<unk> , also known as ethyl alcohol, drinking alcohol or grain alcohol, is a flammable, colorless, slightly toxic chemical compound, and is best known as the alcohol found in alcoholic beverages. In common usage, it is often referred to simply as alcohol. Its molecular formula is variously represented as<unk> , CH3CH2OH, C2H5OH or as its empirical formula C2H6O (which it shares with dimethyl ether).
After the use of fire, fermentation of sugar into<unk>  is perhaps the earliest organic reaction known to humanity, and the intoxicating effects of<unk>  consumption have certainly been known since ancient times. In modern times<unk>  intended for industrial use has also been produced from byproducts of petroleum refining.
Because of<unk> 's ease of production and its low toxicity, it finds widespread use as a solvent for substances intended for human contact or consumption, including scents, flavorings, colorings, and medicines. In chemistry it is both an essential solvent and a fundamental feedstock for the synthesis of other products. Because it burns cleanly,<unk>  has a long history as a fuel, including as a fuel for internal combustion engines.
Ethanol
Isopropyl alcohol
Chloroethane
Chloroform
Dichloromethane
Diethyl ether
Chloromethane
2-Ethylhexanol