3,3'-Dichloro-4,4'-((bis(N-methyl-N-(2-sulfoethyl))triazeno)biphenyl, disodium salt 68133-33-5 Disodium 2,2'-((3,3'-dichloro(1,1'-biphenyl)-4,4'-diyl)bis(1-methyl-2-triazene-3,1-diyl))bisethanesulphonate EINECS 268-676-1 Ethanesulfonic acid, 2,2'-((3,3'-dichloro(1,1'-biphenyl)-4,4'-diyl)bis(1-methyl-2-triazene-3,1-diyl))bis-, disodium salt