Synonyms: Mordant blue 1; Chrome pure blue BX; C.I.Mordant Blue 1; Acid Chrome Pure Blue B;Chromeazurol B; Mordant Blue 1; Mordant Blue 1 (43830); Disodium 5-[(E)-(3-carboxylato-5-methyl-4-oxo-1-cyclohexa-2,5-dienylidene)-(2,6-dichlorophenyl)methyl]-2-hydroxy-3-methyl-benzoate;