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pyrogallol
[ pahy-ruh-gal-awl, -ol, -guh-lawl, -lol ]
noun
- a white, crystalline, water-soluble, poisonous, solid, phenolic compound, C 6 H 3 (OH) 3 , obtained by heating gallic acid and water: used chiefly as a developer in photography, as a mordant for wool, in dyeing, and in medicine in the treatment of certain skin conditions.
pyrogallol
/ ËŒ±è²¹Éª°ùəʊˈɡæ±ôÉ’±ô /
noun
- a white lustrous crystalline soluble phenol with weakly acidic properties; 1,2,3-trihydroxybenzene: used as a photographic developer and for absorbing oxygen. Formula: C 6 H 3 (OH) 3
Derived Forms
- ËŒ±è²â°ù´Çˈ²µ²¹±ô±ô¾±³¦, adjective
Other ˜yÐÄvlog Forms
- ±è²â·°ù´Ç·²µ²¹±ô·±ô¾±³¦ [pahy-r, uh, -, gal, -ik, -, gaw, -lik], adjective
˜yÐÄvlog History and Origins
Origin of pyrogallol1
˜yÐÄvlog History and Origins
Origin of pyrogallol1
Example Sentences
Gallic acid is a type of pyrogallol and is primarily found in coffees and teas.
The one called the pyrogallol group, which includes sumac, gall nuts and oak bark, is commended by the Committee of the Society of Arts.
An alkaline solution of pyrogallol is also used; this solution rapidly absorbs oxygen, becoming black in colour, and it is necessary to prepare the solution immediately before use.
The pyrogallol method of Preisz also proved to be unreliable in his hands.
The tannins are divided into two general classes, known respectively as the pyrogallol tannins and the catechol tannins.
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