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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:
11-17 November 2015
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
The study was conducted according to an internationally recognised method, and under GLP. No deviation was reported. Test substance is adequately specified with purity. Therefore full validation applies.
according to guideline
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
according to guideline
other: DIN 51794 (2003): Determination of ignition temperature
Principles of method if other than guideline:
Not applicable
GLP compliance:
yes (incl. QA statement)
inspected on January 22 and 23, 2013 / signed on March 22, 2013
Specific details on test material used for the study:
Storage condition of test material: 11-25 °C, dry, keep container closed
Key result
Auto-ignition temperature:
235 °C
Atm. press.:
999.4 - 1 014.2 hPa

Preliminary Test


Table 4.12/1: Results of the preliminary test


Temperature (°C)





Ignition (+/-)





In the preliminary test, an ignition was observed at 291°C(Atmospheric pressure: 1014.2 hPa)


Main test

Table 4.12/2: Lowest temperatures at which an ignition occurred

Main test series

Lowest temperatures of an ignition

Highest temperatures without an ignition

Atmospheric pressure


242 °C

241 °C

1014.2 hPa


238 °C

237 °C

1014.2 hPa


236 °C

234 °C

999.4 hPa

*only the measurements after the lowest temperature of ignition are considered as relevant for evaluation.

Based on results of the main test series, the lowest auto-ignition temperature was 236 °C. Results are within the required range of 10 °C, therefore the validity criterion is fulfilled.

The auto-ignition temperature rounded down to the nearest multiple of 5 °C was determined as 235 °C.

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

The substance was tested for its autoflammable properties, according to Standard DIN 51794 (listed in EU A.15 guideline). Test material was injected into a heated flask, until the lowest temperature at which ignition occurs was determined.

The auto-ignition temperature of the test substance has been determined to be 235 °C at 999.4-1014.2 hPa.

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 fully reliable experimental study, conducted according to a recognized DIN/EU method under GLP, is available. Therefore, it is considered as a key study. 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