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Auto flammability

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Endpoint:
relative self-ignition temperature (solids)
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
the study does not need to be conducted because the substance is a solid having a melting point <= 160°C
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
Qualifier:
according to guideline
Guideline:
other: UN Recommendations on the Transport of Danegerous Goods, Manual of Tests and Criteria, Fifth Revised Edition (2009)
Qualifier:
according to guideline
Guideline:
other: Regulation (EC) No 1272/2008
GLP compliance:
no
Key result
Remarks on result:
not measured/tested
Remarks:
The test item has low melting point (< 160 °C) and should not be classified as self-heating because the melting process is endothermic and the substance-air surface is reduced.

The test item has low melting point (< 160 °C) and should not be classified as self-heating because the melting process is endothermic and the substance-air surface is reduced.

Table 1. Differential Scanning Calorimetry - results

Test item

Trial no.

Sample mass (g)

Endothermic peak (melting peak) (oC)

Tetraaminepalladium (II) acetate

1

7.00

102

2

5.30

103

Conclusions:
Tetraamminepalladium (II) acetate does not fulfil the criteria of Class 4.2 "Self-heating Substances" of the UN-TDG and the Hazard Class "Self-heating substances and mixtures" of the Regulation (EC) No. 1272/2008 (CLP-/GHS-Regulation).
Executive summary:

Tetraamminepalladium (II) acetate was assessed for auto-flammability following the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria fifth Edition (2009) and Regulation (EC) No 1272/2008 (CLP-/GHS-regulation). Differential Scanning Calorimetry was also performed to characterise the test item.

During the DSC analysis Tetraamminepalladium (II) acetate showed endothermic peaks, for example melting peaks. The test item has low melting point (<160 °C) and therefore does not fulfil the criteria of Class 4.2 "Self-heating Substances" of the UN-TDG and the Hazard Class "Self-heating substances and mixtures" of the Regulation (EC) No. 1272/2008 (CLP-/GHS-Regulation) as the melting process is endothermic and the substance-air surface is reduced. The full N.4 test was therefore not conducted.

Description of key information

Tetraamminepalladium (II) acetate does not fulfil the criteria of Class 4.2 "Self-heating Substances" of the UN-TDG and the Hazard Class "Self-heating substances and mixtures" of the Regulation (EC) No. 1272/2008 (CLP-/GHS-Regulation).

Key value for chemical safety assessment

Additional information

Tetraamminepalladium (II) acetate was assessed for auto-flammability following the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria fifth Edition (2009) and Regulation (EC) No 1272/2008 (CLP-/GHS-regulation) (Michael-Schulz 2016).

Differential Scanning Calorimetry was performed to characterise the test item. During the DSC analysis Tetraamminepalladium (II) acetate showed endothermic peaks, for example melting peaks. The test item has low melting point (<160°C) and therefore does not fulfil the criteria of Class 4.2 "Self-heating Substances" of the UN-TDG and the Hazard Class "Self-heating substances and mixtures" of the Regulation (EC) No. 1272/2008 (CLP-/GHS-Regulation) as the melting process is endothermic and the substance-air surface is reduced. The full N.4 test was therefore not conducted.