The
solubilities of 4-bromo-1,8-naphthalic anhydride in organic
solvents of acetone, methanol, ethanol, and acetic acid and in the
binary mixtures of acetone and ethanol were determined over the temperature
range of (278.15 to 333.15) K by using the analytical stirred-flask
method. The solubilities
of 4-bromo-1,8-naphthalic anhydride in these solvents increased with
the increasing temperature. The experimental results showed that 4-bromo-1,8-naphthalic
anhydride presents a higher solubility in acetone and the solubility
in acetone had the strongest positive temperature dependency. The
modified Apelblat equation, the combined nearly ideal binary solvent/Redlich–Kister
(CNIBS/R–K) equation,
and the modified Jouyban–Acree model were proposed for correlating
the experimental data. The values for the apparent molar enthalpy
and entropy were calculated by using the van’t Hoff equation.
The experiment results and correlation models could be useful in the
reaction and purification process of 4-bromo-1,8-naphthalic anhydride.
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