The previously proposed correlations were examined for ternary systems represented the unit of concentration in mole fractions.
In the region of solute concentration below about 10mol%, an almost straight line was obtained by the plots on logarithmic coordinate of liquid-liquid equilibrium ratio (
y/x) against mole fraction of solute in organic layer (
x) or in water layer (
y). As compared with the proposed correlation in weight fraction, the correlation in mole fraction was hold wider concentration region.
For the system showed maximum value on the distribution curve the tie-line data was expressed by the Raoult-type equation. But the correlation line was slightly curved upward.
In the region of solute concentration near plait point, the author's correlation by mole fraction show nearly straight line as well as by weight fraction.
These correlations may be applied for ternary organic system.
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