ethanol mass spectrum

Mol Weight. Exact Mass. Copyright © 1980, 1981-2020 John Wiley & Sons, Inc. Copyright. An alternative notation is CH3−CH2−OH, which indicates that the carbon of a methyl group (CH3−) is attached to the carbon of a methylene group (−CH2–), which is attached to the oxygen of a hydroxyl group (−OH). Molecular Formula. C2H6O. It is a constitutional isomer of dimethyl ether. Ethanol is a 2-carbon alcohol. View Spectrum of Ethanol. 46.041865 g/mol. NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data) Its molecular formula is CH3CH2OH. 46.07 g/mol. Ethanol is sometimes abbreviated as EtOH, using the common organic chemistry notation of representing the ethyl group (C2H5−) with Et.