Accurate knowledge for hydrate formation conditions of pure propane in the presence of liquid water is important to avoid flow assurance issues in processing, storage and transportation of liquefied petroleum gas, as well as modeling hydrate based separation processes involving type II hydrates. Experimental dissociation conditions were measured using the phase boundary dissociation method, which has the advantages of reduced experimental time and generation of more equilibrium dissociation data when compared to other hydrate measurement techniques. In this study, phase equilibra measurements are reported for 99.5 mol % and 99.999 mol % propane at the phase boundary for the liquid water (Lw)-hydrate (H)-propane vapour (C3H8 (g)) and Lw -H-liquid propane (C3H8 (l)) loci. The results were modeled using van der Waal and Platteeuw model for the hydrate phase and reduced Helmholtz energy equation for the fluid phases. Results are compared with highly variant literature data, where large deviations observed for the Lw-H-C3H8 (l) phase boundary can be mainly attributed to purity and experimental techniques used in the literature.