Which type of aircraft fuel is known for having the highest flash point?

Kerosene is known for having the highest flash point among the fuels listed. The flash point is the minimum temperature at which a liquid can form enough vapor to ignite in the presence of an ignition source. Kerosene typically has a flash point ranging between 100 to 162 degrees Fahrenheit, making it safer to handle and store compared to gasoline and ethanol, which have much lower flash points. Diesel falls between kerosene and gasoline on the flash point scale, with a higher flash point than gasoline but lower than kerosene. The higher flash point of kerosene contributes to its widespread use in aviation, particularly for jet fuels, as it reduces the risk of accidental ignition in various conditions. This characteristic makes kerosene a more stable and safer option for aviation operations, especially in environments where temperature fluctuations can occur.