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It is the lowest temperature at which a flammable liquid can receive an ignition source and be ignitable. However, once the ignition source is removed, the flammable nature may cease and the flame stop. At temperatures slightly higher, it is when an ignition source is introduced and the ignition source is removed that the flammable liquid continues to burn regardless of the ignition source.

The lowest temperature at which a flammable liquid (e.g. gasoline) becomes capable of catching fire in the air.

The correct term applied to non-liquids is the autoignition temperature or kindling point.

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14y ago

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