| Chemical Name. | Reactive Brown 9 |
| C.I. No. | – |
| CAS No. | 12225-66-0 |
| Synonyms. | Crimson K-RB, Reactive Red Brown K-B3R, Reactive Red Brown KM-B3R, Indofix Red Brown H4RI, Kemaion Red Brown H4R, KPZol Cion Brown P-5BR, Meactive Red Brown H4R, Procion Red Brown H-4R, Reactron Red Brown H4R |
| Molecular Formula | C28H20ClN7Na2O12S3 |
| Molecular Weight | 824.13 |
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