In order to ascertain the characteristic features of CME as a biofuel, the physicochemical properties of CME was analyzed against BIS specifications for biodiesel. The main criterion of biofuel quality is the inclusion of its physical and chemical properties into the requirements of the adequate standard. Though the current standards for regulating the quality of biofuels vary from region to region, their similarity with the existing diesel fuel standards common in the regions will be crucial in determining the fuel quality.Table 4 illustrates the test values of CME showing the physicochemical properties against biodiesel standards. The test values strongly support the functional similarity of CME with that of diesel as per the requirement of fuel quality. Cetane number (CN) of CME is observed as 42.1. As the primary indicator of ignition quality of fuels, the optimal range of the CN was identified in between 41 and 56 based on the global biodiesel standards [19]. The cetane number of a biofuel depends on the chemical structure of the veg- etable oil, the degree of unsaturation, number of carbon atoms and