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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

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relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
weight of evidence
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
other: OECD 102
Version / remarks:
Principles of method if other than guideline:

In a measurement with differential scanning calorimetry a sample of the test item and a reference material (identical crucible without the test item) are subjected to the same controlled temperature program. The difference in the temperatures of the test item and the reference material is recorded and applying a calibration function converted to a heat flow signal. When the sample undergoes a transition involving a change in enthalpy (endothermic on melting or boiling), that change is indicated by a departure from the base line of the heat flow record.


Simultaneous Thermal Analyzer STA 449 (Netzsch)

Analytical balance (accuracy 0.01 mg)


Crucible: Pt-Rh crucible (85 μl), pierced lid

Purge gas: nitrogen, 50 ml/min

Heating rate: 10 K / min

Temperature range: 25 to 1000°C

Sample amount: 10.71 mg
GLP compliance:
Key result
Relative self-ignition temperature:
> 650 °C
Remarks on result:
no self-ignition observed up to the melting point
Executive summary:

No self ignition observed up to the decomposition and/or sublimation temperature of the test item , starting at approx. 650°C

Description of key information

There was no indication of self-heating properties in DSC  up to 650 °C.

Key value for chemical safety assessment

Additional information