What is the significance of Binodal curve represented in Liquid liquid extraction ternary diagram? And how to obtain it?

03 March 2017 0 4K Report

In Ternary diagram of L-L Extraction there is a binodal curve inside it. What does it actually signify (What information do I get from it?)? How to read it?

Also is it obtained experimentally or is there any other technique?

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