70210-33-2 Benzoic acid, 2,2'-((3,3'-dimethoxy(1,1'-biphenyl)-4,4'-diyl)bis(azo(2-amino-5-hydroxy-7-sulfo-6,1-naphthalenediyl)azo))bis(5-nitro-, tetrasodium salt EINECS 274-429-9 Tetrasodium 2,2'-((3,3'-dimethoxy(1,1'-biphenyl)-4,4'-diyl)bis(azo(2-amino-5-hydroxy-7-sulphonato-6,1-naphthylene)azo))bis(5-nitrobenzoate)