exploit the reactivity of the Si-OR bonds. TEOS has historically been used as an additive to alcohol based rocket fuels to decrease the heat flux to the chamber wall of regeneratively cooled engines by over 50%
Ethyl orthosilicate is a colorless liquid with a slight odor. Melting point -77 ° C, boiling point 165.5 ° C. Slightly soluble in water, soluble in ethanol and ether. After turbid gradually in humid air and standing, precipitated silicic acid precipitated. It is stable in the absence of moisture and does not decompose during distillation. It is miscible with ethanol and ether, slightly soluble in benzene, almost insoluble in water, but gradually decomposed into silicon oxide by water. combustible. It is anesthetic at high concentrations. Irritating.
|CAS No||78-10-4||11099-06-2 or 68412-37-3|
|Color||≤30 APHA max.||≤30 APHA max.||≤30 APHA max.|
|Specific Gravity (25℃):||0.93 – 0.96g/ml||0.93 – 0.96g/ml||1.05 –1.07 g/ml|
|Fe Content||≤5PPm by wt. as FeCl2||≤5PPm by wt. as FeCl2||≤5PPm by wt. as FeCl2|
|Acidity:||≤50PPm. (as HCl)||≤50PPm. (as HCl)||≤50PPm. (as HCl)|
1. Package: 200kg in plastic drum.
2. Storage: Kept in a low temperature, dry and ventilated place, avoid direct sunlight.