Registration Dossier
Registration Dossier
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EC number: 234-758-0 | CAS number: 12031-80-0
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:
- 09 JUL 2021 - 29 SEP 2021
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- Official Journal of the European Union L 142 of 31 May 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- adopted July 27, 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Version / remarks:
- United States Environmental Protection Agency (EPA), March 1998
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Decomposition:
- yes
- Remarks:
- most likely the peroxide group
- Decomp. temp.:
- >= 490 °C
- Remarks on result:
- not determinable
- Conclusions:
- Using a linear heating rate from room temperature up to 500 °C no melting point was observed. Based on the thermograms, the weight loss and the appearance of test item after the tests it is concluded that the test item decomposes before melting.
- Executive summary:
The melting point test was carried out according to OECD Guideline 102 and EC Method A.1 and under GLP compliance.
For the determination of the melting point the differential scanning calorimetry method was used and two independent experiments were noted. Applying a linear heating rate from room temperature up to 500 °C a melting point was not observed. Based on the thermograms and the appearance of test item after the tests it can be concluded that the test item decomposes before melting.
Reference
During the heating the test item showed two endothermic signals. First in the temperature range of approx. 320 – 390 °C that can be associated with the desorption or sublimation of a part of the test item. In the temperature range between approx. 414 – 426 °C another endothermic peak could be observed, which was assumed a partial melting of a part of the test item. From ca. 490 °C onwards an exothermic peak can be seen which was associated with the decomposition of the test item (most likely the peroxide group), as also a significant weight loss is observed at the end of the test.
Description of key information
The melting point test was carried out according to OECD Guideline 102 and EC Method A.1 and under GLP compliance.
For the determination of the melting point the differential scanning calorimetry method was used and two independent experiments were noted. Applying a linear heating rate from room temperature up to 500 °C a melting point was not observed. Based on the thermograms and the appearance of test item after the tests it can be concluded that the test item decomposes before melting.
Key value for chemical safety assessment
Additional information
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