Solubility of KH2PO4 in KCl, H3PO 4, and their mixture solutions

Fang Zhao; Yangcheng Lu; Kai Wang; Guangsheng Luo

doi:10.1021/je400911m

Solubility of KH₂PO₄ in KCl, H₃PO ₄, and their mixture solutions

Fang Zhao
, Yangcheng Lu
, Kai Wang
, Guangsheng Luo^*

^*Corresponding author for this work

Tsinghua University

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

The solubility data of KH₂PO₄ in the mixed solution of KCl and H₃PO₄ is basically required for designing and optimizing the preparation process of KH₂PO₄ from KCl and H₃PO₄ using solvent extraction. In this study, the solubility of KH₂PO₄ in KCl, H₃PO₄, and their mixture solutions has been measured respectively at temperatures of (288.2, 298.2 and 308.2) K. In KCl solutions, the solubility of KH ₂PO₄ decreases as the concentration of KCl increases before KCl begins to precipitate. In H₃PO₄ solutions, the solubility of KH₂PO₄ increases as the concentration of H₃PO₄ increases. In mixed solutions of approximately equimolar KCl and H₃PO₄, the solubility of KH ₂PO₄ decreases a little first and then increases remarkably with the increase of KCl (H₃PO₄) concentration. In the three systems studied, the solubility of KH₂PO₄ always increases with increasing temperature.

Original language	English
Pages (from-to)	439-443
Number of pages	5
Journal	Journal of Chemical and Engineering Data
Volume	59
Issue number	2
DOIs	https://doi.org/10.1021/je400911m
State	Published - 13 Feb 2014
Externally published	Yes

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title = "Solubility of KH2PO4 in KCl, H3PO 4, and their mixture solutions",

abstract = "The solubility data of KH2PO4 in the mixed solution of KCl and H3PO4 is basically required for designing and optimizing the preparation process of KH2PO4 from KCl and H3PO4 using solvent extraction. In this study, the solubility of KH2PO4 in KCl, H3PO4, and their mixture solutions has been measured respectively at temperatures of (288.2, 298.2 and 308.2) K. In KCl solutions, the solubility of KH 2PO4 decreases as the concentration of KCl increases before KCl begins to precipitate. In H3PO4 solutions, the solubility of KH2PO4 increases as the concentration of H3PO4 increases. In mixed solutions of approximately equimolar KCl and H3PO4, the solubility of KH 2PO4 decreases a little first and then increases remarkably with the increase of KCl (H3PO4) concentration. In the three systems studied, the solubility of KH2PO4 always increases with increasing temperature.",

author = "Fang Zhao and Yangcheng Lu and Kai Wang and Guangsheng Luo",

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doi = "10.1021/je400911m",

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T1 - Solubility of KH2PO4 in KCl, H3PO 4, and their mixture solutions

AU - Zhao, Fang

AU - Lu, Yangcheng

AU - Wang, Kai

AU - Luo, Guangsheng

PY - 2014/2/13

Y1 - 2014/2/13

N2 - The solubility data of KH2PO4 in the mixed solution of KCl and H3PO4 is basically required for designing and optimizing the preparation process of KH2PO4 from KCl and H3PO4 using solvent extraction. In this study, the solubility of KH2PO4 in KCl, H3PO4, and their mixture solutions has been measured respectively at temperatures of (288.2, 298.2 and 308.2) K. In KCl solutions, the solubility of KH 2PO4 decreases as the concentration of KCl increases before KCl begins to precipitate. In H3PO4 solutions, the solubility of KH2PO4 increases as the concentration of H3PO4 increases. In mixed solutions of approximately equimolar KCl and H3PO4, the solubility of KH 2PO4 decreases a little first and then increases remarkably with the increase of KCl (H3PO4) concentration. In the three systems studied, the solubility of KH2PO4 always increases with increasing temperature.

AB - The solubility data of KH2PO4 in the mixed solution of KCl and H3PO4 is basically required for designing and optimizing the preparation process of KH2PO4 from KCl and H3PO4 using solvent extraction. In this study, the solubility of KH2PO4 in KCl, H3PO4, and their mixture solutions has been measured respectively at temperatures of (288.2, 298.2 and 308.2) K. In KCl solutions, the solubility of KH 2PO4 decreases as the concentration of KCl increases before KCl begins to precipitate. In H3PO4 solutions, the solubility of KH2PO4 increases as the concentration of H3PO4 increases. In mixed solutions of approximately equimolar KCl and H3PO4, the solubility of KH 2PO4 decreases a little first and then increases remarkably with the increase of KCl (H3PO4) concentration. In the three systems studied, the solubility of KH2PO4 always increases with increasing temperature.

UR - https://www.scopus.com/pages/publications/84894034482

U2 - 10.1021/je400911m

DO - 10.1021/je400911m

M3 - 文章

AN - SCOPUS:84894034482

SN - 0021-9568

VL - 59

SP - 439

EP - 443

JO - Journal of Chemical and Engineering Data

JF - Journal of Chemical and Engineering Data

IS - 2

ER -

Solubility of KH₂PO₄ in KCl, H₃PO ₄, and their mixture solutions

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