Ethanol is a kind of alcohol and the main component of wine, so it is also called alcohol. In some places, it is commonly known as fire wine, which is a renewable substance. Ethanol is flammable and is commonly used as fuel, solvent and disinfectant. It is also used to make other compounds. Industrial alcohol contains a small amount of methanol. Medical alcohol mainly refers to alcohol with a concentration of about 75%, and also includes alcohol with other concentrations widely used in medicine. Ethanol and methyl ether are isomers.