Alkane-Insoluble Trialkylammonium Double Salts Involving the Dodecamolybdophosphate Anion. Iii. Nature of a Liquid Third Phase

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Abstract

The composition of a liquid third phase involving the dodecamolybdophosphate (DMP) anion PMo12o403-wasexamined using the solvent 0.05 M tri-n-octylamine (TOA) as the sulfate and bisulfate salts in n-nonane modified with 0.05 M n-dodecanol. In a loading experiment, DMP was exchanged in increasing amounts for the organic-phase sulfate and bisulfate with the simultaneous formation of a third phase. Measurement of the TOA, DMP, and dodecanol remaining in the light organic phase showed that the observed liquid third phase is a mixed-salt solution containing primarily (T0AH)3[DMP], (T0AH)2S04, and (T0AH)HS04in variable proportions. Dissolution of the inherently insoluble salt (T0AH)3[DMP] in the modified diluent is accomplished mainly via the solubilizing influence of the more soluble sulfate and bisulfate salts.

Original languageEnglish
Pages (from-to)195-203
Number of pages9
JournalSolvent Extraction and Ion Exchange
Volume5
Issue number1
DOIs
StatePublished - Jan 2 1987

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