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Reference
Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
03/01/2001 - 04/01/2001
Reliability:
2 (reliable with restrictions)
Qualifier:
according to guideline
Guideline:
other: VDI richtlinie 2263, Blatt 1
GLP compliance:
not specified
Specific details on test material used for the study:
ruthenium-oxihydrat, moisture content ca 10.2%
Key result
Relative self-ignition temperature:
> 420 °C
Remarks on result:
no self ignition observed under the test conditions

endothermal phase due to water evaporation until approx 110°C

afterwards, exothermal peak associated with temperature increase of approx 60K, followed by linear temperature increase behaviour till final temperature of 419.68°C

No self-ignition behaviour of test item.

Conclusions:
In a preliminary test up to 420°C, ruthenium (IV) oxide did not show self-ignition behaviour.
Executive summary:

A preliminary test was performed to determine self ignition behaviour of ruthenium (IV) oxide according to VDI guideline 2263. The peak of approximately 60°C observed at approx 110°C was attributed to evaporation of water. No self-ignition was observed in the temperature range 25 - 420 °C.

Description of key information

A preliminary test was performed to determine self ignition behaviour of ruthenium (IV) oxide according to VDI guideline 2263. No self-ignition was observed in the temperature range 25 - 420 °C.

In accordance with column 2 of REACH Annex VII, the self-ignition temperature study does not need to be conducted as the substance is a solid and preliminary results exclude self heating of the substance up to 400°C.

Key value for chemical safety assessment

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