72928-89-3 Chromate(3-), bis(5-((2-hydroxy-4-nitrophenyl)azo)-6-hydroxy-2-naphthalenesulfonic acid)-, trihydrogen Chromate(3-), bis(6-(hydroxy-kappaO)-5-((2-(hydroxy-kappaO)-4-nitrophenyl)azo-kappaN1)-2-naphthalenesulfonato(3-))-, trihydrogen EINECS 277-098-9 Trihydrogen bis(6-hydroxy-5-((2-hydroxy-4-nitrophenyl)azo)naphthalene-2-sulphonato(3-))chromate(3-)