Flash point temperature is one of the most-widely used physical properties for the evaluation of the flammability hazard of combustible liquids. In this communication, an empirical method involving normal boiling-point temperature and number of carbon atoms of the pure compounds is presented for accurate representation of the flash-point temperature of pure substances. A total of 1471 pure compounds belonging to 77 chemical families were used to develop a general correlation. The global absolute average deviation of the model results from experimental values is 2.4%. A successful comparison is finally made with respect to some of the methods proposed in the literature, which apply a similar approach for calculation of the flash-point temperature of pure compounds.