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| Product Name: | 6FCDA | | Synonyms: | 6FCDA;9,9-bis(trifluoromethyl)-2,3,6,7-xanthenetetracarboxylic dianhydride;1H-Difuro[3,4-b:3',4'-i]xanthene-1,3,7,9(11H)-tetrone, 11,11-bis(trifluoromethyl)-;9,9-bis(trifluoromethyl)-2,3,6,7-xanthenetetracarboxylic dianhydride (6FCDA);6FCDA9,9-bis(trifluoromethyl)-2,3,6,7-xant henetetracarboxylic dianhydride;11,11-Bis(trifluoromethyl)-1H-difuro[3,4-b:3',4'-i]xanthene-1,3,7,9(11H)-tetraone | | CAS: | 139162-14-4 | | MF: | C19H4F6O7 | | MW: | 458.22 | | EINECS: | | | Product Categories: | | | Mol File: | 139162-14-4.mol |  |
| | 6FCDA Chemical Properties |
| Boiling point | 598.6±50.0 °C(Predicted) | | density | 1.848±0.06 g/cm3(Predicted) |
| | 6FCDA Usage And Synthesis |
| Preparation | The preparation of 6FCDA is as follows:Add 154g of 9,9-bis(trifluoromethyl)-2,3,6,7-xanthene tetracarboxylic acid (0.31mol) obtained in step into a 1L three-necked flask, and then add 539g of acetic anhydride ( 5.28mol), the temperature was raised to 105±2°C and the reaction was stirred for 5-6h. After the reaction was completed, the temperature was lowered to 25±2°C, filtered, the filter cake was rinsed with 300 g of toluene, and vacuum dried at 80°C for 15 hours to obtain a white powdery solid 131 g of 9,9-bis(trifluoromethyl)-2,3,6,7-oxanthene tetracarboxyl dianhydride, purity (HPLC) was 99.6%, and yield was 91.8%. 
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| | 6FCDA Preparation Products And Raw materials |
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