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chengqiaotech.ltd Gold |
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| Product Name: | Difluoroacetic anhydride | | Synonyms: | 2,2-difluoroacetic acid (2,2-difluoro-1-oxoethyl) ester;2,2-Difluoro-acetic acid 1,1'-anhydride;1,1,5,5-Tetrafluoro-3-oxapentan-2,4-dione;DIFLUOROACETIC ACID ANHYDRIDE;DifluoroaceticAnhydride>;Acetic acid,2,2-difluoro-, 1,1'-anhydride;2,2-difluoroacetic anhydride;Difluoroacetic anhydride | | CAS: | 401-67-2 | | MF: | C4H2F4O3 | | MW: | 174.05 | | EINECS: | 200-258-5 | | Product Categories: | | | Mol File: | 401-67-2.mol |  |
| | Difluoroacetic anhydride Chemical Properties |
| Boiling point | 94℃ | | density | 1.4 | | refractive index | 1.3410-1.3450 | | Fp | 11℃ | | form | clear liquid | | Specific Gravity | 1.59 | | color | Colorless to Light yellow to Light orange | | InChI | InChI=1S/C4H2F4O3/c5-1(6)3(9)11-4(10)2(7)8/h1-2H | | InChIKey | QNRXDQIHPGZCFB-UHFFFAOYSA-N | | SMILES | C(=O)(C(F)F)OC(=O)C(F)F | | CAS DataBase Reference | 401-67-2 |
| Hazard Codes | C | | RIDADR | 3265 | | HazardClass | CORROSIVE | | PackingGroup | II | | HS Code | 29189900 |
| | Difluoroacetic anhydride Usage And Synthesis |
| Application | Difluoroacetic anhydride is mainly used as an acylation reagent in organic synthesis to introduce difluoroacetyl groups. Difluoroacetate is mainly used as an intermediate in pesticides, pharmaceuticals, and fluorine-containing fine chemicals, and can also be used as a solvent in lithium battery electrolytes. | | Chemical Properties | Light yellow liquid | | Synthesis | 1. Difluoroacetic acid reacts with phosphorus pentoxide. Distillation yields difluoroacetic anhydride.
2. More difluoroacetic acid is added to the residue from step 1. Distillation gives a mixture containing the anhydride.
3. Difluoroacetic acid and methanol are added to the residue from step 2. Distillation yields methyl difluoroacetate.
4. The mixture from step 2 is reacted with phosphorus pentoxide. Distillation yields more difluoroacetic anhydride. |
| | Difluoroacetic anhydride Preparation Products And Raw materials |
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