实验记录与处理共加入4.0g蒽与2.2g马来酸酐，产品为灰白色固体，理

实验记录与处理
共加入4.0g蒽与2.2g马来酸酐，产品为灰白色固体，理论产量为6.2g，小组平均产量5.7g，平均产率91.9%，测得熔程为264℃-266℃。
实验注意事项
1.顺丁烯二酸酐及其加成产物都易水解成相应二元羧酸，故所用全部仪器、试剂及溶剂均需干燥，并注意防止水或水汽进入反应系统。
2.加热回流时，有较多泡沫出现，应控制好反应温度与回流速度，防止产品损失。

結果 (英文) 1:

Experimental recording and processingCo-4.0g anthracene and maleic anhydride 2.2G, products for the gray-white solid, theoretical yield 6.2G, group average 5.7g average 91.9% yield measured melting point is 264-266 c.Experimental considerations1. maleic anhydride and its addition product is easily hydrolyzed to the corresponding dicarboxylic acids, therefore all apparatus, reagents and solvents must be dry, and pay attention to prevent water or water vapor from entering the reaction system.2. when heated to reflux, with more bubbles, should control the reaction temperature and the return rate to prevent product loss.

結果 (英文) 2:

Experiment recording and processing
a total of 2.2g was added 4.0g of anthracene and maleic anhydride, an off-white solid product, the theoretical yield of 6.2g, group average yield 5.7g, the average yield of 91.9%, measured melting range of 264 ℃ -266 ℃.
Experiment Notes
1. maleic anhydride and its addition products are easily hydrolyzed to the corresponding dicarboxylic acid, it is used by all the instruments, reagents and solvents required drying, and pay attention to prevent water or steam into the reaction system.
2. When heated to reflux, with more foam appears, should control the reaction temperature and the reflux rate, prevent product loss.

結果 (英文) 3:

Record and process of experimentThe total addition of 4.0g and 2.2g maleic anhydride, the product is a gray white solid, theoretical yield of 6.2g, the average yield of 5.7g group, the average yield of 91.9%, the measured melting process is 264 -266.Experimental note1 maleic anhydride and its addition products are easy to hydrolysis into the corresponding two acid, so the whole apparatus, reagents and solvents are required to dry, and pay attention to prevent water or water vapor into the reaction system.2 heating reflux, there are more bubbles appear, should control the reaction temperature and reflux rate, prevent product loss.