Registration Dossier
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EC number: 425-560-7 | CAS number: -
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:
- 03 APR 2000 - 21 JUN 2000
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- reference to other study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- Guuideline 92/69/EEC of 31 July 1992
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- differential scanning calorimetry
- Melting / freezing pt.:
- 64.8 °C
- Decomposition:
- no
- Sublimation:
- no
- Remarks on result:
- other: refer to 'Remarks'
- Remarks:
- no atm. pressure mentioned in the report, but 1013 hPa as standard conditions can be assumed
- Conclusions:
- The mean melting point is 64.8 °C.
- Executive summary:
The determination of the melting point was carried out by differential scanning calorimetry (DSC) according to Guideline 92/69/EEC A.1. under GLP conditions. The melting point is referred to the onset temperature. The mean melting point is 64.8 °C.
Reference
The measurement in a closed glass pan shows an endothermic effect (melting) in the range 50-90 °C, with an onset of 64 °C, a small endothermic effect at a temperature of ca. 125 °C (transition of the liquid crystalline to the isotropic phase; information by the producer) and an exothermal decomposition in the range 185-310 °C, with a decomposition energy of 268 J/g, and a second one in the range 355-450 °C, with a decomposition energy of 328 J/g.
In aluminium pans, the diagrams show the endothermal effect (melting) in the range between 50 and 80 °C, with a medium onset of 64.8 °C, a small endothermic effect at a temperature of ca. 125 °C and an exothermal decomposition beginning at about 190 °C.
Description of key information
The determination of the melting point was carried out by differential scanning calorimetry (DSC) according to Guideline 92/69/EEC A.1. under GLP conditions. The melting point is referred to the onset temperature. The mean melting point is 64.8 °C.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 64.8 °C
Additional information
No atm. pressure is mentioned in the report, but 1013 hPa as standard conditions can be assumed.
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