Synonyms: Iron, complexes with diazotized 2-amino-4,6-dinitrophenol coupled with diazotized 4-nitrobenzenamine and 4-(2-(2,4-dihydroxyphenyl)diazenyl)-5-hydroxy-2,7-naphthalenedisulfonic acid, sodium salts;Iron, complexes with diazotized 2-amino-4,6-dinitrophenol coupled with diazotized 4-nitrobenzenamine and 4-((2,4-dihydroxyphenyl)azo)-5-hydroxy-2,7-naphthalenedisulfonic acid, sodium salts;disodium; 2-amino-4,6-dinitro-phenol; 4-hydroxy-5-[(N'E)-N'-(2-hydroxy-4-oxo-1-cyclohexa-2,5-dienylidene)hydrazino]naphthalene-2,7-disulfonate; iron; 4-nitroaniline