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Auto flammability

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Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From 01 October 2015 to 11 July 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose:
other: information from the boiling point study is needed for the interpretation of the auto ignition study
Related information:
Composition 1
Reference:
Composition 0
Qualifier:
according to
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Version / remarks:
May 2008
Deviations:
no
Qualifier:
according to
Guideline:
DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
Version / remarks:
May 2003
Deviations:
no
Qualifier:
according to
Guideline:
IEC 60079-4 (Electrical apparatus for explosive gas atmospheres. Part 4: Method of test for ignition temperature)
Version / remarks:
1975
Deviations:
no
GLP compliance:
yes (incl. certificate)
Test material information:
Composition 1
Specific details on test material used for the study:
In order to obtain a homogeneous sample, the test item is liquefied in a water bath before to be used.
The water bath was at a temperature of 48°C.
Auto-ignition temperature:
> 279 - < 294 °C
Atm. press.:
> 1 016.4 - < 1 021.9 hPa
Auto-ignition temperature:
> 280 - < 287 °C
Atm. press.:
> 1 016.4 - < 1 021.9 hPa
Auto-ignition temperature:
> 282 - < 289 °C
Atm. press.:
> 1 016.4 - < 1 021.9 hPa

Preliminary test result:

The estimated auto-ignition temperature was 295°C

Main test results:

Ignition of the test item was observed with each sample volume used. In each test a minimum auto-ignition temperature was obtained. The maximum deviation between the three mean values obtained is lower than 10°C. According to the guidelines, no further testing was required.

The lowest temperature at which ignition occurred was rounded down to the nearest multiple of 5°C. This temperature is determined to be the test item auto-ignition temperature. This temperature is 275°C.

Conclusions:
The auto ignition temperature of the mixture of decomposition products and test item is 275°C at 1016.4-1021.9 hPa
Executive summary:

The auto-ignition temperature of the test item was determined according to recognised guidelines and under GLP.

No deviation from these guidelines was observed during the study.

The auto ignition temperature of the mixture of decomposition product and test item is 275°C at 1016.4-1021.9 hPa

Description of key information

The auto flammability temperature of the test item was determined in an experimental key study (Klimisch validity one, according to recognised guidelines).

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
275 °C

Additional information

The auto ignition observed is due to a mix of decomposition products and test item. Indeed, the test item start to decompose at temperature higher than 275°C.