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EC number: 272-615-4 | CAS number: 68892-41-1
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:
- 2017-09-21 to 2018-02-12
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- >= 90 - <= 120 °C
- Atm. press.:
- ca. 1 013.3 hPa
- Decomposition:
- yes
- Remarks:
- After melting, decomposition started
- Remarks on result:
- other: Exact melting point could not be determined
- Conclusions:
- The test item had a melting range of 90 to 120 °C. After melting, decomposition began.
- Executive summary:
The melting point / melting range of the test item was determined by DSC measurement according to OECD 102. The test item had a melting range of 90 to 120 °C under atmospheric conditions. After the melting range, decomposition of the sample was observed.
Reference
Two DSC measurements with a heating rate of 10 K/min showed an endothermal effect (melting) in the temperature range of 90 to 120 °C. The second measurement was terminated at 150 °C to ensure that the endothermal effect is the melting effect.
The results of the DSC measurements are shown below:
Table 1: Melting point (DSC measurements)
DSC run |
Weigh-in / mg |
Starting temperature / °C |
Final test temperature / °C |
Temperature range (endothermal) / °C |
Onset / °C |
Crucible |
Observations after the measurement |
1 |
11.28 |
25 |
500 |
90 - 120 |
100.6 |
Aluminium with hole |
Black residue, mass loss: 76% |
2 |
11.67 |
25 |
150 |
90 - 120 |
94.3 |
Aluminium with hole |
Test item was a solidified melt, mass loss: 2% |
Description of key information
The melting point / melting range of the test item was determined by DSC measurement according to OECD 102. The test item had a melting range of 90 to 120 °C under atmospheric conditions. After the melting range, decomposition of the sample was observed.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 97.5 °C
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