Abstract
A change in the physical state of diphenyl(dibutylcarbamoylmethyl)phosphine oxide (DφDBCMPO) upon contact with an acidic solution is described and the composition of the complex formed by the reagent and the acid is established. The quantitative characteristics of the extraction capacity of this complex are found using praseodymium as an example, and the advantages of using 100% DφDBCMPO are shown.
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