Laboratory-scale experiments were carried out to evaluate the influences of operational parameters on the melt crystallization efficiency for p-cresol purification. The optimal crystallization conditions were determined: dynamic pulsed aeration at 90 L.h(-1) and the cooling rate of 0.6-0.8 degrees C.min(-1), followed by sweating at 0.2-0.3 degrees C.min(-1) for 40 min. Results also demonstrate that the melt crystallization efficiency is sensitive to feed concentration, which highlights this technology for separation and purification of high purity products.