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EC number: - | 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:
- From 2020-12-21 to 2021-01-07
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- July 27, 1995
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Specific details on test material used for the study:
- Batch No.: 465884
Purity: 100% - Key result
- Melting / freezing pt.:
- 125.6 °C
- Atm. press.:
- 1 013.25 hPa
- Decomposition:
- yes
- Decomp. temp.:
- > 200 °C
- Conclusions:
- The melting temperature of the test item was 125.6℃ (398.7K).
- Executive summary:
The melting temperature of test item were determined by DSC according to OECD 102.
The melting temperature of the test item was 125.6℃ (398.7K).
Reference
- Preliminary Test:
Starting at 225℃, the weight of the sample decreased significantly. At 335℃, the sample weight had decreased by 25%.
After the experiment, a black molten residue remained in the sample container (original colour: white to off-white to slightly yellow). The change of the colour indicated reaction and/or decomposition of the test item.
- Main Study:
In Experiment 1, an endothermic effect was observed between 100℃ and 150℃ followed by an endothermic and exothermic effect starting at 200℃. The extrapolated onset temperature of the first endothermic effect was 125.542℃. The endothermic effect was most likely obtained due to melting of the test item. The second endothermic and exothermic effect were due to reaction and/or decomposition of the test item.
After the experiment, a red/brown molten residue remained in the sample container (original colour: white to off-white to slightly yellow). Based on this visual observation, it was found that the test item had molten and the change of the colour demonstrated reaction and/or decomposition of the test item.
In order to investigate the endothermic effect, Experiment 2 was stopped directly after the melting effect. The extrapolated onset temperature was 125.605℃. After the experiment, a colourless molten residue remained in the sample container (original colour: white to off-white to slightly yellow). It demonstrated that melting was the reason for the endothermic effect.
The melting temperature was determined as the mean melting temperature of Experiment 1 (125.542℃) and Experiment 2 (125.605℃).
Description of key information
The melting temperature of test item were determined by DSC according to OECD 102.
The melting temperature of the test item was 125.6℃ (398.7K).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 125.6 °C
Additional information
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