1-Naphthalenesulfonic acid, 6-((3-chloro-2-hydroxy-5-nitrophenyl)azo)-5-hydroxy-, monosodium salt 1-Naphthalenesulfonic acid, 6-((3-chloro-2-hydroxy-5-nitrophenyl)azo)-5-hydroxy-, sodium salt 10132-98-6 6-((3-Chloro-2-hydroxy-5-nitrophenyl)azo)-5-hydroxy-1-naphthalenesulfonic acid, sodium salt EINECS 233-371-4 Sodium 6-((3-chloro-2-hydroxy-5-nitrophenyl)azo)-5-hydroxynaphthalene-1-sulphonate