PÉRDIDAS POR EVAPORACIÓN DE ACETATO DE ETILO Y CLORURO DE METILENO CONTROLADOS POR EL CONSEP

Abstract

The Ecuadorian Agency of Drug Control has as control substances the Ethyl Acetate and Methylene Chloride. The weight losses by evaporation of these substances were studied at the laboratory of the Chemical Engineering Faculty (2.870 m.s.n.m.). The research considered two conditions: 1) The weight of the two substances at 22, 24 and 26°C was measured in a static system; and 2) In a dynamic system the weight of the substances under an agitation speed of 100, 500 and 900 RPM, at the same temperatures mentioned was measured it. In both cases, two vessels with different areas were used to evidence the evaporation. The weight loss of Ethyl Acetate and Methylene Chloride were registered every sixty minutes for eight hours. With this data, a mathematical model that associates the weight losses with temperature, evaporation area, Reynolds number and the time was established. The results of this research show that the Methylene Chloride presents more weight loss than Ethyl Acetate.