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EC number: 236-187-2 | CAS number: 13215-88-8
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:
- 25 to 26 July 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 1 (2009): Freezing Point
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- -59.2 °C
- Atm. press.:
- 1 005 hPa
- Decomposition:
- no
- Conclusions:
- A melting point value of -59.2 °C (at 1005 hPa) was determined for the test substance according to E.U. Method A.1.
Reference
Results
In the temperature range of -70 to 40 °C an endothermic effect (melting) was observed. Between approx. 70 - 380 °C a second endothermic effect (boiling) could be detected.
Results of the DSC-measurements
No. |
Sample weight / mg |
Onset of Effect / °C |
Range of effect / °C |
Weight loss / mg |
Atmospheric pressure / hPa |
PN11461 |
17.12 |
-59.15 |
-70 to 40 (endo) |
17.05 |
1005.6 |
PN11473 |
17.28 |
-59.21 |
-70 to 20 (endo) |
17.09 |
1005.4 |
During the cooling phase, no thermal effect was observed, which can be assigned to the freezing of the test item.
During the heating phase a distinct endothermic effect was observed in the temperature range of -70 to 40 °C, which can be assigned to the melting of the test item. As the onset temperatures in both tests deviate less than 0.5 K from their mean value of -59.18 °C, the test item has a melting point of -59.2 °C.
The test item showed a second endothermic signal in the
temperature range of approx.
70 - 380 °C that can be assigned to the boiling of the test item. No
further thermal effects were observed up to the maximum test temperature
of 500 °C.
Final Results
The test item has a melting point of -59.2 °C at atmospheric pressure (1005 hPa) as determined by differential scanning calorimetry according to Regulation EC No. 440/2008 Method A.1. and OECD Test Guideline 102 (1995).
Description of key information
Melting point: -59.2 °C at 1005 hPa (EU Method A.1, differential scanning calorimetry)
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -59.2 °C
Additional information
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