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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]
Flashover occurs when the majority of the exposed surfaces in a space are heated to their autoignition temperature and emit flammable gases (see also flash point). Flashover normally occurs at 500 °C (932 °F) or 590 °C (1,100 °F) for ordinary combustibles and an incident heat flux at floor level of 20 kilowatts per square metre (2.5 hp/sq ft).
A large compost pile can spontaneously combust if improperly managed. Spontaneous combustion or spontaneous ignition is a type of combustion which occurs by self-heating (increase in temperature due to exothermic internal reactions), followed by thermal runaway (self heating which rapidly accelerates to high temperatures) and finally, autoignition. [1]
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Heat-producing elements can be designed to limit their maximum temperature below the autoignition temperature of the material involved. Controls can be fitted to detect dangerous concentrations of hazardous gas, or failure of countermeasures. Upon detection, appropriate action is automatically taken, such as removing power, or providing ...
Auto-ignition means that the material will spontaneously combust (or burn) without an external source of ignition such as a spark or flame. If you heat the paper to 450°F and it does not ignite, then 450°F is not the auto-ignition temperature.
The package containing the peroxide is placed in oven set for test temperature; The timer starts when product reaches 2 °C below intended test temperature; The oven is held at constant temperature for up to one week or, until a runaway event occurs. Test "Passes" if product does not exceed test (oven) temperature by 6 °C within one week
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