Registration Dossier
Registration Dossier
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EC number: 680-341-5 | CAS number: 41438-38-4
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:
- From July 05, 2010 to July 29, 2011
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- Study conducted in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results. The study report was conclusive, done to a valid guideline and the study was conducted under GLP conditions.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- thermal analysis
- Melting / freezing pt.:
- 29.5 °C
- Conclusions:
- The melting point of the test item was determined to be 29.5 °C, which is equal to 302.7 K. The estimated accuracy is ± 0.5 K.
- Executive summary:
The melting point of the test item was determined to be 29.5 °C, which is equal to 302.7 K. The estimated accuracy is ± 0.5 K. This result was obtained using Differential Scanning Calorimetry (Thermal Analysis) method.
Reference
Results and Discussions
Preliminary Test
The DSC-curve of the preliminary test (heating rate of 20 °C/min from 25 °C to 400 °C) is shown in Figure 1. Several endothermic heat effects were observed, the first peak starting at 32.6 °C. After the experiment, the sample had lost about 99.78% of its mass no residue remained in the sample cup.
Main Tests
In order to determine the melting more precisely, further DSC-runs were recorded between 25 °C and 70 °C with a heating rate of 5 °C/min. In the first main test run, the melting was observed at 29.7 °C, during the second main test run at 29.3 °C. During these runs, the samples lost no weight and a colorless melt remained in the sample cup.
Description of key information
The melting point of the test item was determined to be 29.5 °C, which is equal to 302.7 K. The estimated accuracy is ± 0.5 K. This result was obtained using Differential Scanning Calorimetry (Thermal Analysis) method.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 29.5 °C
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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