화학공학소재연구정보센터
Journal of Chemical and Engineering Data, Vol.59, No.2, 163-167, 2014
Solid-Liquid Equilibrium and Phase Diagram for the Ternary 4-Chlorophthalic Anhydride + 3-Chlorophthalic Anhydride plus Ethyl Acetate System
In this paper, the mutual solubility for ternary system of 4-chlorophthalic anhydride + 3-chlorophthalic anhydride + ethyl acetate was measured experimentally at different temperatures. Four isothermal phase diagrams of the system were constructed based on the measured solubility. At each temperature, there existed two pure solid phases, pure 4-chlorophthalic anhydride and pure 3-chlorophthalic anhydride, which were identified by the Schreinemakers' wet residue method. When temperature decreases, the crystallization regions of 4-chlorophthalic anhydride and 3-chlorophthalic anhydride increase. At a certain temperature, the crystallization region of 4-chlorophthalic anhydride is smaller than that of 3-chlorophthalic anhydride.