Sentence Examples with the word pyrogallic

PYROGALLOL, or Pyrogallic Acid, a trioxybenzene, C 6 H 3 (OH) 3 (1: 2: 3), prepared by Scheele in 1786 by heating gallic acid, C 6 H 2 (OH) 3 CO 2 H.

Tannic acid is absorbed as gallic acid into the blood and eliminated as gallic and pyrogallic acids, darkening the urine.