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EC number: 844-232-8 | CAS number: 102731-54-4
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:
- from 2020-02-10 to 2020-02-17
- 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:
- 27 July 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- 31 May 2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- -23.5 °C
- Decomposition:
- no
- Sublimation:
- no
- Conclusions:
- The test item has a mean freezing point of - 23.5 °C.
- Executive summary:
A study was conducted in order to determine the melting point of the test item according to OECD test guideline 102 and European Commission Regulation (EC) No. 440/2008, Method A.1. Differential scanning calorimetry (DSC) measurements were performed. The test item cooled down from room temperature to - 40 °C. Using a linear heating rate of 0.5 °C/min the freezing point of the test item was determined to be - 23.5 °C (249.6 K). This value is the mean of two measurements.
Reference
The evaluation of the data was performed using the software STARe. As result, a thermogram was obtained in which the heat flow of the investigated sample is given as a function of the temperature. By integrating the area under the heat flow signals, the enthalpy of the process was obtained. Using a linear heating rate of 0.5 °C/min the freezing point of the test item was determined to be - 23.5 °C (249.6 K).
Description of key information
The test item has a mean freezing point of - 23.5 °C.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -23.5 °C
Additional information
A study was conducted in order to determine the melting point of the test item according to OECD test guideline 102 and European Commission Regulation (EC) No. 440/2008, Method A.1. Differential scanning calorimetry (DSC) measurements were performed. The test item cooled down from room temperature to - 40 °C. Using a linear heating rate of 0.5 °C/min the freezing point of the test item was determined to be - 23.5 °C (249.6 K). This value is the mean of two measurements.
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