Registration Dossier
Registration Dossier
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EC number: 278-108-4 | CAS number: 75199-00-7
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:
- June 11, 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
- Decomposition:
- yes
- Decomp. temp.:
- > 220 °C
- Executive summary:
The test item had no melting point and no boiling point at atmospheric conditions. Decomposition started at approx. 220 °C.
Reference
Melting point / melting range // boiling point / boiling range: Differential scanning calorimetry
The first DSC measurement in an aluminium crucible with a hole showed a endothermal effect in the temperature range of 120 – 220 °C, directly followed by a multistage exothermal effect. A second measurement was stopped after the endothermal effect and before the exothermal effects. Visual inspection showed no melting. The test item seemed to be unchanged.
The results of the DSC measurements are summarized in Table1.
Table1: DSC measurements
Ident No. |
Test item / mg |
Starting temperature / °C |
Final test temperature / °C |
Temperature range / °C |
Crucible |
Observations after the measurement |
38031 |
23.87 |
25 |
500 |
120–220 >220 |
Aluminium with a hole |
Test item was a black solid after the measurement; mass loss: 29 % |
38032 |
16.74 |
25 |
240 |
120 – 155 |
Aluminium with a hole |
Test item was unchanged after the measurement; mass loss: 9 % |
Under consideration of the result from the DSC measurement it was concluded that the test item had no melting point and no boiling point at atmospheric conditions. Decomposition started at approx. 220 °C.
Description of key information
The test item had no melting point and no boiling point at atmospheric conditions. Decomposition started at approx. 220 °C.
Key value for chemical safety assessment
Additional information
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