AdvertisementThe tests showed that ethanol blending caused a significant reduction in diesel’s flash point. In simple terms, a lower flash point means the fuel can produce ignitable vapour at a lower temperature. This makes flash point an important measure when assessing how safely a fuel can be stored, transported and handled. AdvertisementIt is important to note that flash point does not mean a fuel will automatically catch fire at that temperature. If blending ethanol reduces the flash point below the prescribed standard, it can create additional safety concerns during storage, transportation and handling.