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Physical & Chemical properties

Auto flammability

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auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
17 August to 01 September 2010
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
The study was conducted according to an internationally recognised method, and under GLP. No deviation affected the quality of the study. The substance is adequately identified, but the composition is incomplete. Therefore validation applies with restrictions.
according to guideline
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Version / remarks:
Regulation (EC) No 440/2008
according to guideline
DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
GLP compliance:
yes (incl. QA statement)
issued on 12/01/2007
Specific details on test material used for the study:
Storage condition of test material: The test item was stored in a closed vessel at room temperature (20 +/-5°C).
Key result
Auto-ignition temperature:
235 °C
Atm. press.:
99 083 - 99 853 Pa


Auto-ignition was recorded at 257°C.

Atmospheric pressure during the pre-test was 99177 Pa.

Main study

Table 4.12/1: Lowest Values Main Study



Ignition delay

Drops used


242 °C

67 seconds



247 °C

79 seconds



237 °C

50 seconds



238 °C

47 seconds



The highest value was discarded (exp.2), because the largest difference with the measured ignition temperatures of the other experiments was 10K difference.. For the final evaluation, the values from the first, the third and the fourth main study were used.

The lowest value of the auto ignition temperature is 237 °C. This value was determined using nine drops test item. The test item showed auto ignition after 50 seconds.

The auto ignition temperature (result of determination) is the lowest value from the lowest values of the three experiments (first, third and fourth experiment), rounded down to a whole multiple of 5 °C. Therefore, the auto ignition temperature is stated as 235 °C.

Detailed observations are available in the study report.

This parameter/method is not relevant for classification; however the information is useful regarding process safety and potential additional fire hazard.
No particular hazard is anticipated in normal conditions of storage.
Executive summary:

The auto-ignition temperature of the substance was tested under GLP, according to DIN 51794 standard (listed in EU A.15 guideline).

The test substance was injected into a heated flask, until the lowest temperature at which ignition occurs was determined. Four independent determinations were performed.

The auto-ignition temperature (rounded down to a whole multiple of 5 °C) of test item was stated as the mean of the three lower and consistent values: 235°C at 99083 Pa.

Description of key information

No particular hazard is anticipated in normal conditions of storage.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
235 °C

Additional information

A reliable experimental study, conducted according to a recognized DIN/EU method and under GLP, is available. Despite restrictions due to incomplete test item identification it is considered as key study, and the result is retained as key data.

This parameter is not relevant for classification, however the information is useful regarding process safety and potential additional fire hazard.