Registration Dossier
Registration Dossier
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EC number: 921-136-5 | 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:
- 31.03.2014-02.04.2014
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- 1995
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- >= 78 - <= 79 °C
- Atm. press.:
- 1 013.25 hPa
- Decomposition:
- no
- Conclusions:
- The test item had a melting range between 78 and 79 °C under atmospheric conditions.
- Executive summary:
A study was conducted according to OECD test guideline 102 and Regulation (EC) No 440/2008 method A.1. The melting point was determined by differential scanning calorimetry (DSC). The test item and the empty reference crucible were heated up from the starting temperature (ambient) to the final temperature (250 and 500 °C) at a constant heating rate (10 K/min) in a defined atmosphere (nitrogen). Open crucibles were used as containers for the test item and as empty reference crucible. The quantity of heat absorbed or released was measured and recorded. The measurement showed an endothermal effect (melting) in the temperature range of 70 – 95 °C with an onset temperature between 77.9 and 79.1 °C. A second small endothermal effect (phase transition) was observed in the temperature range of 160 - 185 °C. The DSC measurements showed that the test item had a melting range between 78 and 79 °C under atmospheric conditions.
Reference
The DSC measurements showed an endothermal effect (melting) in the temperature range of 70 – 95 °C with an onset temperature between 77.9 and 79.1 °C. A second small endothermal effect (possibly phase transition) was observed in the temperature range of 160 - 185 °C.
Melting point (DSC measurements)
Ident No. | Onset / °C | Temperature range (melting) / °C | Crucible |
34333 | 77.96 | 70 to 95 | Aluminium with a hole |
34334 | 79.12 | 70 to 95 | Aluminium with a hole |
34335 | 77.87 | 70 to 95 | Aluminium with a hole |
34336 | 78.85 | 75 to 95 | Aluminium with a hole |
34343 | 78.89 | 70 to 95 | Aluminium with a hole |
The test item had a melting range between 77.9 and 79.1 °C.
Description of key information
The test item had a melting range between 78 and 79 °C under atmospheric conditions.
Key value for chemical safety assessment
Additional information
A study was conducted according to OECD test guideline 102 and Regulation (EC) No 440/2008 method A.1. The melting point was determined by differential scanning calorimetry (DSC). The test item and the empty reference crucible were heated up from the starting temperature (ambient) to the final temperature (250 and 500 °C) at a constant heating rate (10 K/min) in a defined atmosphere (nitrogen). Open crucibles were used as containers for the test item and as empty reference crucible. The quantity of heat absorbed or released was measured and recorded. The measurement showed an endothermal effect (melting) in the temperature range of 70 – 95 °C with an onset temperature between 77.9 and 79.1 °C. A second small endothermal effect (phase transition) was observed in the temperature range of 160 - 185 °C. The DSC measurements showed that the test item had a melting range between 78 and 79 °C under atmospheric conditions.
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