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EC number: 265-314-4 | CAS number: 65036-46-6
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Justification for type of information:
- Read-across from alternative salt forms of this substance is justified. See the jusitifcation document in section 13 for more details.
- Reason / purpose for cross-reference:
- read-across source
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- > 200 °C
- Remarks on result:
- other: no melting temp. up to 200°C
- Conclusions:
- The study with the read-across substance showed no melting temperature between 0 °C and decomposition of the test item, starting at about 200 °C.
Reference
No melting temperature was found between 0°C and decomposition of the test item, starting at about 200°C.
Observed thermic processes:
After Test 1 the test item was not molten up and did not show any visual change. This was a clear indication that the observed endothermic peak at 138°C peak temperature and the registered weight loss of 1.8 % showed the vaporization of volatile components of the test item. After Test 2 the test item was not molten up. It was sintered and the color changed into black. This was a clear indication that the observed exothermic area starting at about 200°C with the registered weight loss of 11.4 % showed the decomposition of the test item. The small endothermic maximum in the 2"d heating at about 120°C to 160°C might be the melting of a secondary component, but not of the test item itself, because the test item was powdery as before after Test 1. These observations are confirmed by the preliminary TG/DSC-Test (non-GLP).
Description of key information
Melting point is not determined for the substance as decomposition was
observed at temperatures >200 °C in the study with the
read-across substance. This is expected also for the registered
substance.
Key value for chemical safety assessment
Additional information
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