Abstract
(Liquid + liquid) equilibrium tie-lines were measured for one ternary system { x 1H 2O + x 2CH 3C(CH 3) 2OCH 3 + (1 − x 1 − x 2)(CH 3) 2CHOCH(CH 3) 2} and one quaternary system { x 1H 2O + x 2CH 3C(CH 3) 2OCH 3 + x 3(CH 3) 2CHOCH(CH 3) 2 + (1 − x 1 − x 2 − x 3)C 6H 5CH 3} at T = 298.15 K and P ∘ = 101.3 kPa. The experimental (liquid + liquid) equilibrium results have been satisfactorily correlated by modified and extended UNIQUAC models both with ternary and quaternary parameters in addition to binary ones.
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