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| Product name | thiophene -2,5-dicarboxylic acid |
| Structural formula |  |
| Molecular formula | C66H4O4S |
| CAS No | 4282-31-9 |
| EC No | 224-284-2 |
| Molecular weight | 172 |
| Technical conditions | |
| Appearance: | cream white -colored powder |
| Melting point | 328-330°C |
| Purity | ≥97% |
| PH | 5-6 |
| Fineness | through 100 meshes |
| Use | It is used in making fluorescent brighgteners. |
| Package | It is packed in plastic woven bag .Net weight of each bucket is 25kg. |
