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Auto flammability

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auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Apr 2018
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to guideline
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
GLP compliance:
Specific details on test material used for the study:
Product Name: n-Hexyl Acrylate (HexA)
Batch Number: KAL1908
Appearance: Colourless liquid
Purity (GC): 98.52%
Storage Conditions: Ambient temperature in darkness
Key result
Auto-ignition temperature:
251 °C
Atm. press.:
101.3 kPa

As determined by this method, the AIT is the lowest temperature at which the substance will produce hot flame ignition in air at atmospheric pressure without the aid of an external ignition source such as spark or flame. It is the lowest temperature to which a combustible mixture must be raised so that the rate of heat evolved by the exothermic oxidation reaction will exceed the rate at which heat is lost to the surroundings and cause ignition. Autoignition, by its very nature, is dependent on the chemical and physical properties of the material and the method and apparatus employed for its determination. The

autoignition temperature by a given method does not necessarily represent the minimum temperature at which a given material will self ignite. The volume of the vessel used is particularly important since lower autoignition temperatures will be achieved in larger vessels.

The test item N-hexyl acrylate has an auto-ignition temperature of 251 °C.
Executive summary:

The test item N-hexyl acrylate has an auto-ignition temperature of 251 °C at 101.3 kPa. according to the Regulation EC No. 440/2008 Method A.15: Auto-Ignition Temperature (Liquids and Gases) and DIN 51794 (2003): Determination of Ignition Temperature.

Description of key information

The relative self-ignition temperature of the test item was tested in a GLP-compliant study following Regulation EC No. 440/2008 Method A.1, DIN 51794 (2003) and DIN EN 14522 (2005).

Self ignition occurred at 251 °C

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
251 °C

Additional information