Direct Blue 6

1-Naphthol-3,6-disulfonicacid, 2,2'-(4,4'-biphenylylenebisazo)bis[8-amino-, tetrasodium salt (6CI) ; 2,7-Naphthalenedisulfonic acid,3,3'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis[5-amino-4-hydroxy-, tetrasodiumsalt (9CI) ; C.I. Direct Blue 6, tetrasodium salt(8CI) ; Airedale Blue 2BD ; Aizen Direct Blue 2BH ; Amanil Blue 2BX ; Atlantic Blue2B ; Atul Direct Blue 2B ; Azocard Blue 2B ; Azomine Blue 2B ; Belamine Blue 2B ; Bencidal Blue 2B ; Benzanil Blue 2B ; Benzo Blue 2B ; BenzoBlue BBN-CF ; Blue 2B salt ; Calcomine Blue 2B ; Chloramine Blue 2B ; Chlorazol BlueBP ; Chrome Leather Blue 2B ; Cresotine Blue 2B ; Diamine Blue ; Diamine Blue 2B ; Diamine Blue BB ; DiazolBlue 2B ; Diphenyl Blue 2B ; Direct Blue2B ; Direct Blue 2BA ; Direct Blue A ; Direct BlueGS ; Direct Blue K ; Direct Sky Blue K ; Enianil Blue 2BN ; Fixanol Blue 2B ; Hispamin Blue 2B ; Naphtamine Blue 2B ; Niagara Blue 2B ; Nippon Blue BB ; Paramine Blue 2B ; Phenamine Blue BB ; Pheno Blue 2B ; Tertrodirect Blue 2B ; Vondacel Blue 2B ; ; 2,7-Naphthalenedisulfonicacid,3,3'-[[1,1'-biphenyl]-4,4'-diylbis(2,1-diazenediyl)]bis[5-amino-4-hydroxy-,sodium salt (1:4)