Registration Dossier
Registration Dossier
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EC number: 606-278-5 | CAS number: 19257-34-2
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:
- 2000
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- thermal analysis
- Key result
- Melting / freezing pt.:
- 115.2 °C
- Remarks on result:
- other: No pressure is reported.
- Conclusions:
- The melting point of the substance was measured at 115.2 °C with the DTA method, no pressure was reported.
- Executive summary:
The melting point of the substance was determined according to the EU guideline A.1 using the DTA method, three scans at a heating rate of 5 K/min in the temperature range from room temperature to 350 °C (623K) were performed in closed stainless steel capsules under air presence. One endothermic peak with an average onset temperature of 115.2 °C was detected. This peak can be interpreted as a melting phenomenon.
In order to confirm the melting point determined by the DTA method, an experiment was performed using the hot stage microscope in the temperature range of room temperature to approx. 170 °C at heating rates of 10 K/min up to 90 °C and 2 K/min above 90 °C.
Up to 90 °C no changes were observed. Melting starts at 113 °C, the melt was clear at 117 °C. Up to 170°C no visually detectable changes of the melted sample.
Reference
In order to confirm the melting point determined by the DTA method, an experiment was performed using the hot stage microscope in the temperature range of room temperature to approx. 170 °C at heating rates of 10 K/min up to 90 °C and 2 K/min above 90 °C.
Up to 90 °C no changes were observed. Melting starts at 113 °C, the melt was clear at 117 °C. Up to 170°C no visually detectable changes of the melted sample.
Description of key information
The melting point of the substance was measured at 115.2 °C and no pressure is reported.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 115.2 °C
Additional information
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