Solubility Measurement of the Ternary Systems 4-ClCH2COAP-La (NO3)3-H2O and 4-ClCH2COAP-LaCl3-H2O (30℃)

Abstract

Abstract: The solubilities and the refractive indexes of saturated solutions of the ternary systems 4ClCH₂COAP-LaY₃-H₂O(Y=NO₃^-, Cl^-) at 30℃ were studied and the corresponding equilibrium diagrams were constructed. The solubility curves and refractive index curves of nitrate systems consist of three branches, corresponding to 4-ClCH₂COAP, La(4-ClCH₂COAP)₂(NO₃)₃ and La(NO₃)₃·6H₂O. The ternary complex is incongruently soluble in water. The eutectic compositions are: La(NO₃)₃ 49.80%, 4-ClCH₂COAP0. 85% and La(NO₃)₃ 60.63%, 4-ClCH₂COAP 0.56%. The system of chloride is a simple one. The eutectic composition is LaCl₃ 48.39％, 4-ClCH₂COAP 0.28%. The IRspectra and the X-ray powder diffraction of the ternary complex were studied too.

Key words: 4-Chloroacetylantipyrine, Rare earth complex, Ternary system

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Xu Xing-ling, Tang Zong-xun, Guo Zhi-zhen, Chen Yun-sheng . Solubility Measurement of the Ternary Systems 4-ClCH₂COAP-La (NO₃)₃-H₂O and 4-ClCH₂COAP-LaCl₃-H₂O (30℃)[J]. Chem. J. Chinese Universities, 1991, 12(6): 728.

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Solubility Measurement of the Ternary Systems 4-ClCH₂COAP-La (NO₃)₃-H₂O and 4-ClCH₂COAP-LaCl₃-H₂O (30℃)

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