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Auto-ignition Temperature

By Little Pro on 2016-01-13 Views:  Update:2018-02-09

Auto-ignition temperature is the lowest temperature at which a chemical will spontaneously ignite in a normal atmosphere without an external source of ignition, such as a flame or spark. You can often find it in the section 9 of safety data sheets.

Regulatory Implications of Auto-ignition Temperature

Knowing the auto-ignition temperature of a chemical is very important for its storage & transport. If a chemical has a low auto-ignition temperature, it shall be handled very carefully to avoid fire.

Auto-ignition test can be conducted for gases, solids and liquids. Under REACH, this study does not need to be conducted:

  • if the substance is explosive or ignites spontaneously with air at room temperature, or
  • for liquids non flammable in air, e.g. no flash point up to 200 °C, or
  • for gases having no flammable range, or
  • for solids, if the substance has a melting point <=200 °C, or if preliminary results exclude self-heating of the substance up to 400 °C.

Other Physicochemical Properties


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