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EC number: 931-596-9 | CAS number: 1335203-30-9
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:
- From October 2009 to February 2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- capillary method
- Key result
- Melting / freezing pt.:
- 321.72 K
- Atm. press.:
- 102.1 kPa
- Sublimation:
- no
- Remarks on result:
- other: S.D. = ± 0.21
- Conclusions:
- The average value of the melting point of the test substance was determined to be 321.72 ± 0.21 K under atmospheric pressure of 102.1 kPa.
- Executive summary:
A study was conducted to determine the melting point of the test substance according to EU Method A.1. using a capillary tube in a heated metal block. A dried finely ground sample was placed in a capillary tube. The measurements were performed in three parallel tubes using BŐCHI Melting Point 545 apparatus. The measurements were performed in the temperature range of 311.15 K – 326.15 K with a temperature gradient of 0.5 K/min. Initially, the temperature was increased at a rate of 3 K/min. The average value of the melting point was determined to be 321.72 ± 0.21 K under atmospheric pressure (102.1 kPa) (Olszewska, 2010).
Reference
Sample |
Initial value ofmelting point, K |
Final value of melting point, K |
The difference between the initial and the final value of melting point (absolute value), K |
Atmospheric pressure, kPa |
1 |
321.85 |
321.95 |
|0.1| |
102.1 |
2 |
321.45 |
321.65 |
|0.2| |
102.1 |
3 |
321.25 |
321.55 |
|0.3| |
102.1 |
Average values ± standard deviation, K |
321.52 ± 0.31 |
321.72 ± 0.21 |
102.1 |
Description of key information
The melting point was determined according to EU Method A.1 (Olszewska, 2010).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 48.57 °C
Additional information
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