Registration Dossier
Registration Dossier
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EC number: 241-367-9 | CAS number: 17345-61-8
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- May 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- May 31, 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- July 27, 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Version / remarks:
- March 1998
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- 154.9 °C
- Conclusions:
- The melting and boiling temperature of CH02906 were determined by DSC.
The melting temperature of the test item was 154.9°C (428.0K).
Reaction and/or decomposition of the test item was observed during DSC experiments during and after melting of the test item. Boiling of the test item was not observed below the temperature at which reaction and/or decomposition started. Based on this, the test item has no boiling temperature.
Reference
Preliminary Test
Starting at 225°C, the weight of the sample decreased significantly. At 307°C, the sample weight had decreased by 25%.
After the experiment, a black molten residue remained in the sample container (original colour: white to brownish). The change of the colour indicated reaction and/or decomposition of the test item.
Main Study
An endothermic peak immediately followed by a small exothermic signal was observed between 150°C and 175°C. The extrapolated onset temperature of the peak was 154.945°C. The endothermic effect was most likely obtained due to melting of the test item.
After the experiment, a brown/black molten residue remained in the sample container.
In order to investigate the melting peak, Experiment 2 was stopped after the melting peak at 175°C. The extrapolated onset temperature was 154.816°C. After the experiment, a yellowish molten residue remained in the sample container. It demonstrated that melting and reaction and/or decomposition of the test item was the reason for the endothermic effect.
The melting temperature was determined as the mean melting temperature of Experiment 1 (154.945°C) and Experiment 2 (154.816°C).
Description of key information
Determined according to OECD 102 Guideline.
The melting and boiling temperature of CH02906 were determined by DSC.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 154.9 °C
Additional information
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