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1·Note. (1) The dichloromethane is distilled from phosphorus pentoxide and stored over molecular sieves.

注意事项(1)二氯甲烷加入五氧化二磷蒸馏，加入分子筛储存。

2·The method was used to determine the content of di-phosphorus pentoxide in phosphoric acid and the result was satisfactory.

本方法用于测定磷酸中五氧化二磷的含量，获得满意结果。