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EC number: 241-997-4 | CAS number: 18096-62-3
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:
- 21-Aug-2014
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to other 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)
- GLP compliance:
- no
- Type of method:
- thermal analysis
- Remarks:
- Differential Scanning Calorimetry (DSC)
- Key result
- Melting / freezing pt.:
- 36.4 °C
- Atm. press.:
- 1 013 hPa
- Conclusions:
- A melting point value of 36.4 °C (at 1013 hPa) was determined for the test substance according to E.U. Method A.1.
Reference
Results
In the thermograms of the two DSC runs (nos. PN7334 and PN7336) an endothermic effect (melting) was observed in the temperature range of 30 – 60 °C. Between 150 - 290 °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) |
PN7334 |
13.22 |
36.39 275.42 |
30-60 (endo) 150-290 (endo) |
13.17 |
1005.5 |
PN7336 |
11.99 |
36.48 276.04 |
30-60 (endo) 150-290 (endo) |
11.92 |
1005.0 |
The distinct endothermic effect in the temperature range of 30 – 60 °C can be associated with the melting of the test item. As the onset temperatures in both tests do not deviate by more than 0.5 K from their mean value of 36.44 °C, this temperature can be used a melting point. The test item has a melting point of 36.4 °C.
Final Results
The test item has a melting point of 36.4 °C at atmospheric pressure (1013 hPa) as determined by differential scanning calorimetry according to Directive EC40/2008 Method A.1., OECD Test Guideline 102 (1995), EPA OCSPP 830.7200 (1998) and CIPAC MT 1 (2009).
Description of key information
Melting point: 36.4 °C at 1013 hPa (EU Method A.1, differential scanning calorimetry)
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 36.4 °C
Additional information
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