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The autoignition temperature or self-ignition temperature, often called spontaneous ignition temperature or minimum ignition temperature (or shortly ignition temperature) and formerly also known as kindling point, of a substance is the lowest temperature at which it spontaneously ignites in a normal atmosphere without an external source of ignition, such as a flame or spark. [1]
Otherwise the data is temperature of liquid/vapor equilibrium. log 10 of formic acid vapor pressure. ... Autoignition temperature: 520 °C Explosive limits:
Autoignition temperature: 635 °C; Water solubility: Slightly; Specific gravity: 1.16 ... Except where noted otherwise, data relate to Standard temperature and pressure.
Acetone's auto-ignition temperature is the relatively high 465 °C (869 °F); [19] moreover, auto-ignition temperature depends upon experimental conditions, such as exposure time, and has been quoted as high as 535 °C. [80]
The (s) notation indicates equilibrium temperature of vapor over solid. Otherwise temperature is equilibrium of vapor over liquid. ... Autoignition temperature: 651 ...
Autoignition temperature Lower Upper Acetaldehyde: 4.0 57.0 IA −39 °C 0.37 175 °C Acetic acid (glacial) 4 19.9 II 39–43 °C 463 °C Acetic anhydride: II 54 °C Acetone: 2.6–3 12.8–13 IB −17 °C 1.15 @ 4.5% 465 °C, 485 °C [5] Acetonitrile: IB 2 °C 524 °C Acetyl chloride: 7.3 19 IB 5 °C 390 °C Acetylene: 2.5 100 [6] IA Flammable gas
The flash point of a material is the "lowest liquid temperature at which, under certain standardized conditions, a liquid gives off vapours in a quantity such as to be capable of forming an ignitable vapour/air mixture". [1] The flash point is sometimes confused with the autoignition temperature, the temperature that causes spontaneous ignition.
Vapour may also be ignited by the static electricity which can build up when ether is being poured from one vessel into another. The autoignition temperature of diethyl ether is 160 °C (320 °F). The diffusion of diethyl ether in air is 9.18 × 10 −6 m 2 /s (298 K, 101.325 kPa). [citation needed]