Registration Dossier
Registration Dossier
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EC number: 603-006-7 | CAS number: 124728-62-7
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:
- 16.09.2010
- 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:
- yes
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- 71 °C
- Atm. press.:
- 1 013.3 hPa
- Decomposition:
- no
- Sublimation:
- no
- Conclusions:
- The test item had a melting point of 71 °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 (600 °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 onset of the first endothermal signal was measured at 70.8 °C. After the measurement the test item was melted. The DSC measurements showed that the test item had a melting point of 71 °C under atmospheric conditions.
Reference
The thermogram showed an endothermic signal in the temperature range of about 65 to 85 °C. This signal is referred to as melting pint. Two other endothermal signals with low enthalpy were measured in the temperature range 108 to 122 °C and 164 to 182 °C. The onset of the first endothermal signal was measured at 70.8 °C. After the measurement the test item was melted. The test item has a melting point of 71 °C.
Description of key information
The test item had a melting point of 71 °C under atmospheric conditions.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 71 °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 (600 °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 onset of the first endothermal signal was measured at 70.8 °C. After the measurement the test item was melted. The DSC measurements showed that the test item had a melting point of 71 °C under atmospheric conditions.
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