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Physical & Chemical properties

Auto flammability

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Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2016-05-19 to 2016-05-23
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Version / remarks:
2008
Qualifier:
according to guideline
Guideline:
DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
Version / remarks:
2003
Qualifier:
according to guideline
Guideline:
DIN EN 14522, Method P (Determination of the auto ignition temperature of gases and vapours)
Version / remarks:
2005
GLP compliance:
no
Key result
Auto-ignition temperature:
240 °C
Atm. press.:
10 135.25 hPa

Regulation EC No. 440/2008 and DIN 51794: The auto-ignition temperature rounded down to the nearest multiple of 5 °C was determined as 240 °C.

DIN EN 14522: The auto-ignition temperature reduced by 1.5 % and rounded to the nearest integer temperature was determined as 238 °C.

Conclusions:
The auto-ignition temperature of the test item was determined to be 240°C.
Executive summary:

In the GLP and EU method A.15 guideline compliant study, the auto-ignition temperature of the test item was determined to be 240°C.

Description of key information

The auto-ignition temperature of the test substance was determined to be 240°C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
240 °C

Additional information

A study was conducted according to Regulation (EC) No 440/2008 Part A A.15 to determine the auto-ignition temperature of the test substance. In a preliminary test the approximately auto-ignition temperature were determined. For the main test three test series were conducted. The temperature determined in the preliminary test was used as starting point for the main test. The temperature was decreased by 5 K until no ignition was observed. The test was repeated with slighter temperature steps to determine the auto-ignition temperature more accurate. According to criteria as laid down in DIN 51794 the auto-ignition temperature is the lowest value out of three experiments rounded down to a whole multiple of 5 °C. Therefore the auto-ignition temperature was stated to be 405 °C. All three values lay within a range of 20 K. No observations were made which might cause doubts concerning the validity of the study outcome. Thus, the validation criteria were fulfilled.