二苄叉法测定季戊四醇含量的改进

The improvement of determination for pentaerythritol content by dibenzylidene method

为了提高季戊四醇含量测定的准确性。二苄叉法测定季戊四醇含量方法中,沉淀的洗涤和收集至关重要,在多孔玻璃坩埚上加一层滤纸,使生成的沉淀物不能浸入多孔玻璃坩埚内,增加了结果的准确性,同时洗涤方法更方便、快捷。

To improve the determination accuracy of pentaerythritol content by dibenzylidene method, it was directly related to the accuracy of pentaerythritol content determination if the porous glass crucible is washed clean. A layer of filter paper was added, so that the resulting precipitate on a porous glass crucible could not be immersed in the porous glass crucible. The accuracy of the results was improved, and the washing process is more convenient and fast.