Fire point

(chemistry) The lowest temperature at which a volatile combustible substance vaporizes rapidly enough to form above its surface an air-vapor mixture which burns continuously when ignited by a small flame.

The temperature at which a frying oil will sustain combustion. It ranges between 340 and 360 °C for different fats. See also flash point; smoke point.

1. See flash point.
2. The temperature at which a fuel’s vapors will sustain ignition.

The fire point of a fuel is the temperature at which it will continue to burn after ignition for at least 5 seconds. At the flash point, a lower temperature, a substance will ignite, but vapor might not be produced at a rate to sustain the fire. Fire point and autogenous ignition are additional considerations when selecting fire resistant greases. Industrially, fire point is the lowest temperature at which industrial greases produce sufficient vapors to form a mixture in air that continuously supports combustion after ignition.^[1]

See also

• Kindling point

Notes

1. ^ "Flash point and fire point of oil". EngineersEdge.com. http://www.engineersedge.com/lubrication/flash_point_fire_point.htm. Retrieved 2009-07-09. 

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