s/n14609198

Information
has gloss	(noun) an indicator that changes color on going from acidic to basic solutions acid-base indicator
lexicalization	eng: acid-base indicator
subclass of	(noun) (chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction indicator
has subclass	(noun) a red-brown azo dye especially as a chemical pH indicator (congo red is red in basic and blue in acidic solutions) congo red
has subclass	(noun) an azo dye used as an acid-base indicator; used for titrations involving weak bases methyl orange
has subclass	(noun) a coloring material (obtained from lichens) that turns red in acid solutions and blue in alkaline solutions; used as a very rough acid-base indicator litmus test, litmus
has subclass	(noun) a dye used as an acid-base indicator bromphenol blue, tetrabromo-phenolsulfonephthalein, bromophenol blue
has subclass	(noun) a dye used as an acid-base indicator bromthymol blue, bromothymol blue
has subclass	(noun) a laxative used in many preparations under various trade names; also used as an acid-base indicator in titrations involving weak acids and strong bases because it is brilliant red at high alkalinity and colorless below pH 8 phenolphthalein