Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 943-154-2 | CAS number: -
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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- GLP compliance:
- no
- Type of method:
- thermal analysis
- Melting / freezing pt.:
- ca. 199.42 °C
- Atm. press.:
- ca. 1 atm
- Decomposition:
- yes
- Decomp. temp.:
- ca. 199.42 °C
- Conclusions:
- The substance was tested for melting point determination following OECD 102 (DSC analysis). Under the experimental conditions the melting point/decomposition is 199.4°C.
- Executive summary:
The substance was tested for melting point determination following OECD 102 (Ricci, 2016). Under the experimental conditions an endothermic process, more likley a melting transition with decomposition process, is observed at 199.4°C. A second scan in the same range of temperatures did not show any process anymore and the IR vibrations of the substance before and after the transition are diffirent, demonstrating a chemical rearrangment of the substance (decomposition).
Reference
A first transition is observed at -25.9°C probably due to the transition from the crystalline to the amorphous phase. A second endothermic process is recorded at 199.4°C (reaarrangement of the physical state of the substance with metling and partial decomposition). A second scan shows that the first transition is less present and that no other phenomenon is recorded anymore, which triggers the results of modification of the structure of the substance. These findings are confirmed by IR analyses that show different vibrations of the substance before and after the phenomenon, most likely a decomposition of the substance during melting.
Description of key information
decomposition at 199.4°C
Key value for chemical safety assessment
Additional information
The substance was tested for melting point determination following OECD 102 (Ricci, 2016). Under the experimental conditions an endothermic process, more likley a melting transition with decomposition process, is observed at 199.4°C. A second scan in the same range of temperatures did not show any process anymore and the IR vibrations of the substance before and after the transition are diffirent, demonstrating a chemical rearrangment of the substance (decomposition).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
