| Physical Apperance | Grey Powder Form |
| Chemical Name | Bis-5-Hydroxy 7 Sulphonaphthyl (2)-Amine 6-6 Iminobis-(1-Naphthol-3-Sulphonic Acid) |
| M.W. | 461 |
| CAS. No. | 87-03-6 |
| Empirical Formula | C20H15O8NS2 |
| Structural Formula | ![]() |
| Puirity by C.V. | 60.00% (Minimum) |
| HPLC Purity | Less than 1.50% |
| Dioxy Acid Content | Less than 2.00% |
| Insolubles | 0.50% Maximum |
| Application | Intermediate for Direct Red 12B & others. |
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