As an urgent need in the design and upscale of the industrial crystallization process, on the basis of the isothermal saturated method, the solubility of dimethyl 1,4-cyclohexanedione-2,5-dicarboxylate in N,N-dimethylformamide, methanol, I-propanol, acetonitrile, 2-propanol, ethyl acetate, and acetone was measured at atmospheric pressure. The experimental data were well-correlated with the lambda h model. The calculated solubilities show good agreement with the experimental solubility data. To our knowledge, this is the first time the solubilities of dimethyl 1,4-cyclohexanedione-2,5-dicarboxylate are reported.