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Chemical Research in Chinese Universities ›› 1995, Vol. 11 ›› Issue (3): 206-214.

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Studies on Systems of Lithium and Potassium Halides from Salt Lake and Bittern Resources ( V)──The Quaternary Reciprocal System Li+,Br-,I--H2O and Boundary Ternary System NH4Br-NH4I-H2O at 25℃

TANG Zong-xun, ZHANG Feng-xing, GUO Zhi-zhen, HUANG Jing-ying, HAO Zhi-feng   

  1. Department of Chemistry, Northwestern University, Xi'an, 710069
  • Received:1994-11-16 Online:1995-08-24 Published:2011-08-17

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Abstract: The solubilities, refractive indexes of saturated solutions of the quaternary re-ciprocal system Li+,NH4+|| Br-,I--H2O and its boundary ternary system NH4Br-NH4I-H2O at 25℃ have been investigated using isothermal method.In the titleternary system which belongs to Roozeboom Ⅳ type, there are two limited solid so-lutions.Entering into the quaternary system, the region of the solid solutions re-duces and disappears with the increase of Li+, and finally, the quaternary systembecomes a simple system.

Key words: Quaternary reciprocal system, Lithium bromide, Ammonium bromide, Lithium iodide, Ammonium iodide.