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Reference
Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
29 June - 05 July 2017
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)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Key result
Remarks on result:
no self ignition observed under the test conditions
Remarks:
up to 400°C

At the start of the test, the test item was a white powder.

At the end of the test, the cube was full of white powder. Therefore it is expected that the test item remained stable.

No relative self-ignition temperature of the test item was observed up to 400°C (corrected value). The heating curve of the test item followed the heating curve of the oven.

This result was observed in Assay No. 1 and Assay No. 3. Assay No. 2 was not taken into account since the oven was stopped for about  30 minutes due to a power failure.

Conclusions:
The relative self-ignition temperature of the test item was investigated according to the EU A.16 method in compliance with GLP. No relative self-ignition temperature was observed up to 400°C (corrected value).

Description of key information

The self-ignition temperature of tungsten zirconium hydroxide oxide was investigated in a guideline study (Klimisch 1, Demangel, 2017) according to the EU A.16 method in compliance with GLP. No self-ignition temperature was observed up to 400°C (corrected value). The heating curve of the test item sample followed the heating curve of the oven.

Key value for chemical safety assessment

Additional information