Registration Dossier
Registration Dossier
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EC number: 216-706-9 | CAS number: 1646-26-0
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:
- 19 January 2017
- 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)
- Version / remarks:
- 1995
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Version / remarks:
- 1998
- Qualifier:
- according to guideline
- Guideline:
- other: CIPAC MT 1: Freezing Point
- Version / remarks:
- 2009
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- 70.7 °C
- Atm. press.:
- 1 024 hPa
- Decomposition:
- no
- Conclusions:
- A melting point value of 70.7 °C (at 1024 hPa) was determined for the test substance according to E.U. Method A.1.
Reference
Results
In the temperature range of 70 - 90 °C an endothermic effect (melting), was observed. Between approx. 170 - 290 °C a second endothermic effect (boiling) could be detected. The results are reported in the following table. No further thermal effects were observed up to the maximum test temperature of 500 °C.
No. |
Sample weight / mg |
Onset of Effect / °C |
Range of effect / °C |
Weight loss / mg |
Atmospheric pressure / hPa |
PN12654 |
16.34 |
70.43 270.41 |
70 - 90 (endo) 170 - 290 (endo) |
16.04 |
1024.0 |
PN12655 |
17.90 |
70.96 270.56 |
70 - 90 (endo) 180 - 290 (endo) |
17.68 |
1024.0 |
During the heating phase an endothermic effect was observed in the temperature range of 70 - 90 °C, which can be assigned to 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 70.70 °C, the test item has a melting point of 70.7 °C.
Final Results
The test item has a melting point of 70.7 °C at atmospheric pressure (1024 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: 70.7 °C at 1024 hPa (EU Method A.1., differential scanning calorimetry).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 70.7 °C
Additional information
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