Registration Dossier
Registration Dossier
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EC number: 640-454-2 | CAS number: 17318-08-0
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
- 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:
- Version July 1995
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- 22.2 °C
- Atm. press.:
- 103 kPa
- Decomposition:
- no
- Sublimation:
- no
- Conclusions:
- The melting temperature of the substance was determined by differential scanning calorimetry to be 22.2 °C at atmospheric pressure.
- Executive summary:
A study was performed under GLP in accordance with OECD TG 102 to evaluate the melting temperature of the test item by differential scanning calorimetry. The temperature accuracy of the DSC was checked prior to testing with zinc and indium, showing that the equipment worked within the defined tolerances. Aliquots of about 5 mg were placed in aluminium crucibles with manually pierced lids, and the thermograms were measured by DSC. The mean melting temperature of the test item was 22.2 °C (295.3 K), at 103.0 kPa. A standard deviation of 0.02 °C was obtained from the four replicate determinations performed, resulting in a percentage relative standard deviation of 0.11%. Essentially identical thermograms were observed in both air and a nitrogen atmosphere.
Reference
Description of key information
The melting point has been determined reliably by differential scanning calorimetry under GLP in a study according to OECD TG 102.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 22.2 °C
Additional information
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