38801-08-0 Benzoic acid, 4,4'-(carbonylbis(imino(1-hydroxy-3-sulfo-6,2-naphthalenediyl)azo))bis-, compd. with 2,2',2''-nitrilotris(ethanol) (1:4) Benzoic acid, 4,4'-(carbonylbis(imino(1-hydroxy-3-sulfo-6,2-naphthalenediyl)azo)bis-, compd. with 2,2',2''-nitrilotris(ethanol) (1:4)