2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, diazotized, coupled with diazotized 2-amino-4,6-dinitrophenol, diazotized 4-nitrobenzenamine and resorcinol 4-Amino-5-hydroxy-2,7-napthalenedisulfonic acid, 2-amino-4,6-dinitrophenol, 4-nitroaniline, 1,3-dihydroxybenzene reaction product 71010-82-7 EINECS 275-120-1