Registration Dossier
Registration Dossier
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: 272-221-2 | CAS number: 68784-12-3
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)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- thermal analysis
- Remarks:
- Differential Scanning Calorimetry
- Melting / freezing pt.:
- -8 °C
- Decomposition:
- no
- Conclusions:
- The melting point of the test substance is -8°C.
- Executive summary:
The melting point was found to be -8 °C in a study performed according to OECD 102 and GLP.
Reference
| Extrapolated onset temperature (°C) | Peak temperature (°C)* | Extrapolated end temperature (°C) | |
| measurement A | -32.0 | -8.4 | -5.3 |
| measurement B | -31.7 | -8.2 | -5.0 |
| mean | -32 | -8 | -5 |
*:with Seebeck correction
The test item shows a broad melting range from about -32°C up to about -5°C.
The melting point was found to be at -8°C (peak temperature).
Estimated accuracy: ± 1°C
Observed thermic processes:
A very small peak was observed at about -60°C. This may due to a secondary component.
A reproducible glass transition was found at -47°C in the 2nd heating.
An endothermic peak starting at about 340°C, with the registered loss of mass, shows the vaporization of the test item.
To survey the thermic behaviour of the test item the determination was run up to 500°C. Exothermic decomposition was not observed.
Description of key information
Melting point: -8°C
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -8 °C
Additional information
The test item shows a broad melting range from about -32°C up to about -5°C in a test according to OECD 102. The melting point was found to be at -8°C.
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.
