Black BD; 5-Amino-3-[4-(2,4-diaminophenylazo)phenylazo]-4-hydroxy-6-(4-nitrophenylazo)-2,7-naphthalenedisulfonic acid disodium salt; C.I. 30024; C.I. Acid Black 241; Coriamin Black FS; Tolan Black B; 2,7-Naphthalenedisulfonic acid, 4-amino-6-[2-[4-[2-(2,4-diaminophenyl)diazenyl]phenyl]diazenyl]-5-hydroxy-3-[2-(4-nitrophenyl)diazenyl]-, disodium salt
