Pyroligneous acid
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Pyroligneous acid, also called wood vinegar, is a dark liquid produced by the destructive distillation of wood. Its principal components are acetic acid and methanol. It was once used as a commercial source for acetic acid.
Recently, it has been promoted as a natural aid for various uses including detoxification, mild pain relief, and to sterilize and promote healing of minor wounds. These claims may be of questionable value.