| Chemical Name. | Reactive Black 31 |
| C.I. No. | – |
| CAS No. | 12731-63-4 |
| Synonyms | Reactive Black KN-RL,Reactive Black RL |
| Molecular Formula | C29H18CuN6Na4O17S4 |
| Molecular Weight | 1006.25 |
| Chemical Name. | Reactive Black 31 |
| C.I. No. | – |
| CAS No. | 12731-63-4 |
| Synonyms | Reactive Black KN-RL,Reactive Black RL |
| Molecular Formula | C29H18CuN6Na4O17S4 |
| Molecular Weight | 1006.25 |