| Chemical Name | Bis(hydrogen (4-(4-(diethylamino)-5?-hydroxy-2?,4?-disulphonatobenzhydrylidene)cyclohexa-2,5-dien-1-ylidene)diethylammonium), calcium salt; Blue ZN 3 |
| C.I. No. | 42051 |
| CAS No. | 3536-49-0 |
| Structure |  |
| Specification | Molecular Formula : C27H32N2O7S2 Molecular Weight : 560.68 |
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