CALCOMINE DIAZO BLACK BHD DIAZOPHENYL BLACK BH DIAZO BLACK BH DIAZO BLACK BHN DIRECT BLUE 2 CHLORAZOL BLACK BH PONTAMINE DEEP BLUE BH 5-amino-3-[[4'-[(7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo][1,1'-biphenyl]-4-yl]azo]-4-hydroxy-2,7-Naphthalenedisulfonic acid, trisodium salt