C.I. Acid Black 210

dipotassium;5-amino-3-[[4-[[4-[(2,4-diaminophenyl)diazenyl]phenyl]sulfamoyl]phenyl]diazenyl]-4-hydroxy-6-[(4-nitrophenyl)diazenyl]naphthalene-2,7-disulfonate

ZEEMBOPWDPAXAI-UHFFFAOYSA-L

C1=CC(=CC=C1NS(=O)(=O)C2=CC=C(C=C2)N=NC3=C(C4=C(C(=C(C=C4C=C3S(=O)(=O)[O-])S(=O)(=O)[O-])N=NC5=CC=C(C=C5)[N+](=O)[O-])N)O)N=NC6=C(C=C(C=C6)N)N.[K+].[K+]