2,7-Naphthalenedisulfonic acid, 4-amino-3-((4'-((2,4-diaminophenyl)azo)-3,3'-dimethoxy(1,1'-biphenyl)-4-yl)azo)-5-hydroxy-6-(phenylazo)-, disodiumsalt 38449-92-2 4-((1-Amino-3,6-disulfo-7-(phenylazo)-8-hydroxy-2-naphthyl)azo)-4'-((2,4-diaminophenyl)azo)-3,3'-dimethoxy-1,1'-biphenyl, disodium salt Disodium 4-amino-3-((4'-((2,4-diaminophenyl)azo)-3,3'-dimethoxy(1,1'-biphenyl)-4-yl)azo)-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate EINECS 253-940-0