6426-71-7

Direct Blue 42 altazine black bh Direct Diazo Black BH aizen direct black bh amanil developed black bhsw C.I.Direct Blue 42:C.I.22505 amanil developed black bhsw ISO 9001：2015 REACH 1'-biphenyl)-4- hydroxy-phthalenyl)azo)( trisodium salt 1'-biphenyl]-4-yl]azo]-4-hydroxy-phthalenyl)azo][ trisodium salt 1'-biphenyl)-4-yl)azo)-4-hydroxy-phthalenyl) azo)( trisodium salt 2,7-naphthalenedisulfonic acid, 5-amino-3-((4'-((7-amino-1-hydroxy-3-sulfo-2-na 2,7-naphthalenedisulfonic acid, 5-amino-3-[[4'-[(7-amino-1-hydroxy-3-sulfo-2-na