Single-single liquid-liquid extraction, section1, ternary phase diagram was plotted. And section2, tie lines which plotted from mass fraction of acetic acid can dissolve both chloroform layer and water layer. Thus getting 3 tie lines by each line has different level. Since using the same amount of chloroform but different amount of acetic acid was used. Then, line3 is above line2 and line1 respectively since the amount of acetic acid was higher used. Each tie line can indicate to composition of chloroform water and acetic acid in phase mixture.