CAS No 72207-77-3 , Iron, complexes with diazotized 5-amino-2-(phenylamino)benzenesulfonic acid monosodium salt coupled with 4-[(2-hydroxy-3,5-dinitrophenyl)azo]-1,3-benzenediol, diazotized 4-nitrobenzenamine and diazotized 3-aminobenzenesulfonic acid monosodium salt