Registration Dossier
Registration Dossier
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EC number: 911-915-8 | CAS number: -
Melting point / freezing point
Administrative data
Link to relevant study record(s)
Description of key information
The melting point of Olaflur was evaluated to be 12.7 °C i.e. 285.85 K, the freezing point to be 9.3 °C i.e. 282.45, respectively, using differential thermal analysis.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 12.7 °C
Additional information
The melting point was determined by differential thermal analysis. Samples of the test item and of a reference material are subjected to the same controlled temperature programme. When the test substance undergoes a phase-transition, the corresponding change of enthalpy gives an endothermic (melting) or exothermic (freezing) departure from the base line of the temperature record. During the cooling phase only one exothermal event was measured. The temperature of the peak was 9.3 °C (282.45 K) and the freezing enthalpy was - 23.8 kJ/kg. During the heating phase only one endothermal signal was measured with a peak temperature of 16.1 °C. The melting enthalpy was 24.1 kJ/kg. This means that the freezing process is reversible. The melting point of the test item is therefore the average temperature and is of 12.7 °C (285.85 K).
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