Registration Dossier
Registration Dossier
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EC number: 205-351-5 | CAS number: 139-07-1
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 July 04, 2019 to July 12, 2019
- 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
- Key result
- Melting / freezing pt.:
- 45.2 °C
- Atm. press.:
- 1 011.2 hPa
- Decomposition:
- no
- Conclusions:
- Under the study conditions, melting point of the test substance was determined to be 45.2˚C at 1011.2 hPa.
- Executive summary:
A study was conducted to determine the melting point of the test substance, using differential scanning calorimetry method, according to the OECD Guideline 102 and EU Method A.1, in compliance with GLP. Under the study conditions, the melting point of the test substance was determined to be 45.2°C at 1011.2 hPa (Hartmann, 2019).
Reference
The thermograms of the DSC runs PN18048 and PN18050 are shown in Figure 1 and Figure 2 (Kindly refer the attached background material secrion of the IUCLID). In the temperature range of 30 - 60°C, an endothermic effect (melting) was observed. Between 140 - 240°C a second endothermic effect could be detected. An exothermic effect is detected in the temperature range of 240 - 290°C. During the heating phase a distinct endothermic effect was observed in the temperature range of 30 - 60°C, which can be assigned to the melting of the test substance. As the onset temperatures in both tests do not deviate by more than 0.5 K from their mean value of 45.21°C, this temperature can be used as melting point. The test substance has a melting point of 45.2°C at atmospheric pressure (1011.2 hPa).
Description of key information
The melting point of the test substance was determined using the differential scanning calorimetry method, according to OECD Guideline 102 and EU Method A.1 (Hartmann, 2019).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 45.2 °C
Additional information
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