The main type of alcohol present in wine, commonly known as alcohol is referred to, although this is actually imprecise. Older names are ethanol, ethyl alcohol and ethyl alcohol, and colloquially also spirit. It is a monohydric alcohol because a hydrogen atom is replaced by a hydroxy group (oxygen-hydrogen). In the course of the winemaking process, the colorless and odorless liquid at the fermentation of must in the ratio of 51% ethanol to 49% carbon dioxide from the sugar educated. The industrial production takes place through distillation of wine or by hydrating ethylene. To the Spriten (Adding alcohol to the finished wine) ethanol is mostly used.