五氧化二磷是正磷酸(H3PO4)的酸酐。
Phosphorous acid is the acid anhydride of orthophosphoric acid (h 3 PO 4).
本方法用于测定磷酸中五氧化二磷的含量，获得满意结果。
The method was used to determine the content of di-phosphorus pentoxide in phosphoric acid and the result was satisfactory.
“干燥器中”：采用五氧化二磷试剂干燥，大气压，室温。
"in a desiccator": the drying is carried out over diphosphorus pentoxide R at atmospheric pressure and at room temperature;
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.
叙述了共存水对二氧化碳测定的干扰及其用五氧化二磷的脱除方法。
The interference of coexistent water with the CO2 and the method for removing the water by P2O5 trap are described.
简要介绍了使用五氧化二磷作为磷酸化试剂合成磷酸酯的工艺过程改进，以及磷酸单双酯含量检测的常用方法。
The modification of synthesizing processes of phosphates with P2O5 and testing method of the content of monoester and diester were introduced briefly.
研究了水合五氧化二锑磷钼酸铵复合无机离子交换剂的制备和交换性能。
A new complex ion exchanger, hydrated antimony pentoxide ammonium molybdophosphate, is prepared and its exchanging capacity is studied.
研究了水合五氧化二锑磷钼酸铵复合无机离子交换剂的制备和交换性能。
A new complex ion exchanger, hydrated antimony pentoxide ammonium molybdophosphate, is prepared and its exchanging capacity is studied.
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