Registration Dossier
Registration Dossier
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EC number: 944-536-1 | CAS number: -
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
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- GLP compliance:
- no
- Type of method:
- method to determine freezing temperature
- Key result
- Melting / freezing pt.:
- -24 °C
- Atm. press.:
- 101.2 kPa
- Remarks on result:
- other: Mean of 2 runs
- Conclusions:
- The freezing point of the test item was determined to be -24°C at 101.2 KPa.
- Executive summary:
The freezing point of the test item was determined by using a freezing temperature method according to OECD TG 102. The freezing point was determined to be -24°C at 101.2 KPa. The melting point of the test item could not be determined at a temperature range of -170°C to 20°C by Different Scanning Calorimeter (DSC). There was no endothermic peak. The study is reliable with restrictions, being non-GLP compliant, but having followed a standard guideline.
Reference
Table 1. Measured temperature at regular intervals for both runs 1 and 2.
| Temperature (°C) | ||
| Time (min) | Run 1 | Run2 |
| 0 | 20.5 | 20.8 |
| 1 | 15 | 15.5 |
| 2 | 4.5 | 4 |
| 3 | -3 | -2.5 |
| 4 | -12.8 | -12 |
| 5 | -20.5 | -20 |
| 6 | -24 | -23.7 |
| 7 | -24.3 | -24 |
| Freezing Temperature | -24.3 | -24 |
| Average | -24.2 | |
Description of key information
The freezing point of the test item was determined to be -24°C (249 K) at atmospheric pressure. The melting point of the test item could not be determined at a temperature range from -170°C to 20°C by Differential Scanning Calorimetry.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -24 °C
Additional information
The freezing point of the test item was assessed by Differential Scanning Calorimetry conducted according to OECD TG 102 guideline. The study is a guideline, non-GLP, experimental study, acceptable for assessment of this endpoint (2013).
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