Present study aims at investigation of crystallization kinetics of bisphenol A (BPA) adducts under the influence of impurities present in the industrial liquor. Experiments were carried out in a seeded batch cooling crystallizer. A population balance equation coupled with a mass balance equation was used to model the adductive crystallization processes. These model equations were solved simultaneously utilizing the finite difference method of Crank Nicolson. Kinetic parameters of the rate equations of growth, nucleation and agglomeration were estimated by minimizing the difference between the model predictions of product size distributions and experimental data.