| Chemical Name | disodiumsalt;7-naphthalenedisulfonicacid |
| C.I. No. | 18050 |
| CAS No. | 3734-67-6 |
| Structure |  |
| Specification | Molecular Formula : C18H13N3Na2O8S2 Physical Appearance : Red to Purple Powder Shade : Bright Bluish Red & Mid Shade Red
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