tungsten zirconium oxide

Auto flammability

Link to relevant study record(s)

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

Guideline:

EU Method A.16 (Relative Self-Ignition Temperature for Solids)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

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.