ethanol

إيثانول

A clear, colorless, flammable oxygenated hydrocarbon. Ethanol is typically produced chemically from ethylene, or biologically from fermentation of various sugars from carbohydrates found in agricultural crops and cellulosic residues from crops or wood. It is used in the United States as a gasoline octane enhancer and oxygenate (blended up to 10 percent concentration). Ethanol can also be used in high concentrations (E85) in vehicles designed for its use. See Fuel ethanol and E85. Note: The lower heating value, equal to 76,000 Btu per gallon, is assumed for estimates in the Renewables Energy Annual report.