It is a product of the dry distillation of organic bodies, and is the preservative principle of wood smoke and pyroligneous acid.
A small portion of pyroligneous acid may be added to the brine.
The pyroligneous acid obtained, is generally clear, after nitration, and of a dark brown colour.
pyroligneous acid, both pure and variously diluted with water.
Those which sought information concerning a crude coagulant (pyroligneous acid) on estates.
Wood is distilled partly for the sake of the pyroligneous acid and the tar, partly for the charcoal.
The latter method is only practised by the manufacturers of pyroligneous acid and gunpowder.
The Taylor process (experiment No. 21) used a solution of sulphide of calcium in pyroligneous acid.
Before reaching the exhaustor, however, they pass through a cooler in which a quantity of tar and pyroligneous acid is collected.
When wood is slowly burned, it gives off acetic and pyroligneous acid, which in combination with water or moisture form creosote.