Sinonim congo red

English Thesaurus

1. a red-brown azo dye especially as a chemical pH indicator (congo red is red in basic and blue in acidic solutions) (noun.substance)

hypernym	:	acid-base indicator,
definition	:	an indicator that changes color on going from acidic to basic solutions (noun.substance)

hypernym	:	azo dye,
definition	:	any dye containing one or more azo groups (noun.substance)

domain category	:	solution,
definition	:	a homogeneous mixture of two or more substances; frequently (but not necessarily) a liquid solution (noun.substance)