PRODUCT Properties
| Melting point: | 120-122 °C (lit.) |
| Boiling point: | 370.2±27.0 °C(Predicted) |
| Density | 1.3163 (estimate) |
| storage temp. | Sealed in dry,Room Temperature |
| form | powder to crystal |
| color | Light orange to Yellow to Green |
| Water Solubility | Soluble in water. |
| BRN | 1971736 |
| CAS DataBase Reference | 579-39-5(CAS DataBase Reference) |
| EPA Substance Registry System | Ethanedione, bis(4-fluorophenyl)- (579-39-5) |
Description and Uses
4,4′-Difluorobenzil is suitable for use in the preparation of 2,3-bis(4-fluorophenyl)thieno[3,4-b]pyrazine. It may be used in the synthesis of following:
- poly(ether-α-diketone)s, via nucleophilic substitution reaction with bisphenol A
- 4,4′-difluoro-2,3-diphenylpyrazine (DPPF) and 4,4′-difluoro-5-methyl 2,3-diphenylpyrazine (MDPPF), via direct condensation with ethylenediamine and 1,2-diaminopropane, respectively
- 2,3-bis(4-fluorophenyl)quinoxaline, via direct condensation with 1,2-phenylenediamine
Safety
| Symbol(GHS) |  GHS07 |
| Signal word | Warning |
| Hazard statements | H315-H319-H335 |
| Precautionary statements | P261-P305+P351+P338-P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313-P280a-P304+P340-P405-P501a |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-37/39 |
| WGK Germany | 3 |
| Hazard Note | Irritant |
| TSCA | T |
| HS Code | 29147000 |
