Flash point and ignition point are both properties of liquid or gaseous fuels, and their differences are:
The flash point is the lowest temperature at which a liquid or gas mixture can produce flammable gases by spraying fire at a certain temperature. When the temperature of the mixture reaches or exceeds the flash point, combustion will occur on the surface of the liquid, but it will not continue to burn, only momentarily. After combustion, no flame will be generated on the surface of the liquid. The flash point usually refers to the flash point of a liquid.
The ignition point is the lowest temperature at which a liquid or gas can self sustain combustion after being ignited at a certain temperature. When the temperature of the liquid reaches the ignition point, the liquid surface will burn and continue to burn until the liquid disappears or oxygen is insufficient. The ignition point usually refers to the ignition point of a gas.
Therefore, the flash point refers to whether a liquid or gas mixture can produce combustion, and the ignition point refers to the ability of the liquid or gas fuel to self sustain combustion. In practice, the values of flash point and ignition point are extremely important safety indicators, which are of great significance for production, transportation, storage, and other fields.
