Learn the differences between Auto Ignition and Flash Points
Auto Ignition :
Flammable gases also have a temperature where ignition
will take place, even without an external ignition source
such as a spark or flame. This temperature is called the
Ignition Temperature.
Flash Point (F.P. °C)
The flash point of a flammable liquid is the lowest temperature at which the surface of the liquid emits sufficient vapor to be ignited by a small flame.