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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 268-626-9 | CAS number: 68131-73-7
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:
- 04 February 2010 - 12 February 2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- 27th July 1995
- Deviations:
- yes
- Remarks:
- Only one temperature: -25 °C
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- 18 march 2002
- Deviations:
- yes
- Remarks:
- Heating was omitted
- Principles of method if other than guideline:
- The sample is a fluid at + 20 °C. Literature indicates that the freezing point is < - 20 °C. A pour point analysis is performed at only one temperature such as - 25 °C.
- GLP compliance:
- no
- Type of method:
- pour point
- Melting / freezing pt.:
- < -20 °C
- Atm. press.:
- 101 325 Pa
- Conclusions:
- The freezing point of the substance is below - 20 °C.
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 06 April 2010 - 12 April 2010
- 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:
- 18 march 2002
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- 27th July 1995
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- thermal analysis
- Remarks:
- DSC
- Melting / freezing pt.:
- < -70 °C
- Atm. press.:
- 101 325 Pa
- Remarks on result:
- other: A glass transition with an onset of -66.8 °C and a midpoint of -66.1 °C was detected.
- Conclusions:
- The freezing point of the substance is below - 70 °C, while a glass transition with Tonset at - 66.8 °C and Tmidpoint at - 66.1 °C was identified.
Referenceopen allclose all
After 1 week the surface of the substance moves very slowly, the substance is still fluid, but highly viscous.
A small rise in temperature may have occurred by removing the tubes from the freezer, however it can be indicated that the freezing point is below - 20 °C.
The substance shows a glass transition, with an endothermic relaxation.
Description of key information
The freezing point of the substance is below -20 °C.
Key value for chemical safety assessment
Additional information
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.
