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EC number: 228-800-7 | CAS number: 6359-50-8
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:
- April 24, 2018 - April 25, 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- > 119 - < 122 °C
- Decomposition:
- yes
- Decomp. temp.:
- > 122 °C
- Executive summary:
The test item had a melting range of 119 – 122°C.
Reference
Melting point / melting range: DSC measurement
Three DSC measurements with a heating rate of 10 K/min showed an endothermal effect (melting) in the temperature range of 100 – 135 °C. The onset temperature (seeTable1) was derived from the intersection of the tangent line with the highest slope of the endothermal peak with the baseline. After melting the test item decomposed. The results of the DSC measurements are summarized inTable 1.
Table1: Melting point (DSC measurements)
Ident No. |
Test item / mg |
Starting temperature / °C |
Final test temperature / °C |
Temperature range (endo-thermal) / °C |
Onset (melting) / °C |
Crucible |
Observations after the measurement |
36964 |
13.39 |
25 |
500 |
100 –135 |
119.93 |
Aluminium with a hole |
Test item was a black solid: mass loss 91% |
36966 |
11.53 |
25 |
150 |
100 –135 |
121.20 |
Aluminium with a hole |
Test item was a solidified red melt: mass loss 2 % |
36972 |
13.73 |
25 |
150 |
100 –130 |
119.37 |
Aluminium with a hole |
Test item was a solidified red melt: mass loss 2 % |
Under consideration of the result from the DSC measurement and the visual inspection of the test item after the measurement it was concluded that the test item melted within a temperature range of 119 – 122 °C.
Description of key information
The test item had a melting range of 119 – 122°C.
Key value for chemical safety assessment
Additional information
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