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| | 4,4'-Oxydiphthalic anhydride Basic information | | Description |
| Product Name: | 4,4'-Oxydiphthalic anhydride | | Synonyms: | 4,4'-Oxydiphthalic Anhydride (purified by subliMation);4,4 '-diphenylether twoanhydride;1,3-Isobenzofurandione, 5,5'-oxybis-;Bis-(3-phthalyl anhydride) ether SynonyMs 4,4'-Oxydiphthalic anhydride;4,4''-Oxybisdiphthalic a;s-ODPA;5,5'-oxybis(2-benzofuran-1,3-dione);a-ODPA 2,3,3,4'-oxydiphthalic anhydride 4,4'-oxydiphthalic Anhydride in stock Factory | | CAS: | 1823-59-2 | | MF: | C16H6O7 | | MW: | 310.21 | | EINECS: | 412-830-4 | | Product Categories: | fine chemicals, specialty chemicals, intermediates, electronic chemical, organic synthesis, functional materials;fine chemicals, specialty chemicals, intermediates, electronic chemical, organic synthesis;Industrial/Fine Chemicals;Anhydride Monomers;Monomers;Polymer Science;Aromatic Tetracarboxylic Dianhydrides (for High-Performance Polymer Research);Diphenyl Ethers (for High-Performance Polymer Research);Functional Materials;Reagent for High-Performance Polymer Research;strong recommend;1823-59-2 | | Mol File: | 1823-59-2.mol |  |
| | 4,4'-Oxydiphthalic anhydride Chemical Properties |
| Melting point | 225-229 °C(lit.) | | Boiling point | 410.39°C (rough estimate) | | density | 1.4942 (rough estimate) | | refractive index | 1.6380 (estimate) | | storage temp. | Inert atmosphere,Room Temperature | | solubility | very slightly in Toluene,Acetone | | form | powder to crystal | | color | White to Light yellow to Light orange | | InChI | InChI=1S/C16H6O7/c17-13-9-3-1-7(5-11(9)15(19)22-13)21-8-2-4-10-12(6-8)16(20)23-14(10)18/h1-6H | | InChIKey | QQGYZOYWNCKGEK-UHFFFAOYSA-N | | SMILES | O(C1C=CC2C(=O)OC(=O)C=2C=1)C1C=CC2C(=O)OC(=O)C=2C=1 | | CAS DataBase Reference | 1823-59-2(CAS DataBase Reference) | | NIST Chemistry Reference | Bis-(3-phthalyl anhydride) ether(1823-59-2) | | EPA Substance Registry System | 1,3-Isobenzofurandione, 5,5'-oxybis- (1823-59-2) |
| Risk Statements | 52/53 | | Safety Statements | 61 | | WGK Germany | 2 | | HS Code | 29189900 |
| | 4,4'-Oxydiphthalic anhydride Usage And Synthesis |
| Description |
4,4'-Oxydiphthalic anhydride/ODPA(CAS:1823-59-2) is a solid, melts in the range of 225-229 °C and was first introduced in the mid-1980s, offering a greater degree of flexibility than other commercial dianhydrides. It also is somewhat less reactive than BTDA. ODPA has largely been used in polyimides and much less so in epoxies. It imparts special performance properties in free films and in FCCL production for high-end personal electronic devices.
| | Chemical Properties | off-white to white powder | | Uses | 4,4'-oxydiphthalic anhydride be used for the preparation of a polyimide material. | | Preparation | The preparation of 4,4'-Oxydiphthalic anhydride is as follows:Chlorophthalic anhydride (30g, 160mmol), tetraphenyl phosphonium bromide (0.3g, 0.7mmol), and 2,5-dichlorobenzoic acid (0.08g, 0.4mmol) were heated to approximately 220℃. Potassium carbonate (7.95g, 58mmol) was added over 45 minutes. The reaction was sampled after addition of the potassium carbonate and showed a 24.9% conversion to 4,4'-oxydiphthalic anhydride. The reaction was heated for an additional 45 minutes. The reaction mixture was diluted with 1,2,4-trichlorobenzene (90g) and filtered. The 4,4'-oxydiphthalic anhydride was allowed to crystallize and was collected, washed with 1,2,4-trichlorobenzene followed by hexane, and dried in an air circulating oven at 120℃. to give crude 4,4'-oxydiphthalic anhydride, 12.9g. 
| | Flammability and Explosibility | Notclassified |
| | 4,4'-Oxydiphthalic anhydride Preparation Products And Raw materials |
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