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| | Cyclobutane-1,2,3,4-tetracarboxylic dianhydride Basic information |
| Product Name: | Cyclobutane-1,2,3,4-tetracarboxylic dianhydride | | Synonyms: | 3a,3b,6a,6b-Tetrahydrocyclobuta[1,2-c:3,4-c']difuran-1,3,4,6-tetrone;4,9-Dioxatricyclo[5.3.0.02,6]decane-3,5,8,10-tetrone;Cyclobutane 1,2,3,4-tetracarboxylic acid 1,2:3,4-dianhydride;Cyclobutane-1,2,3,4-tetracarboxylic dianhydride ,98%;Cyclobutane-1,2,3,4-tetracarboxylic acid dianhydride (CBDA);Cyclobutane-1,2,3,4-tetracarboxylic;1,2,3,4-Cyclobutanetetracarboxylic Dianhydride (purified by sublimation);Cyclobuta[1,2-c:3,4-c']difuran-1,3,4,6-tetrone,tetrahydro- | | CAS: | 4415-87-6 | | MF: | C8H4O6 | | MW: | 196.11 | | EINECS: | 224-577-5 | | Product Categories: | Fluorenes, etc. (reagent for high-performance polymer research);Functional Materials;Reagent for High-Performance Polymer Research;Carbonyl Compounds;Carboxylic Acid Anhydrides;Organic Building Blocks;fine chemicals, specialty chemicals, intermediates, electronic chemical, organic synthesis, Organic Building Blocks;fine chemicals, specialty chemicals, intermediates, electronic chemical, organic synthesis, pharmaceutical intermediates;monomer | | Mol File: | 4415-87-6.mol |  |
| | Cyclobutane-1,2,3,4-tetracarboxylic dianhydride Chemical Properties |
| Melting point | >300 °C (lit.) | | Boiling point | 545.3±50.0 °C(Predicted) | | density | 1.823±0.06 g/cm3(Predicted) | | storage temp. | under inert gas (nitrogen or Argon) at 2-8°C | | solubility | soluble in Toluene | | form | powder to crystal | | color | White to Light yellow | | BRN | 1430553 | | CAS DataBase Reference | 4415-87-6(CAS DataBase Reference) |
| Hazard Codes | Xi | | Risk Statements | 36/37/38 | | Safety Statements | 26-36 | | RIDADR | 1759 | | WGK Germany | 3 | | F | 9-21 | | HazardClass | 8 | | PackingGroup | III | | HS Code | 29172090 |
| | Cyclobutane-1,2,3,4-tetracarboxylic dianhydride Usage And Synthesis |
| Chemical Properties | White to light yellow solid | | Uses | Reactant for:
- Preparation of biologically and pharmacologically active molecules
- Preparation of photosensitive polyimide material for high performance organic thin-film transistors
- Selective crosslinking of polyimide for photonic devices
| | Uses | cyclobutane-1,2,3,4-tetracarboxylic dianhydride and diamine monomer are used for preparation a polyimide (PI), the type of polyimide has excellent electrical characteristics and optical type, with the material prepared the PI film, in addition to having a higher rate cast visible outside, and can withstand high temperatures thirty-four Baidu. Its performance is very good, is the preparation of a liquid crystal display with an ideal material for the film. | | Preparation | Preparation of 1,2,3,4- cyclobutanetetracarboxylic acid dianhydride (CBDA)To a 2L quartz glass photoreactor equipped with sixteen UV lamps (300nm) , a stirrer and a cooler were attached and 250ml of ethyl acetate and 100g of maleic anhydride were added thereto followed by stirring for complete mixing. To avoid an excessive temperature increase, an air-cooling type cooler was first run and then UV light was illuminated for a photoreaction for 24h with stirring so as not to have the reactants adhered to the reactor walls. As a result, 71g of white solid was obtained. After the filtration, the white solid was dried for 24h in a vacuum dryer at 60°C Thus-obtained solid was then added to acetic anhydride, dissolved therein and slowly heated to 150°C followed by the reaction for 24h . Hot reaction solution was filtered through a filter paper to remove impurities and kept in a freezer at the temperature of 0°C or less for recrystallization for 24h to obtain a yellow solid. Thus-obtained solid was filtered and washed three times with 1,4-dioxane to remove acetic anhydride, and then dried in a vacuum oven at 60°C for 48h to obtain 64g of 1, 2, 3, 4 -cyclobutane tetracarboxylic acid dianhydride (CBDA) . 
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| | Cyclobutane-1,2,3,4-tetracarboxylic dianhydride Preparation Products And Raw materials |
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