10114-86-0 3,3'-(Carbonylbis(imino(3-methoxy-4,1-phenylene)azo))bis(benzenesulfonic acid), disodium salt 3,3'-(Ureylenebis((3-methoxy-p-phenylene)azo))dibenzenesulfonic acid, disodium salt 79817-76-8 Benzenesulfonic acid, 3,3'-(carbonylbis(imino(3-methoxy-4,1-phenylene)azo))bis-, disodium salt Disodium 3,3'-(carbonylbis(imino(3-methoxy-4,1-phenylene)azo))bis(benzenesulphonate) EINECS 233-316-4