Abstract:

The determination ofactive component of1-hydroxyethylidene-1, 1-diphosphonic acid(HEDPA) simply with densityhas been established.The test results showthat densityand the total phosphorus content ofHEDPAhave linear relationship.The content of phosphorus can be converted by subtracting the contents of impurities, namely phosphorous acid and orthophosphoric acid, sothat the content ofactive component can be determined directly with density.This technique is simple and accurate, and can provide reference for industries in makinguse ofHEDPA.

Key words: density, total phosphorus, active components

摘要：

建立了通过测量密度简易测定羟基亚乙基二膦酸(HEDPA)活性组分的方法。通过实验发现密度与HEDPA中总磷含量呈线性关系，减去杂质即亚磷酸和正磷酸含量换算出磷含量，即可通过测量密度直接测出活性组分的含量。新方法简便易行，准确度高，可以为企业生产、使用羟基亚乙基二膦酸(HEDPA)提供依据。

关键词: 密度, 总磷, 活性组分

CLC Number: 

• O656.31