2-Chloro-4-((4-nitrophenyl)azo)benzenediazonium hydrogen sulphate 72845-90-0 Benzenediazonium, 2-chloro-4-((4-nitrophenyl)azo)-, hydrogen sulfate Benzenediazonium, 2-chloro-4-((4-nitrophenyl)azo)-, sulfate (1:1) EINECS 276-937-6