Term Name:	indigo carmine
Synonyms:	Acid blue 74, C.I. 73015, C.I. 75781, C.I. Acid Blue 74, C.I. Food Blue 1, C.I. Food Blue 1, disodium salt, C.I. Natural Blue 2, disodium (2E)-3-oxo-2-(3-oxo-5-sulfonato-1,3-dihydro-2H-indol-2-ylidene)-2,3-dihydro-1H-indole-5-sulfonate, Disodium 3,3'-dioxo-(delta2,2'-biindoline)-5,5'-disulfonate, Disodium 5,5'-disulfoindigo, Disodium 5,5'-indigotin disulfonate, Disodium indigo-5,5-disulfonate, E 132, FD and C Blue No. 2, FD&C Blue No. 2, Indigo carmine, Indigocarmine, Indigotin-5,5'-disulfonic acid disodium salt, Indigotindisulfonate sodium, Natural blue 2, Sodium 5,5'-indigotindisulfonate, Sodium indigo-5,5'-bisulfonate, Sodium indigotindisulfonate
Definition:	An organic sodium salt resulting from the formal condensation of indigo carmine (acid form) with two equivalents of sodium hydroxide. It is an indicator at pH 11.5-14, changing from blue to yellow.
Ontology:	ChEBI [CHEBI:31695]  ( EBI )