Flash Points of a Flammable Liquid Mixture of Binary System

The hazardous index of a flammable liquid is classified according to its flash point. A classification of the flash points is important for the safe handling of flammable liquids such as solvent mixtures. Basic to all flash points behavior are vapor pressure and explosive limits(lower explosive limit and upper explosive limit). The flash points of pure substances and solvent mixtures can be calculated with the appropriate use of the fundamental laws of Raoult, Dalton, Le Chatelier and activity coefficient models. In this study, experimentally determined lower and upper flash points of M.E.K.-toluene system were compared with the calculated values by using Raoult''''s law and van tau equation. The lower flash points were in agreement with the predicted values by Raoult''''s law, and the upper flash points were in agreement with the predicted values by van Laar equation. By means of this methodology, it is possible to evaluate reliability of experimental data of the flash points of the flammable mixtures.