2,7-Naphthalenedisulfonic acid,5-amino-4-hydroxy-3-[[6-sulfo-4-[(4-sulfo-1-naphthalenyl)azo]-1-naphthalenyl]azo]-,diazotized,coupled with diazotized 4-nitrobenzenamine and resorcinol,potassium sod
2,7-Naphthalenedisulfonic acid,5-amino-4-hydroxy-3-[[6-sulfo-4-[(4-sulfo-1-naphthalenyl)azo]-1-naphthalenyl]azo]-,diazotized,coupled with diazotized 4-nitrobenzenamine and resorcinol,potassium sod