Flash point
Lowest temperature at which a volatile substance can vaporize to form an ignitable mixture in air
Nº Q194376 ★★★
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Flash point
Lowest temperature at which a volatile substance can vaporize to form an ignitable mixture in air
The flash point of a material is the lowest temperature at which a liquid gives off enough vapor so that it will ignite in the presence of an ignition source. This is different from the fire point, which is the lowest temperature at which the vapors keep burning after the ignition source is removed.
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From Wikipedia
The flash point of a material is the lowest temperature at which a liquid gives off enough vapor so that it will ignite in the presence of an ignition source. This is different from the fire point, which is the lowest temperature at which the vapors keep burning after the ignition source is removed. The fire point is higher than the flash point, because at the flash point the rate at which the vapor is produced is not sufficient to sustain combustion. The flash point is also sometimes confused with the autoignition temperature, the temperature that causes spontaneous ignition. Neither flash point nor fire point depends directly on the ignition source temperature, but ignition source temperature is far higher than either the flash or fire point, and can increase the temperature of fuel above the usual ambient temperature to facilitate ignition.
Text: Wikipédia, CC BY-SA 4.0. · Image: Nik Frey (niksan) (CC BY 2.5) ·
