Solubility and physic-chemical properties of NaH2PO4 in phosphoric acid, sodium chloride and their mixture solutions at T = (298.15 and 313.15) K. (November 2015)

• Record Type: Journal Article
• Authors: Zhang, Xiaorui; Liu, Chengqi; Shen, Wei; Ren, Yongsheng; Li, Danyang; Yang, Huiling
• Is Part Of: Journal of chemical thermodynamics. Volume 90(2015:Nov.)
• Page Start: 185
• Page End: 192
• Publication Date: 2015-11
• Subjects: Sodium dihydrogen phosphate -- Phosphoric acid -- Sodium chloride -- Physic-chemical property -- Solubility; Thermodynamics -- Periodicals; Thermochemistry -- Periodicals; Thermodynamique -- Périodiques; Thermochimie -- Périodiques; Thermochemistry; Thermodynamics; Periodicals; 541.369
• DOI: 10.1016/j.jct.2015.06.038
• Languages: English
• ISSNs: 0021-9614

Abstract

Highlights: Solubility and physic-chemical properties of NaH2 PO4 in H3 PO4 solutions were obtained. Solubility and physic-chemical properties of NaH2 PO4 in NaCl solutions were obtained were obtained. Solubility and physic-chemical properties of NaH2 PO4 in mixed solutions of H3 PO4 and NaCl were obtained. The solubility diagrams and the physic-chemical property diagrams were plotted. Abstract: In this study, solubility and physic-chemical properties of sodium dihydrogen phosphate in sodium chloride, phosphoric acid and their mixture solutions at T = (298.15 and 313.15) K have been investigated by using isothermal dissolution method. In the three systems, the solubility of NaH2 PO4 always increases with the temperature increasing and decreases with molar concentration of phosphoric acid (sodium chloride) increasing because of the same ion effect. Solubility data of sodium dihydrogen phosphate in the mixed solution of sodium chloride and phosphoric acid is basically required for designing and optimizing the solvent extraction process in the industrial production.