Physical stability was assessed through rheological determinations performed in a model DV Brookfield rotational rheometer (Stoughton, MA,USA) with a cone-plate configuration, connected to a Brookifield software program, RHEOCALC Version V 1.01. Rheological parameters were determined, 24 h after preparation and after different storage time. Rheogram curves constructed with ascendant and descendant segments were obtained with rotation speeds increasing progressiveiy (1-4 rpm) and gradually decreasing (4-1 rpm). With the results obtained, values for consistency index (related to the system viscosity) and flow index (related to the system pseudoplasticity) were mathematically by the Ostwald law