1-Naphthalenesulfonic acid, 8,8'-((1,1'-biphenyl)-4,4'-diylbis(azo))bis(7-hydroxy-, disodium salt 2302-97-8 8,8'-(4,4'-Biphenylylenebis(azo))bis(7-hydroxy-1-naphthalenesulfonic acid) Direct bordeaux R Disodium 8,8'-((1,1'-biphenyl)-4,4'-diylbis(azo))bis(7-hydroxynaphthalene-1-sulphonate) EINECS 218-959-0