autoignition temperature


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Related to autoignition temperature: flash point

autoignition temperature

The minimum temperature needed for self-sustained combustion in absence of a spark or flame, at which the vapours from a volatile liquid will ignite spontaneously.

The autoignition temperature (AT) is of interest to the Occupational Safety and Health Administration (OSHA) (US), which lists ATs in its Materials Safety Data Sheets, see there.
References in periodicals archive ?
Processing fluid is often above its autoignition temperature so leaks caused by sulfidation corrosion frequently result in large fires.
Hydrogen has an autoignition temperature of 858K requiring an ignition source to combust in an IC engine (Lambe, Watson 1993).
Negative Joule Thompson coefficients will cause the fuel gas temperature to rise during isenthalpic expansion (for example through a leak), which may result in an explosion if autoignition temperatures are reached.
ASTM standard tests exist to measure the minimum explosible concentration, the minimum ignition energy (high voltage spark), minimum autoignition temperatures, maximum pressure generated and the maximum rate of pressure rise (which is a measure of the destructive force).