Flow (distillation)
As a lead in is called distillation of spirits , the resulting distillate at the beginning. In addition to alcohol, it contains various volatile substances, including a high proportion of toxic methanol , acetaldehyde and ethyl acetate , and is not suitable for human consumption.
The forerun usually has an unpleasant, pungent-sharp, “chemical” odor and a strongly astringent taste. Even in large distilleries, the master distiller separates the flow after this "glue smell". Vorlauf is traditionally used externally for medical purposes, for disinfection and as a cleaning agent, or it is further processed into denatured alcohol and agricultural alcohol .
The flow is a mixture of various highly flammable and toxic substances and must be labeled as a hazardous substance when it is placed on the market . After the preliminary run, the so-called heart (the edible brandy, also called the main run) is won, then the follow-up .
Individual evidence
- ↑ Distillation head - a home remedy to rub in? ( Memento from February 12, 2013 in the web archive archive.today ).
- ↑ Walter Wittenberger: Chemische Laboratoriumstechnik , Springer-Verlag, Vienna, New York, 7th edition, 1973, pp. 175-176, ISBN 3-211-81116-8 .