CAS No 72480-07-0 , Iron, complexes with diazotized 2-amino-4,6-dinitrophenol coupled with diazotized 4-amino-5-hydroxy-1,3-naphthalenedisulfonic acid, diazotized 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid, diazotized 4-amino-3-methylbenzenesulfonic acid, diazotized 4-