NCIt synonyms : CI Direct Blue 6; CI 22610; 3,3'-[(1,1'-Biphenyl)-4,4'-Diylbis(Azo)]Bis(5-Amino-4-Hydroxy)- 2,7-Naphthalenedisulfonic
Acid, Tetrasodium Salt; Diphenyl-4,4'-Bis-Azo-2-8-Amino-1-Naphthol-3,6-Disulphonatesodium;
NCIt definition : A Benzidine-based azo dye that is metabolized to free Benzidine in vivo. Direct blue
6 is primarily used for the dyeing of textiles, leather and paper. Benzidine and its
metabolic derivatives have been detected in the urine of workers exposed to Benzidine-based
dyes. Exposure to this dye is strongly associated with the occurrence of bladder cancer.
(NCI05);