25 ℃에서 NaCl salt를 포함하지 않은 3성분계 monochlorobenzene（1）-water(2)-acetone(3)에 대한 염효과를 예측하기 위하여 NaCl salt solution을 각각의 중량분을 5 %, 10 %, 15 %, 20 %, 25 %로 포화농도까지 제조하여, monochlobenzene(1)-NaCl salt solution(2)-acetone(3)계에 대한 용해도곡선을 측정하여 tie line을 결정하였다.
Tie line 데이터는 Eisen-Joffe식에 상호연관시켜 건전성을 판정하였다.
염을 포함한 4성분계의 액-액 평형은 염을 제하면 염을 포함하지 않은 3성분계의 액-액 평형으로 된다고 가정하였다.
NaCl salt를 첨가한 용해도 곡선은 NaCl salt을 첨가하지 않을 때와 비교되었으며, tie line 실험치를 UNIQUAC, modified UNIQUAC모델에 상호연관시켜 모델 중의 parameter를 결정하고, tie line의 계산치를 예측하였다.
또한 각 농도의 염 수용액에 따른 4성분계의 분배곡선을 결정하여 3성분계에 대한 염효과를 고찰하였다.

Binodal curves for monochlorobenzene（1）-NaCl salt solution(2)-acetone(3) were measured to predict salts effect on ternary monochlorobenzene(1)-water(2)-acetone(3) without NaCl salt at 25 ℃.
Tie lines were determined from these binodal curves, and consistency for these data was tested by correlating with Eisen-Joffe equation.
NaCl salt solutions were prepared for 5 %, 10 %, 15 %, 20 %, 25 %, weight percent respectively, toward saturation concentration.
It was assumed that quaternary liquid-liquid equilibria with salt were converted to ternary liquid-liquid equilibria without salt if salt were excluded.
The binodal curves with NaCl salt were compared with binodal curve without NaCl salt.
Experimental tie lines were correlated with UNIQUAC and modified UNIQUAC model, and parameters in each model and the calculated values of tie lines were predicted.
Quaternary distribution curves were determined for each salt concentration and salts effect on ternary system were examined.