title: Experimental evaluation of three single-particle dissolution models.
abstract: The dissolution of the 60-85-mesh fraction os recording, flow-through dissolution apparatus equipped with a dissolution cell; it was particularly suitable for kinetic analysis of multiparticulate systems. By using a time-scaling approach, experimental data are compared with theoretical calculations to evaluate, quantitatively, which of three single-particle dissolution models best describes the data and how well the multiparticulate kinetics can be explained mathematically. The nonspherical tolbutamide particles are replaced in the calculations by a hypothetical system of spherical particles that appears to be log-normally distributed. This procedure permits the calculation of the intrinsic dissolution profile, considering both size distribution and particle shape effects.
mesh_terms: D007700:Kinetics; D008962:Models, Theoretical; D010316:Particle Size; D012995:Solubility; D013696:Temperature; D014044:Tolbutamide
chemical_list: D014044:Tolbutamide