2-Naphthalenesulfonic acid, 7,7'-(carbonyldiimino)bis(4-hydroxy-3-((2-methyl-4-sulfophenyl)azo)-, compd. with 2,2',2''-nitrilotris(ethanol) (1:4) 38801-07-9 7,7'-(Carbonyldiimino)bis(4-hydroxy-3-((2-methyl-4-sulphophenyl)azo)naphthalene-2-sulphonic) acid, compound with 2,2',2''-nitrilotriethanol (1:4) EINECS 254-129-4