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Physical & Chemical properties

Auto flammability

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Type of information:
experimental study
Adequacy of study:
key study
Study period:
16 - 19 Oct 2012
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP - guideline study
according to
other: UN-Test N.4 (Bowes-Cameron-Cage Test)
GLP compliance:
yes (incl. certificate)
Hessisches Ministerium für Umwelt, Energie, Landwirtschaft und Verbraucherschutz, Wiesbaden, Germany
Auto-ignition temperature:
> 140 °C
Atm. press.:
ca. 1 013 hPa
Remarks on result:
Relative self-ignition temperature:
> 140 °C
Remarks on result:
at atm. press. of ca.1013.0 hPa

No exothermic effect has been observed at an oven temperature of 140 °C for 72 h. The sample needed more than 42 h to reach the oven temperature due endothermic effects. After the measurement the mesh wire basket contained approximately 10 vol.% and 25 wt.%, respectively, less sample than at the start. After the test the test item was discoloured to light beige (original colour: white).

The temperature of the test item did not exceed 200 °C during the whole test.

Due to the negative result at 140 °C no further tests are necessary.

The test item is not classified in Division 4.2 (self-heating substances) due to the fact that a negative result was obtained by the test. using a 10 cm sample cube at 140 °C.

Description of key information

not self-heating (UN RTDG N4)

Key value for chemical safety assessment

Additional information

The relative self-ignition temperature / auto-ignition temperature is determined using UN RTDG N.4. The test item does not need to be classified, as no self-heating was observed in a 100 mm sample cube at 140 °C.