Registration Dossier
Registration Dossier
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EC number: 236-910-1 | CAS number: 13537-82-1
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 11 May 2017 to 06 July 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same 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:
- DSC experiments were performed according to the above mentioned guidelines. To futher investigate the melting temperature of the substance, an additional experiment was performed in which the consistency of the substance was determined by visual examination after storage in freezers at ca. -20°C and at ca. -80°C. The additional experiment is not a guideline study but was described 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: The substance is a liquid at ca. -20°C and a very viscous liquid at ca. -80°C.
- Melting / freezing pt.:
- < -90 °C
- Remarks on result:
- other: No thermal effect due to freezing between 25°C and -90°C (DSC Experiment 1).
- Conclusions:
- The substance has no freezing point at temperatures down to -80°C.
- Executive summary:
DSC showed no thermal effect due to freezing of the substance between 25°C and -90°C (GLP study according to EC A.1, OECD 102 and OPPTS 830.7200). After storage in freezer, the substance was visually observed to be a liquid at ca. -20°C and a very viscous liquid at ca. -80°C. Based on all results, it was concluded that the substance has no freezing point at temperatures down to -80°C.
Reference
Description of key information
< -80°C (EC A.1, OECD 102, OPPTS 830.7200: DSC)
Key value for chemical safety assessment
Additional information
DSC showed no thermal freezing effect between 25°C and -90°C (EC A.1, OECD 102 and OPPTS 830.7200). After storage in freezer, the substance was visually observed to be a liquid at ca. -20°C and a very viscous liquid at ca. -80°C. It was concluded that the substance has no freezing point at temperatures down to -80°C.
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