Study on the isothermal solubility of quaternary systems KCl(K2SO4)-MgCl2 (MgSO4)-CO(NH2)2-H2O

被引：3

作者：

Wei, XL ^{[1
]}

Zhang, FX ^{[1
]}

Guo, ZZ ^{[1
]}

Shi, QZ ^{[1
]}

机构：

[1] NW Univ Xian, Dept Chem, Xian 710069, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 1998年 / 14卷 / 03期

关键词：

quaternary system; phase equilibrium; solubility; potassium chloride; magnesium chloride; potassium sulfate; magnesium sulfate; urea;

D O I：

10.3866/PKU.WHXB19980309

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The solubilities refraction indices and densities of the saturated solutions of the titled quaternary systems at 25 degrees C have been investigated for the first time and their solubility diagrams, property diagrams have been constructed. In the solubility diagrams, there are five crystallization regions corresponding to KCl, MgCl2. 6H(2)O, CO(NH2)(2), MgCl2. 4CO(NH2)(2). 2H(2)O and MgCl2. CO(NH2)(2). 4H(2)O, respectively for KCl-MgCl2-CO(NH2)(2)-H2O system; four crystallization regions corresponding to K2SO4, MgSO4. 7H(2)O, CO(NH2)(2) and K2SO4. MgSO4. 6H(2)O, respectively for system K2SO4-MgSO4-CO(NH2)(2)-H2O system.

引用

页码：237 / 242

页数：6