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Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
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:
OECD Guideline 102 (Melting point / Melting Range)
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
GLP compliance:
yes (incl. QA statement)
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
Batch 3033900250
Key result
Melting / freezing pt.:
> 500 °C
Decomposition:
yes
Decomp. temp.:
222 °C

On completion of the screening test, aluminium crucible has been opened and sample appearance observed as grey powder. Endothermic event was observed with onset temperature of 222.2°C, however no signs of formed droplets found in crucible after thetest. Sample did not melt up to 500°C. Test terminated. Therefore, boiling point is exempt.

Conclusions:
The melting temperature was investigated according to EU Method A.1. and OECD 102. A sample was charged to a Tzero aluminium DSC crucible which was then sealed and placed in the furnace.

On completion of the screening test, aluminium crucible has been opened and sample appearance observed as grey powder. Endothermic event was observed with onset temperature of 222.2°C, however no signs of formed droplets found in crucible after the test. Sample did not melt up to 500°C. Test terminated. Therefore, boiling point is exempt.
Executive summary:

The melting temperature was investigated according to EU Method A.1. and OECD 102. A sample was charged to a Tzero aluminium DSC crucible which was then sealed and placed in the furnace.


On completion of the screening test, aluminium crucible has been opened and sample appearance observed as grey powder. Endothermic event was observed with onset temperature of 222.2°C, however no signs of formed droplets found in crucible after the test. Sample did not melt up to 500°C. Test terminated. Therefore, boiling point is exempt.

Description of key information

On completion of the screening test, aluminium crucible has been opened and sample appearance observed as grey powder. Endothermic event was observed with onset temperature of 222.2°C, however no signs of formed droplets found in crucible after the test. Sample did not melt up to 500°C. Test terminated.

Key value for chemical safety assessment

Additional information