Chemistry and Chemical Disasters. A colorless, limpid, volatile liquid (C2H5OH) classified as a depressant, that has a vinous odor and pungent taste, a flash point of 55oF, an ignition temperature of 689oF, and a flammable range of (3) 3 percent to 19 percent. See: Alcohol, Ethanol, Ethylene Glycol, EtOH, Grain Alcohol