Direct Black 80 CAS 8003-69-8

trisodium6-[(7-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-3-[[4-[[4-amino-6(or7)-sulphonatonaphthyl]azo]phenyl]azo]-4-hydroxynaphthalene-2-sulphonate;2-Naphthalenesulfonicacid,6-(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo-3-4-4-amino-6(or7)-sulfo-1-naphthalenylazophenylazo-4-hydroxy-,trisodiumsalt;C.I.directblack80.;Directblack80(C.I.31600);BlackOB;DiChemicalbookrectblackOB;trisodium,(3Z)-6-amino-3-[[(7Z)-7-[[4-[(4-amino-7-sulfonatonaphthalen-1-yl)diazenyl]phenyl]hydrazinylidene]-8-oxo-6-sulfonatonaphthalen-2-yl]hydrazinylidene]-4-oxonaphthalene-2-sulfonate;2-Naphthalenesulfonicacid,6-[(7-amino-1-hydroxy-3-sulfo-2-naphthlenyl)azo]-3-[[4-[[4-amino-6(or7)-sulfo-1-naphthalenyl]azo]phenyl]azo]-4-hydroxy,trisodiumsalt