Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

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.