Registration Dossier
Registration Dossier
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EC number: 219-842-7 | CAS number: 2550-02-9
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:
- 10 Jun 2011 - 17 Jun 2011.
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- GLP compliance:
- no
- Type of method:
- thermal analysis
- Remarks:
- Differential scanning calorimetry
- Melting / freezing pt.:
- < -100 °C
- Atm. press.:
- 1 013 hPa
- Remarks on result:
- other: Standard pressure was assumed
- Conclusions:
- A melting point value of < -100°C at 1013 hPa was determined in a reliable study conducted according to an appropriate test protocol, and in compliance with GLP.
Reference
Results
No melting point was found between -150°C and +35°C under these conditions, but it is noted that crystallisation processes are often impaired by supercooling, due to a kinetic delay of the transformation caused by inhibited nucleation.
Neither during cooling nor upon heating any significant thermal effects from glass transition, crystallisation or melting were registered.
Description of key information
< -100°C at 1013 hPa (measured)
Key value for chemical safety assessment
Additional information
A melting point value of < -100°C (1013 hPa) was determined by differential scanning calorimetry according to EU Test Method A.1.
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