The flash point of diesel fuel varies between 126 and 205 degrees Fahrenheit (between 52 and 96 degrees Celsius) depending on the type of diesel fuel. Diesel is suitable for use in a compression-ignition engine and is most commonly found in large trucks.
The flash point temperature of diesel fuel is the minimum temperature at which the fuel will ignite (flash) on application of an ignition source under specified conditions. Flash point varies inversely with the fuel’s volatility. Flash point minimum temperatures are required for proper safety and handling of diesel fuel. Due to its higher flash point temperature, diesel fuel is inherently safer than many other fuels, such as gasoline.