Name:C.I.Direct Blue 71,C.I.34140
Molecular Structure: trisazo class
C.I.Direct Blue 71,C.I.34140,CAS 4399-55-7,1029.87,C40H23N7Na4O13S4,Direct Fast Blue 2RL,Direct Fast Blue B2R,Direct Fast Blue B2RL,Direct Navy BlueL-3RB,Sirius Blue S-BRR,Solophenyl Blue GL
Molecular Weight: 1029.87
CAS Registry Number:4399-55-7
Manufacturing Methods : 3-Aminonaphthalene-1,5-disulfonic acid diazo, and Naphthalen-1-amine first coupling, its product to diazo, and 8-Aminonaphthalene-2-sulfonic acid second coupling, again diazo, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid third coupling.
Widely used in viscose fiber dyeing, also used in viscose/PVA blends, cotton, and the carpet of dyeing and printing. Also used in leather, paper, soap, cheese, protein and formaldehyde resin color.
|Standard||Acid Resistance||Alkali Resistance||Light Fastness||Soaping||Water|
|ISO||4||4-5||5||2|| ||2|| |
|AATCC||2||4||4-5||1-2|| ||2|| |