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  2. Spontaneous combustion - Wikipedia

    en.wikipedia.org/wiki/Spontaneous_combustion

    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]

  3. List of UN numbers 3501 to 3600 - Wikipedia

    en.wikipedia.org/wiki/List_of_UN_numbers_3501_to...

    Articles containing a substance liable to spontaneous combustion, not otherwise specified UN 3543: 4.3: Articles containing a substance which emits flammable gas in contact with water, not otherwise specified UN 3544: 5.1: Articles containing oxidizing substance, not otherwise specified UN 3545: 5.2

  4. GHS hazard pictograms - Wikipedia

    en.wikipedia.org/wiki/GHS_hazard_pictograms

    Flammable solids, self-reactive substances and solid desensitized explosives – Solids which, under conditions encountered in transport, are readily combustible or may cause or contribute to fire through friction; self-reactive substances which are liable to undergo a strongly exothermic reaction; solid desensitized explosives which may ...

  5. Combustibility and flammability - Wikipedia

    en.wikipedia.org/wiki/Combustibility_and...

    Combustibility is a measure of how easily a substance bursts into flame, through fire or combustion. This is an important property to consider when a substance is used for construction or is being stored. It is also important in processes that produce combustible substances as a by-product. Special precautions are usually required for ...

  6. Australian Dangerous Goods Code - Wikipedia

    en.wikipedia.org/wiki/Australian_Dangerous_Goods...

    Class 1 Explosive substances and articles; Class 2 Gases; Class 3 Flammable liquids; Class 4.1 Flammable solids, self-reactive substances and solid desensitized explosives; Class 4.2 Substances liable to spontaneous combustion; Class 4.3 Substances which, in contact with water, emit flammable and/or toxic gases; Class 5.1 Oxidizing substances

  7. Pyrophoricity - Wikipedia

    en.wikipedia.org/wiki/Pyrophoricity

    The creation of sparks from metals is based on the pyrophoricity of small metal particles, and pyrophoric alloys are made for this purpose. [2] Practical applications include the sparking mechanisms in lighters and various toys, using ferrocerium; starting fires without matches, using a firesteel; the flintlock mechanism in firearms; and spark testing ferrous metals.

  8. Autoignition temperature - Wikipedia

    en.wikipedia.org/wiki/Autoignition_temperature

    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]

  9. Smoke - Wikipedia

    en.wikipedia.org/wiki/Smoke

    The composition of smoke depends on the nature of the burning fuel and the conditions of combustion. Fires with high availability of oxygen burn at a high temperature and with a small amount of smoke produced; the particles are mostly composed of ash, or with large temperature differences, of condensed aerosol of water.