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EC number: 203-214-4 | CAS number: 104-57-4
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 2015-10-30 to 2016-01-06
- 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)
- Deviations:
- no
- GLP compliance:
- no
- Remarks:
- The study was conducted under supervision of a quality assurance unit which had ensured e.g instrumentation validation, reagent/materials certification, analyst certification and providing standard operating procedures.
- Other quality assurance:
- other: SOP-LA-011 Melting Point by DSC
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- -26.55 °C
- Atm. press.:
- 986.4 hPa
- Decomposition:
- no
- Remarks on result:
- other: Range of effect: -40 to -10 °C; 150 to 220 °C
- Key result
- Melting / freezing pt.:
- -26.57 °C
- Atm. press.:
- 1 013.7 hPa
- Decomposition:
- no
- Remarks on result:
- other: Range of effect: -40 to -10 °C; 120 to 220
- Conclusions:
- The test item has a melting point of -26.6 °C at atmospheric pressure (986 hPa or 1014 hPa, respectively) as determined by differential scanning calorimetry.
- Executive summary:
The test item has a melting point of -26.6 °C at atmospheric pressure (986 hPa or 1014 hPa, respectively) as determined by differential scanning calorimetry according to Regulation EC no. 440/2008 Method A.1. and OECD Test Guideline 102 (1995). In the temperature range of -40 to -10 °C, an endothermic effect (melting) was observed. Between approx. 120 - 220 °C a second endothermic effect (boiling) could be detected.
Reference
During the cooling phase, an exothermal effect was observed at a temperature of approx. -50 °C, which can be associated with the freezing of the test item.
During the heating phase a distinct endothermic effect was observed in the temperature range of -40 to -10 °C, which can be associated with the melting of the test item. As the onset temperatures in both tests deviate by less than 0.5 K from their mean value of -26.56 °C, the test item has a melting point of -26.6 °C.
The test item showed a second endothermic signal in the temperature range of approx. 120 - 220 °C that can be associated with the boiling of the test item.
Description of key information
The test item has a melting point of -26.6 °C at atmospheric pressure (986 hPa or 1014 hPa, respectively) as determined by differential scanning calorimetry according to Regulation EC No. 440/2008 Method A.1. and OECD Test Guideline 102 (1995).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -26.6 °C
Additional information
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