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。
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。
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。
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