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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 271-843-1 | CAS number: 68609-93-8
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:
- From April 23, 2013 to May 22, 2013
- 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:
- equivalent or similar to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- not specified
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- > 318 °C
- Remarks on result:
- other: (i.e., for crystalline subcomponents)
- Conclusions:
- Under the study conditions, the test substance showed no melting of crystalline subcomponents up to 318°C (in the first - fifth heating run; at ambient pressure). The heating run showed a glass transition temperature (amorphous components) at 29°C (first heating run). The cooling runs showed no crystallization.
- Executive summary:
A study was conducted to determine the melting point of the test substance according to OECD Guideline 102 and EU Method A.1. The determination of the melting point was carried out with the test substance by differential scanning calorimetry (i.e., DSC). Under the study conditions, the test substance showed no melting of crystalline subcomponents up to 318°C (in the first - fifth heating run; at ambient pressure). The heating run showed a glass transition temperature (amorphous components) at 29°C (first heating run). The cooling runs showed no crystallization (Kintrup, 2013).
Reference
From 318 °C the test substance shows most probably a thermal decomposition with melting (a melting > 318 °C can not be excluded) and evaporation of the decomposition components. A vaporization of significant parts of the test substance cannot be completely excluded.
The cooling runs show no crystallisation. The test substance shows a glass transition temperature (amorphous components) at 29 °C (first heating run).
Description of key information
The melting point was determined according to OECD Guideline 102 and EU Method A.1 (Kintrup, 2013).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 318 °C
Additional information
No melting of crystalline subcomponents up to 318°C. A glass transition temperature (amorphous components) at 29°C. The cooling runs showed no crystallisation.
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.
