16423-67-9 Benzenesulfonic acid, 4,4'-((2,4-diamino-5-methyl-m-phenylene)bis(azo))di-, disodium salt (8CI) Disodium 4,4'-((2,4-diamino-5-methyl-1,3-phenylene)bis(azo))bis(benzenesulphonate) EINECS 240-473-2 NSC 65540