Solubility of potassium dihydrogen phosphate in aqueous solutions of acetone, ethyl acetate, and thiourea from T=(298.15-313.15)K

Bing Han*, Zuoliang Sha, Jaakko I. Partanen, Marjatta Louhi-Kultanen

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

The solubility values of potassium dihydrogen phosphate in binary mixtures of acetone + water, ethyl acetate + water, and thiourea + water were measured using a gravimetric method in a temperature range of (298.15-313.15). K. All results from these measurements were correlated using a simplified Pitzer approach. The relationship obtained between the Pitzer parameter concerning the interactions of ions and non-electrolyte molecules (=λ) and temperature applies well to the solubility data in the ternary systems tested. The values of λ parameter were also compared to those obtained in the literature (Y. Enqvist, J. Partanen, M. Louhi-Kultanen, J. Kallas, Trans IChemE A, 81 (2003) 1355-1362) for systems urea + water, ethanol + water, and 1-propanol + water.

Original languageEnglish
Pages (from-to)16-21
Number of pages6
JournalFluid Phase Equilibria
Volume336
DOIs
Publication statusPublished - 25 Dec 2012
MoE publication typeA1 Journal article-refereed

Keywords

  • Activity coefficient
  • Aqueous mixture
  • Potassium dihydrogen phosphate
  • Solubility
  • Ternary system

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