One factor that makes the characterization of liquid flammability challenging is the inherent nature of mixtures, attributed to the complexity of intermolecular interactions among the involved components. Moreover, mixtures containing fractions or derivatives of petroleum are more challenging, as the characterization of the oil composition is not exact . Biodiesel faces a similar issue, despite being less chemically complex than petroleum, it may have contaminants, such as glycerol, triacylglycerols, fatty acids, water, and ethanol or methanol, which aren't reported most of the time .