1-Naphthalenesulfonic acid, 5,5'-((1-methylethylidene)bis(4,1-phenyleneoxysulfonyl-2,1-phenyleneazo))bis(6-amino-, disodium salt 70161-18-1 Disodium 5,5'-((1-methylethylidene)bis(4,1-phenyleneoxysulphonyl-2,1-phenyleneazo))bis(6-aminonaphthalene-1-sulphonate) EINECS 274-354-1