The multicomponent solid-liquid equilibrium data for 1,3,5-triformylbenzene, a key intermediate for the synthesis of porous organic cages, in 12 neat solvents (water, methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, sec-butanol, n-pentanol, acetone, acetonitrile, and 1,4-dioxane) and the binary solvent mixture of acetone + water were measured by the static gravimetric method within the temperature range from 283.15 to 323.15 K. In both neat and binary solvent systems, the solubility values increased with the increase in temperature. Analysis of the data showed that the solubility behavior was mainly affected by the properties of solute and solvents. Six thermodynamic models, i.e., the modified Apelblat model, Yaws model, simplified Jouyban-Acree model, Machatha model, Apelblat-Jouyban-Acree model, and Apelblat-Machatha model, were used for correlating the obtained solubility data mathematically. The Yaws model could give a better fitting result for the solubility in pure solvents (the maximum ARD is 10.761 x 10(-2)), and the correlation result of Machatha model is the best for the binary solvent system (the largest ARD is 5.699 x 10(-2)). To evaluate the models for correlating the solubility data, the Akaike information criterion values and Akaike weights were calculated for each thermodynamic model.