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|Section2= |Section3= }} Tetraethyl orthosilicate is the chemical compound with the formula Si(OC2H5)4. Often abbreviated TEOS, it is a colorless liquid that degrades in water. TEOS is the ethyl ester of orthosilicic acid, Si(OH)4. It is a prototypical alkoxide. TEOS is a tetrahedral molecule. Like its many analogues, TEOS is prepared by alcoholysis of silicon tetrachloride: :SiCl4 + 4 EtOH → Si(OEt)4 + 4 HCl where Et = C2H5 ==Applications== 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 zeolites.〔Kulprathipanja, Santi (2010) ''Zeolites in Industrial Separation and Catalysis'', Wiley-VCH Verlag GmbH & Co. KGaA, ISBN 3527629572.〕 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.〔Rösch, Lutz; John, Peter and Reitmeier, Rudolf (2002) "Silicon Compounds, Organic" in ''Ullmann's Encyclopedia of Industrial Chemistry'', Wiley-VCH, Weinheim. .〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tetraethyl orthosilicate」の詳細全文を読む スポンサード リンク
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