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EC number: 266-840-7 | CAS number: 67656-24-0
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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- GLP compliance:
- not specified
- Type of method:
- capillary method
- Key result
- Melting / freezing pt.:
- 126.4 °C
- Atm. press.:
- ca. 1 013 hPa
- Decomposition:
- yes
- Decomp. temp.:
- >= 158 °C
- Remarks on result:
- other: Atmospheric pressure not reported. Based on capillary method, ca. 1013 hPa can be assumed.
Reference
Measurements
Experiment number |
1 |
2 |
Stage B temperature / °C |
126.2 |
126.6 |
Average / °C |
126.4 |
|
Decomposition
In both measurements, colour changes were observed from 158 °C. The sample turned from yellowish to dark brown.
The decomposition was not spontaneous and extended over a larger temperature range. No further decomposition was observed after the sample was removed from the apparatus at the beginning of decomposition.
Description of key information
Melting point: 126.4 °C at ca. 1013 hPa (OECD Guideline 102, capillary method)
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 126.4 °C
Additional information
Decomposition was observed starting at temperature ≥ 158 °C
Atmospheric pressure not reported. Based on capillary method, ca. 1013 hPa can be assumed.
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