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Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
05 October 2017 to 13 December 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
1995
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
2016
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
Version / remarks:
1998
Deviations:
no
GLP compliance:
yes
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
> 400 °C
Decomposition:
no

Preliminary Test

- No weight loss was observed during the experiment.

- After the experiment, the sample appeared to have been unchanged, i.e. no signs of decomposition and/or evaporation were observed.

 

Main Study

- No effects were observed which were due to melting and/or boiling of the test material.

- After the experiment, the sample appeared unchanged, i.e. no decomposition and/or evaporation were observed.

 

Conclusion

- Melting of the test material was not observed below 400 °C (> 673 K).

Conclusions:
Under the conditions of this study the melting point of the test material was not below 400 °C.
Executive summary:

The melting point of the test material was investigated in accordance with the standardised guidelines OECD 102, EU Method A.1 and OPPTS 830.7200, under GLP conditions.

A preliminary test was performed using a thermogravimetric analyser (TGA) as a safety precaution for the DSC (differential scanning calorimeter) main test.

No effects were observed which were due to melting of the test material in the preliminary or main test. After the experiment, the sample appeared unchanged, i.e. no decomposition and/or evaporation were observed.

The melting temperature is defined as the temperature at which the phase transition from solid to liquid state takes place at normal atmospheric pressure. This temperature ideally corresponds to the solidification or freezing temperature.

Under the conditions of this study the melting point of the test material was not below 400 °C.

Description of key information

Under the conditions of this study the melting point of the test material was not below 400 °C.

Key value for chemical safety assessment

Additional information

The melting point of the test material was investigated in accordance with the standardised guidelines OECD 102, EU Method A.1 and OPPTS 830.7200, under GLP conditions.

A preliminary test was performed using a thermogravimetric analyser (TGA) as a safety precaution for the DSC (differential scanning calorimeter) main test. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).

No effects were observed which were due to melting of the test material in the preliminary or main test. After the experiment, the sample appeared unchanged, i.e. no decomposition and/or evaporation were observed.

The melting temperature is defined as the temperature at which the phase transition from solid to liquid state takes place at normal atmospheric pressure. This temperature ideally corresponds to the solidification or freezing temperature.

Under the conditions of this study the melting point of the test material was not below 400 °C.