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- -20 °C
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- 85-86°C 17mm
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- 1,094 g/cm3
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- 77°C
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- 2-8°C
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- ?????(??), ???????(??)? ???
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- InChI
- InChI=1S/C6H6O3/c1-3-5(7)9-6(8)4-2/h3-4H,1-2H2
- InChIKey
- ARJOQCYCJMAIFR-UHFFFAOYSA-N
- SMILES
- C(=O)(C=C)OC(=O)C=C
- CAS ??????
- 2051-76-5(CAS DataBase Reference)
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- ?? ? ???? ?? (GHS)
?? ???? ?? | 14-20/21/22-34 | ||
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????? | 26-36/37/39-45 | ||
????(UN No.) | 3265 | ||
?? ?? | 8 | ||
???? | II | ||
HS ?? | 2916199590 |
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Acrylic anhydride can be used to prepare specialty acrylate, acrylamide monomers or acrylic resin. It forms cyclic anhydrides on polymerization and can not be used as a crosslinker.Synthesis
The synthesis of Acrylic anhydride is as follows:In a 3-liter, four-necked glass reactor provided with a thermometer and a stirrer were placed, in a dry air atmosphere, 1,240 g of methylene chloride, 1.08 g (0.5% by mass) of Sumilizer GM, 0.65 g (0.3% by mass) of Sumilizer TP-D, 0.65 g (0.3% by mass) of Sumilizer WX-R, 216 g (3.0 mol) of acrylic acid and 264 g (1.5 mol) of benzenesulfonyl chloride. The mixture was cooled to 5°C. Then, 304 g (3.0 mol, 1 equivalent relative to the acids generated from benzenesulfonyl chloride) of triethylamine was dropwise added in 2 hours with the temperature of the reaction mixture being controlled at 30°C or lower. After the completion of the dropwise addition, stirring was made for 1 hour with the same temperature being kept. The reaction mixture was analyzed by GC, which indicated that the conversion of acrylic acid was 99%. After the completion of the reaction, 375 g of water was added to the reaction mixture to wash the reaction mixture. The reaction mixture was further washed twice each time with 563 g of water, after which distillation was conducted to remove methylene chloride. The yield of the acrylic acid anhydride obtained was 172 g and 91% and its purity by GC analysis was 99%, and no high-molecular by-product was detected.
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