A volatile, complex combination obtained by the destructive distillation of wood; main ingredients are acetic acid & methanol.

TSCA Definition 2019: Extracts derived from pyroligneous acid which is the condensed volatile material obtained from the destructive distillation of wood.

TSCA Definition 2019: Product made by condensation of smoke bearing water vapor resulting from the controlled burning of hickory. It consists primarily of acetic acid, dimethoxyphenol, 2-butanone and water.