Palladium

Auto flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

relative self-ignition temperature (solids)

Data waiving:

other justification

Justification for data waiving:

other:

Reference 2

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

1 December 2010 to 12 January 2011

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP compliant, guideline study, available as unpublished report, acceptable without restrictions

Qualifier:

equivalent or similar to guideline

Guideline:

other: N4 (Modified Method) Self Heating Substances

Deviations:

yes

Remarks:

the test item was only available in very limited amounts and was extremely expensive. therefore, in order to obtain as much information as possible on the self heating properties of the test item a modified procedure was employed

GLP compliance:

yes (incl. QA statement)

Key result

Remarks on result:

no self ignition observed under the test conditions

Palladium (black) showed no signs of self ignition or self heating when the test item was held at 140 °C for 24 hours. Additionally when the test item was heated from 140 to 400 °C, the sample temperature did not exceed the oven temperature by greater than 60 °C

Conclusions:

Palladium (black) showed no signs of self ignition or self heating when the test item was held at 140 °C for 24 hours. Additionally when the test item was heated from 140 to 400 °C, the sample temperature did not exceed the oven temperature by greater than 60 °C

Executive summary:

This is a GLP compliant, guideline study considered suitable for use as the key study for this endpoint. Palladium (black) showed no signs of self ignition or self heating when the test item was held at 140 °C for 24 hours. Additionally when the test item was heated from 140 to 400 °C, the sample temperature did not exceed the oven temperature by greater than 60 °C

Reference 3

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Not reported

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: GLP unknown, guideline study, available as unpublished report, acceptable with restrictions

Qualifier:

according to guideline

Guideline:

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

Deviations:

not specified

GLP compliance:

not specified

Relative self-ignition temperature:

> 400 °C

Remarks on result:

other: No exothermal reactions (self heating or auto ignition) observed for temperature up to 400°C

No details provided re atomospheric pressure. Test temperature 24 degs C. No exothermal reactions (self heating or auto ignition) observed for temperature up to 400°C. Measurements performed with one powder sample and two reference (graphite) samples.

Conclusions:

Auto-ignition temperature of Palladium is >400 °C

Executive summary:

This is a guideline study and is considered suitable for use as a key study for this endpoint. The auto-ignition temperature of Palladium is >400 °C

Description of key information

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. Two studies are available to support this waiver, for palladium and palladium (black). Both studies excluded self-heating up to 400°C.

Additional information

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. Two studies are available to support this waiver, for palladium and palladium (black). Both studies excluded self-heating up to 400°C.

Verplaetsen (2010) is a guideline study and is considered suitable for use as a key study for this endpoint. The auto-ignition temperature of Palladium is >400 °C

Walker and White (2010) is a GLP compliant, guideline study considered suitable for use as the key study for this endpoint. Palladium (black) showed no signs of self ignition or self heating when the test item was held at 140 °C for 24 hours. Additionally when the test item was heated from 140 to 400 °C, the sample temperature did not exceed the oven temperature by greater than 60 °C.