2H-Naphtho(1,2-d)triazole-6,8-disulfonic acid, 2,2'-(carbonylbis(imino(5-methoxy-2-methyl-4,1-phenylene)azo(2-sulfo-4,1-phenylene)-2,1-ethenediyl(3-sulfo-4,1-phenylene)))bis-, octasodium salt 67875-00-7 EINECS 267-515-2 Octasodium 2,2'-(carbonylbis(imino(5-methoxy-2-methyl-4,1-phenylene)azo(2-sulphonato-4,1-phenylene)vinylene-(3-sulphonato-4,1-phenylene)))bis(2H-naphtho(1,2-d)triazole-6,8-disulphonate)