| Identification | More | [Name]
Cyclobutane-1,2,3,4-tetracarboxylic dianhydride | [CAS]
4415-87-6 | [Synonyms]
1,2,3,4-CYCLOBUTANETETRACARBOXYLIC DIANHYDRIDE
CYCLOBUTANE-1,2,3,4-TETRACARBOXYLIC DIANHYDRIDE
tetrahydrocyclobuta[1,2-c:3,4-c']difuran-1,3,4,6-tetraone
1,2,3,4-CYCLOBUTANETETRACARBOXYLIC DIAN&
Maleic anhydride cyclic dimer.
Cyclobutanetetracarboxylic Dianhydride
1,2,3,4-cyclobutanetetracarboxylic acid dianhydride
1,2,3,4-Cyclobutanetetracarboxylic 1,2:3,4-dianhydride
Cyclobutanetetracarboxylic acid dianhydride
1,2,3,4-Cyclobutanetetracarboxylic acid 1,2:3,4-dianhydride
1,2,3,4-Cyclobutanetetracarboxylic acid-1,2:3,4-dianhydride
3a,3b,6a,6b-Tetrahydrocyclobuta[1,2-c:3,4-c']difuran 1,3,4,6-tetrone
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 | [EINECS(EC#)]
224-577-5 | [Molecular Formula]
C8H4O6 | [MDL Number]
MFCD00004944 | [Molecular Weight]
196.11 | [MOL File]
4415-87-6.mol |
| Chemical Properties | Back Directory | [Melting point ]
>300 °C (lit.) | [Boiling point ]
545.3±50.0 °C(Predicted) | [density ]
1.823±0.06 g/cm3(Predicted) | [storage temp. ]
Inert atmosphere,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) | [Storage Precautions]
Store under inert gas;Moisture sensitive |
| Safety Data | Back Directory | [Hazard Codes ]
Xi | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing . | [RIDADR ]
1759 | [WGK Germany ]
3
| [F ]
9-21 | [HazardClass ]
8 | [PackingGroup ]
III | [HS Code ]
29172090 |
| Hazard Information | Back Directory | [Chemical Properties]
White to light yellow solid | [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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