Registration Dossier
Registration Dossier
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EC number: 608-727-0 | CAS number: 323178-01-4
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:
- 11.12.2013
- 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:
- 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- 2008
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- 77.6 °C
- Atm. press.:
- 1 013 hPa
- Decomposition:
- no
- Sublimation:
- no
- Conclusions:
- The test item had a melting point of 77.6 °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 (500 °C) at a constant heating rate (1 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 75 – 95 °C with an onset temperature between 77.6 and 77.7 °C. A second small endothermal effect (phase transition) was observed in the temperature range of 140 - 150 °C. The DSC measurements showed that the test item had a melting point of 77.6 °C under atmospheric conditions.
Reference
The DSC measurements showed an endothermal effect (melting) in the temperature range of 75 – 95 °C with an onset temperature between 77.6 and 77.7 °C. A second small endothermal effect (phase transition) was observed in the temperature range of 140 - 150 °C..
Melting point (DSC measurements)
Ident No. | Onset / °C | Temperature range (melting) / °C | Crucible |
34149 | 77.62 | 75 to 95 | Aluminium with a hole |
34151 | 77.58 | 75 to 90 | Aluminium with a hole |
34153 | 77.70 | 75 to 90 | Aluminium with a hole |
34155 | 77.59 | 75 to 95 | Aluminium with a hole |
The test item had a melting point of 77.6 °C.
Description of key information
The test item had a melting point of 77.6 °C under atmospheric conditions.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 77.6 °C
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 (500 °C) at a constant heating rate (1 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 75 – 95 °C with an onset temperature between 77.6 and 77.7 °C. A second small endothermal effect (phase transition) was observed in the temperature range of 140 - 150 °C. The DSC measurements showed that the test item had a melting point of 77.6 °C under atmospheric conditions.
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