2-Naphthalenesulfonic acid, 7-amino-4-hydroxy-, diazotized, coupled with diazotized 2-((4-aminophenyl)amino)-5-nitrobenzenesulfonic acid, diazotized 2-chloro-4-nitrobenzenamine and 5,5'-(oxybis((5-hydroxy-3,1-phenylene)oxy))bis(1,3-benzenediol), sodium salts 97953-02-1 EINECS 308-399-6