Registration Dossier
Registration Dossier
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EC number: 615-064-0 | CAS number: 700874-87-9
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 18 February 2016 to 09 June 2016.
- 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:
- 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Version / remarks:
- 1998
- Deviations:
- no
- Principles of method if other than guideline:
- After DSC experiments, an experiment was performed in which the consistency of the substance was determined by visual examination after storage in freezers at -20°C and -80°C. The additional experiment is not described in the guidelines but was reported in sufficient detail.
- GLP compliance:
- yes
- Type of method:
- other: Differential scanning calorimetry and visual examination after storage in freezer.
- Key result
- Melting / freezing pt.:
- < -80 °C
- Remarks on result:
- other: Visual examination
- Melting / freezing pt.:
- < -90 °C
- Remarks on result:
- other: by DSC
- Conclusions:
- The freezing temperature of the test item was determined to be < -80°C.
- Executive summary:
The freezing temperature was determined by Differential Scanning Calorimetry (DSC) under GLP and according to recognized guidelines (EC A.1, OECD 102 and OPPTS 830.7200) and visual examination after storage in freezer . No deviations from the guideline was observed during the test.
No freezing point was observed during the DSC experiment.
In a non-guideline experiment (visual examination after storage in freezer), the substance at -80°C was observed to be a liquid.
Based on both methods, the freezing temperature of the test item was concluded to be < -80°C.
Reference
DSC analysis:
In none of three DSC experiments, melting/freezing was observed in the temperature range tested (-90°C to -20°C).
Visual examination at negative temperature:
The test item is still liquid after storage at -20°C and -80°C.
Description of key information
The freezing temperature was determined by Differential Scanning Calorimetry (DSC) under GLP and according to recognized guidelines (EC A.1, OECD 102 and OPPTS 830.7200) and visual examination after storage in freezer . No deviations from the guideline was observed during the test.
No freezing point was observed during the DSC experiment.
In a non-guideline experiment (visual examination after storage in freezer), the substance at -80°C was observed to be a liquid.
Based on both methods, the freezing temperature of the test item was concluded to be < -80°C.
For safety assessment purpose the key value is set equal to - 80 °C.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -80 °C
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.
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