Reactive Black 31
- CAS NO.：12731-63-4
- Empirical Formula: C29H20N6O17S4.4Na
- Molecular Weight: 0
- MDL number: MFCD00802446
- Update Date: 2026-08-28 09:47:30
What is Reactive Black 31?
Properties and Applications
Red light gray to black. Suitable for cotton dyeing, printing and direct discharge printing. White degree of 74.15%.
| Standard | Light Fastness | Oxygen bleaching | Persperation Fastness | Soaping | |||
| Fading | Stain | Fading | Stain | Fading | Stain | ||
| ISO | 7 | 3(blue) | 5 | 3-4(Alkali) | 5 | 4(95℃) | 4 |
Safety information for Reactive Black 31
Reactive Black 31 manufacturer
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