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Auto flammability

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Reference
Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
May 2018 - Jun 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.16 (Relative Self-Ignition Temperature for Solids)
Version / remarks:
of 30 May 2008 published on 31 May 2008
Deviations:
yes
Remarks:
please refer to "Principles of method if other than guideline"
Principles of method if other than guideline:
The following deviation from the guideline was documented:
The heating rate slightly deviated from the value stated in the guideline of 0.5 °C/min (0.59 °C/min). This is considered as uncritical as a nominal heating rate of 0.5 °C/min was adjusted at the instrument and only a minimal deviation was observed.
GLP compliance:
yes (incl. certificate)
Relative self-ignition temperature:
369.3 °C

Presentation of Temperatures versus Time

 Time in min Temperature (test item) in °C  Temperature (oven) in °C 
 5  25.9  25.1
 60  41.1  52.1
 120  73.0  86.9
 180  103.6  121.8
 240 121.2   157.6
 300  151.2  193.4
 360  188.5  230.1
 420  222.7  265.8
 480  294.6  302.9
540   330.6  338.3
 592  400.0  369.3

Presentation of result heating rate

 T1 in °C  25.1
 t1 in min  5
T2 in °C   369.3
 t2 in min  592
Heating rate in °C/min   0.5864

An increase in the temperature of the sample in comparison to that of the oven could be detected; also signs of ignition could be observed.

The test itemis considered as auto-flammable with a Relative Self Ignition Temperatureof 369.3 ° underthe test conditions.

Conclusions:
Relative Self Ignition Temperature: 369.3 °C
Executive summary:

The study was conducted according to EU Method A.16 under GLP-conditions. An increase in the temperature of the sample in comparison to that of the oven could be detected; also signs of ignition could be observed.

The test item is considered as auto-flammable with a Relative Self Ignition Temperature of 369.3 °C under the test conditions.

Description of key information

The study was conducted according to EU Method A.16 under GLP-conditions. An increase in the temperature of the sample in comparison to that of the oven could be detected; also signs of ignition could be observed.

The test item is considered as auto-flammable with a Relative Self Ignition Temperature of 369.3 °C under the test conditions.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
369.3 °C

Additional information

No pressure stated in the study report, therefore it is assumed, that room conditions dominates. Therefore 101 325 Pa are applicable for the CSA.