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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Diss Factsheets

Physical & Chemical properties

Auto flammability

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
Guideline study (EU method A.16).
Qualifier:
according to guideline
Guideline:
EU Method A.16 (Relative Self-Ignition Temperature for Solids)
Deviations:
no
GLP compliance:
no
Remarks on result:
other: The test substance WO2 (tungsten dioxide) revealed no self-ignition at temperatures up to 400 ºC.

The temperature of the oven and sample were continuously recorded while the temperature of the oven was increased to 400 ºC at a rate of 0.5 ºC/min. No self-ignition occored, since the sample thermocouple showed no very sharp temperature rise above the oven temperature.

Conclusions:
The test substance WO2 (tungsten dioxide) revealed no self-ignition at temperatures up to 400 ºC.
Executive summary:

A test according to guideline EU A.16 was conducted to determine the self-ignition temperature of tungsten dioxide (WO2; > 99.8 % purity). The test substance WO2 revealed no self-ignition at temperatures up to 400 ºC.

Description of key information

In a test conducted according to EU method A.16 the test substance WO2 revealed no self-ignition at temperatures up to 400 ºC. WO2 cannot be considered auto flammable.

Key value for chemical safety assessment

Additional information

Tungsten dioxide (WO2) is reported to be not auto-flammable in the safety data sheet.