Registration Dossier
Registration Dossier
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EC number: 241-443-1 | CAS number: 17418-59-6
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:
- 06 May 2021
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Version / remarks:
- 1998
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- 2008
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- >= 200.5 - <= 205.5 °C
- Remarks on result:
- other: no information on atm. pressure reported
- Conclusions:
- Under the conditions of the test, using a linear heating rate of 10 °C/min the melting point of the test material was determined to be in the range of 200.5 – 205.5 °C (473.6 – 478.6 K).
- Executive summary:
The melting point of the test material was in accordance with EU Test Method A.1, OECD guideline 102, and EPA OPPTS 830.7200, and in compliance with GLP, using the differential scanning calorimetry method.
A small amount of test material was weighed into a one-way 40 μL aluminum crucible and sealed with perforated aluminum lid using a capsule presser. Thus prepared capsule was inserted into the furnace of the DSC device and heated from 25 °C to 500 °C with 10 °C/minutes heating rate. As reference sample an empty crucible of the same type was used. The heat flow and any thermal events were recorded, as well as the onset and the related energy. The measurement was performed under nitrogen atmosphere. Before and after the test, the weight and the appearance of the sample were determined. This experiment was performed in duplicate.
Under the conditions of the test, using a linear heating rate of 10 °C/min the melting point of the test material was determined to be in the range of 200.5 – 205.5 °C (473.6 – 478.6 K).
Reference
Appearance of the samples
Before the test the appearance of the test material was red powder. After the experiments the test material became a black melt in the crucible.
Melting point of test material
| Experiment 1 | Experiment 2 | Mean | |
| Onset of effect [°C] | 200.02 | 200.96 | 200.49 |
| Endset of effect [°C] | 205.24 | 205.73 | 205.49 |
Using a linear heating rate of 10 °C/min the melting point of the test material was determined to be in the range of 200.5 – 205.5 °C (473.6 – 478.6 K).
Description of key information
The melting point of the test material was determined to be in the range of 200.5 – 205.5 °C (473.6 – 478.6 K).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 200.5 °C
Additional information
The melting point of the test material was in accordance with EU Test Method A.1 and OECD guideline 102, and EPA OPPTS 830.7200, and in compliance with GLP, using the differential scanning calorimetry method. The study was assigned a reliability score of 1 in accordance with the criteria set forth by Klimisch (1997).
During the test, a small amount of test material was weighed into a one-way 40 μL aluminum crucible and sealed with perforated aluminum lid using a capsule presser. Thus prepared capsule was inserted into the furnace of the DSC device and heated from 25 °C to 500 °C with 10 °C/minutes heating rate. As reference sample an empty crucible of the same type was used. The heat flow and any thermal events were recorded, as well as the onset and the related energy. The measurement was performed under nitrogen atmosphere. Before and after the test, the weight and the appearance of the sample were determined. This experiment was performed in duplicate.
Under the conditions of the test, using a linear heating rate of 10 °C/min the melting point of the test material was determined to be in the range of 200.5 – 205.5 °C (473.6 – 478.6 K).
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