|Pyromellitic Acid||Pyronaridine||Pyronine B||Pyronine Y||Pyrophosphoric Acid|
|Boiling point||99 °C; 210 °F; 372 K ()|
|Flash point||44 °C (111 °F)|
|Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)|
Pyroligneous acid, also called wood vinegar, is a dark liquid produced through the natural act of carbonization, which occurs when wood is heated in an airless container during charcoal production.