Solubilities Measurement of the Ternary Systems LaY3-BAPHDCA-H2O(Y=NO3-, Cl-) at 30℃

Abstract

Abstract: The solubilities and refractive indexes of saturated solutions of the ternarysystems LaY₃-BAPHDCA--H₂O (Y=NO₃^-, Cl^-) at 30℃ were studied and the correspondingequilibrium diagrams were constructed.The solubility curves and refractive index curves ofnitrate systems consist of three branches, corresponding to BAPHDCA, La (BAPHDCA)(NO₃)₃· 4H₂Oand La(NO₃)₃· 6H₂O.The complex is incongruently soluble in water.Theeutectic compositions (%) are: La (NO₃)₃ 25.25, BAPHDCA 0.91 and La (NO₃)₃, 60.15,BAPHDCA 0.45.The tenary complex was characterized by chemical analysis, elementaryanalysis, IRspectra,TG-DTGand X-ray power diffraction.The system of chloride is asimple one.The eutectic composition is LaCl₃49.12%, BAPHDCA 0.82%.

Key words: N,N'-Bis (antipyrine-4'-yl)-hexanedicarboxamide, Rare earth complex, Ternary system

CLC Number:

O642

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CUI Bin, TANG Zong-Xun, GUO Zhi-Zhen, CHEN Kai-Xun. Solubilities Measurement of the Ternary Systems LaY₃^-BAPHDCA-H₂O(Y=NO₃^-, Cl^-) at 30℃[J]. Chem. J. Chinese Universities, 1997, 18(11): 1742.

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Solubilities Measurement of the Ternary Systems LaY₃^-BAPHDCA-H₂O(Y=NO₃^-, Cl^-) at 30℃

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