DIRECT DIAZO LIGHTFAST BLUE K; 1,5-Naphthalenedisulfonicacid,3-[[4-[[4-[(4-amino-5-methoxy-2-methylphenyl)azo]-6(or7)-sulfo-1-naphthalenyl]azo]-1-naphthalenyl]azo]-,trisodiumsalt;C.I.Direct Blue 126:C.I.34010;Direct Blue 126;Direct Diazo Lightfast Blue K