Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. 111-90-0, formula is C6H14O3, Name is Diethylene Glycol Monoethyl Ether. The barrier to rotation about the C–O bonds is low. The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3. HPLC of Formula: 111-90-0.
Kim, Dae Jin;Hong, Chang Seop;Yoo, Bok Ryul research published ã?Development of continuous process for the preparation of tetraethyl orthosilicate through the reaction of metallurgical silicon with ethanol in the presence of base salt catalystã? the research content is summarized as follows. In this study, tetra-Et orthosilicate (TEOS) was synthesized by the continuous reaction of metallurgical silicon (MSi) with ethanol. The results obtained herein suggest that among all the alkali metal base catalysts, diethylene glycol monoethyl ether sodium (DEGEE-Na) is the best catalyst; this is because it does not require any extra diethylene glycol monoethyl ether (DEGEE-H) as excess DEGEE-H results in its decomposition products. It is present in a solid phase at room temperature; however, it changes into a liquid phase under the reaction conditions. In contrast, DEGEE-Li was not suitable for this reaction, whereas DEGEE-K required extra DEGEE-H as a solvent because of the solidification of the reaction mixture in the reaction with MSi. When the continuous reaction was carried out by feeding ethanol into a mixture of MSi and DEGEE-Na salt catalyst (1:1 weight% ratio) at 175°C, TEOS was obtained with a yield of 70.6%. In addition to TEOS, small amounts of byproducts, such as (2-ethoxyethoxy)triethoxysilane and hexaethoxydisiloxane were obtained and unreacted ethanol was recovered and recycled. For the preparation of TEOS, activation of MSi is an important step in the reaction with ethanol. We believe that this continuous process for preparing TEOS is more economically competitive and eco-friendly method.
HPLC of Formula: 111-90-0, Diethylene glycol monoethyl ether appears as a colorless, slightly viscous liquid with a mild pleasant odor. Flash point near 190°F. Used to make soaps, dyes, and other chemicals.
Diethylene glycol monoethyl ether is a primary alcohol that is ethanol substituted by a 2-ethoxyethoxy group at position 2. It has a role as a protic solvent. It is a diether, a primary alcohol and a hydroxypolyether. It derives from a diethylene glycol., 111-90-0.
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem