Registration Dossier
Registration Dossier
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EC number: 611-915-5 | CAS number: 59941-98-9
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:
- 14 March 2017- 11 April 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:
- July 27, 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- May 1, 2008
- 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.:
- 237.2 °C
- Decomposition:
- yes
- Remarks:
- Reaction and/or decomposition of the test item was observed during DSC experiments during and after melting.
- Conclusions:
- The melting and boiling temperature of V123109 were determined by DSC.
The melting temperature of the test item was 237.2°C (510.4K). The estimated accuracy, according to the OECD Guideline 102, for this method is ± 0.5°C.
Reaction and/or decomposition of the test item was observed during DSC experiments during and after melting. 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 315°C, the weight of the sample decreased significantly. At 342°C, the sample weight had decreased by 25%.
After the experiment, a black molten residue remained in the sample container (original colour: white). The change of the colour indicated reaction and/or decomposition of the test item.
Main Study
An endothermic peak was observed between 200°C and 250°C. The extrapolated onset temperature of the peak was 237.431°C. The endothermic effect was most likely obtained due to melting of the test item. An exothermic peak was observed between 275°C and 342°C. The exothermic effect was due to reaction and/or decomposition 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 directly after the melting peak. The extrapolated onset temperature was 237.051°C. After the experiment, a light yellow molten residue remained in the sample container (original colour: white) container. Based on this visual observation, it was found that the test item had molten and the change of the colour demonstrated reaction and/or decomposition of the test item.
The melting temperature was determined as the mean melting temperature of Experiment 1 (237.431°C) and Experiment 2 (237.051°C)
Description of key information
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 237.2 °C
Additional information
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