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Physical & Chemical properties

Auto flammability

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Reference
Endpoint:
auto-ignition temperature (gases)
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Reason / purpose:
reference to same study
Principles of method if other than guideline:
The determination of autoignition temperature at 6 bar have been performed.
GLP compliance:
not specified
Key result
Remarks on result:
other: No autoignition tempererature have been measured at 6 bar up to 500°C

The criterion for autoignition was sudden temperature and pressure increase.

During the screening test up to 500°C a sudden decomposition was not observed. At temperatures of more than 450°C a moderate pressure decrease was found. Maybe, this is caused by a slow decomposition or cracking reaction.

Additionnal test were performed at a maximum temperature of 500°C, no autoignition reaction was observed. So the autoignition at 6 bar is above 500°C.

Conclusions:
The autoignition temperature of the test substance is higher than 500°C at 6 bar.
Executive summary:

The autoignition of the test substance was performed according to a method which meets generally accepted scientific principles and was well documented.

The test substance was put into a heated flask (100°C), then the temperature of the flask is increased. Pressure and temperature of the flask were measured. A sudden increase of these two parameters is the criterion for autoignition of the test substance.

The autoignition temperature of the test substance is higher than 500°C at 6 bar.

Description of key information

The autoignition of the test substance was performed according to a method which meets generally accepted scientific principles and was well documented.

The autoignition temperature of the test substance is higher than 500°C at 6 bar.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
500 °C

Additional information