Syonyms Name: Acid Blue EA; C.I. 42090; C.I. Acid Blue 9; C.I. Acid Blue 9, diammonium salt; C.I. Direct Brown 78; C.I. Direct Brown 78, Diammonium Salt; C.I. Acid Blue 9, diammonium salt; diammonium 2-[(Z)-{4-[ethyl(3-sulfonatobenzyl)amino]phenyl}{(4Z)-4-[ethyl(3-sulf