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EC number: 225-004-1 | CAS number: 4602-84-0
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:
- 16 October 2014 - 17 October 2014
- 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)
- Version / remarks:
- 2008
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- < -100 °C
- Atm. press.:
- 997 hPa
- Conclusions:
- The melting point of the test item is less than -100°C.
- Executive summary:
The melting point of the test item is less than -100°C, as determined by differential scanning calorimetry. This study is considered reliable without restriction (Klimisch 1) as it was conducted according to OECD 102 and EU A.1. GLP-compliance was not reported.
Reference
Table 1. Results of the DSC measurements
| Sample number | Sample weight (mg) | Onset of effect (°C) |
Range of effect (°C) |
Weight loss (mg) | Atmospheric pressure (hPa) |
1 |
14.99 |
296.58 |
220 - 350 (endothermic) |
14.99 | 994.0 |
| 2 | 13.20 | 299.54 | 170 - 340 (endothermic) | 13.20 | 996.8 |
No thermal effects were observed in the temperature range of -100 – 25 °C. It can be assumed that the test item has no melting or freezing point in this temperature range. Therefore the test item has no melting point down to a temperature of -100 °C. Between approximately 170 – 350 °C an endothermic effect (boiling) could be detected.
Description of key information
The liquid was cooled to -100°C but no melting point was observed. Therefore, the melting point of the test item is less than -100°C at atmospheric pressure, as determined by differential scanning calorimetry.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -100 °C
Additional information
This study is considered reliable without restriction (Klimisch 1) as it was conducted according to OECD 102 and EU A.1.
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