トリエトキシシラン 化学特性,用途語,生産方法
外観
無色～ほとんど無色透明液体
説明
Triethoxysilane is an organosilicon compound with the formula HSi(OC2H5)3. It is a colourless liquid used in precious metal-catalysed hydrosilylation reactions. The resulting triethoxysilyl groups are often valued for attachment to silica surfaces.Compared to most compounds with Si-H bonds, triethoxysilane exhibits relatively low reactivity. Like most silyl ethers, triethoxysilane is susceptible to hydrolysis. As reducing agent, triethoxysilane can for example be used in reduction of amides, reduction of carbonyl compounds in the presence of cobalt(II) chloride as catalyst, Cu-catalyzed reductive hydroxymethylation of styrenes, and Rh-catalyzed hydrodediazoniation.
化学的特性
Colorless, clear liquid
物理的性質
bp 134–135 °C; d 0.89 g cm?3.
使用
Triethoxysilane is useful reagent for the hydrosilylation of carbon–carbon multiple
bonds; reducing agent for carbonyl groups
一般的な説明
Liquid. Used as a reducing agent.
空気と水の反応
May become pyrophoric, by generation of silane
反応プロフィール
Triethoxysilane has been involved in cases where Triethoxysilane has disproportionated, generating silane (SiH4) which has a history of being pyrophoric.
健康ハザード
Toxicity is similar to silanes. Silanes are moderately irritating to skin, eyes, and mucous membranes. Silane compounds are toxic.
火災危険
When heated to decomposition, Triethoxysilane emits acrid smoke and fumes.
安全性プロファイル
Poison by intravenous route.Moderately toxic by inhalation. Flammable liquid. Whenheated to decomposition it emits acrid smoke andirritating fumes.
純化方法
Fractionate it using a column packed with glass helices of ca 15 theoretical plates in an inert atmosphere. Store it in aliquots in sealed ampoules because it is sensitive to moisture. [Spauschus et al. J Am Chem Soc 72 1377 1950, MacKenzie et al. J Am Chem Soc 72 2032 1950, Havill et al. J Org Chem 13 280 1948, Beilstein 1 IV 1359.]
トリエトキシシラン 上流と下流の製品情報
原材料
準備製品