Any of different colorless substances derived from the reduction of phthaleins.
A colourless crystalline compound gotten by reduction from phthalein, into which its effortlessly converted by oxidation.
the number of which phthalin proper could be the kind.
A colorless crystalline substance obtained by decrease from phthaleïn, into which it really is effortlessly transformed by oxidation; hence, anyone of the series of which phthalin proper may be the kind.
A substance formed because of the reduced total of a phthalein. See phenolphthalin.