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Chem. J. Chinese Universities ›› 1987, Vol. 8 ›› Issue (7): 585.

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Solubility Isotherms for the Quaternary System H3BO3-MgSO4-MgCl2-H2O at 273.15+0.05K

Gao Zili, Gao Huade, Wu Bingli, Niu Yaozong, Yin Jingzhi   

  1. Department of Chemistry, Shandong University, Jinan
  • Received:1986-03-25 Online:1987-07-24 Published:1987-07-24

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Abstract: The quaternary system of H3BO3-MgSO4-MgCl2-H2O has been investigated at 273.15+0.05K by means of the isothermal method. This system is composed of three simple ternary systems:H3BO3-MgCl2-H2O (Ⅰ), H3BO3-MgSO4-H2O (Ⅱ) and MgCl3-MgSO4-H2O (Ⅲ). The solid phases identified are. (Ⅰ) H3BO3+MgCl2·6H3O;(Ⅱ) H3BO3+MgSO4·7H3O and (Ⅲ) MgCl2·6H2O+MgSO4·7H3O.There are three regions of the solid phases:H3BO3, MgCl2·6H2O and MgSO4· 7H2O in the central projection diagram. The eutectic point is at 33.44 Wt% MgCl2, 1.77% MgSO4and 0.65% H3BO3.

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