Registration Dossier
Registration Dossier
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EC number: 280-676-3 | CAS number: 83733-23-7
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:
- April 24, 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.:
- > 260 °C
- Executive summary:
The test itemhad no melting point and no boiling point at atmospheric conditions. Decomposition started at approx. 260 °C.
Reference
Melting point / melting range // boiling point / boiling range: Differential scanning calorimetry
The DSC measurement in an aluminium crucible with a hole showed a endothermal effect in the temperature range of 80 – 255 °C, directly followed by an exothermal effect (260 – 470 °C). After the measurement up to a final temperature of 500 °C the test item was a black solid. 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 |
36963 |
13.37 |
25 |
500 |
80 – 255 |
Aluminium with a hole |
Test item was a black solid after the measurement; mass loss: 36 % |
36965 |
14.37 |
25 |
250 |
85 – 250 |
Aluminium with a hole |
Test item was unchanged after the measurement; mass loss: 8 % |
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 had no melting point and no boiling point at atmospheric conditions. Decomposition started at approx. 260 °C.
Description of key information
The test itemhad no melting point and no boiling point at atmospheric conditions. Decomposition started at approx. 260 °C.
Key value for chemical safety assessment
Additional information
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