Product Name: Direct Blue 71
C.I. No.: 34140
CAS No.: 4399-55-7
Molecular Formula:C40H23N7Na4O13S4
Molecular Weight: 1029.87
Relatived Names:
Ambidirect Blue R; Bitafast Blue GLL; Blue 2-RL; Blue B2R 100%;Chrochem Direct Blue BRR; Direct Blue B2RL; Direct Blue FFC;Direct Blue GLL; Direct Fast Blue B2R; Direct Fast Blue B3RL;Direct Light Blue FRL
Shade: dark blue. Blue gray powder. Soluble in water for blue
Direct Blue 71 Physical Properties and light fastness, solubility.
| Direct Blue 71 | |
| Density | 1.31 |
| Dyeing Depth % | 2 |
| Light Fastness | 5-6 |
| Washing Fatness | 3-4 |
| Rubbing Fastness(dry) | 4 |
| Rubbing Fastness(wet) | 2-3 |
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.
Note: The data contained here are based on our current knowledge and experience. It is the responsibility of user to test our products before the final application.
