The solubilities of 2-(4-ethylbenzoyl)benzoic acid in N,N-dimethylformamide, N-methyl-2-pyrrolidone, methanol, ethanol, 1-propanol, 2-propanol, tetrahydrofuran, benzene, 1,4-dioxane, acetone, and ethyl formate were measured using a synthetic method at temperatures in the range from (279.55 to 343.15) K under atmospheric pressure. The laser-monitoring observation technique was used to determine the dissolution of the solid phase in a solid + liquid mixture. The solubility of 2-(4-ethylbenzoyl)benzoic acid in different solvents increased as the temperature increased. Measured solubility values were well correlated as a function of temperature by the modified Apelblat equation.