Registration Dossier
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EC number: 436-120-9 | CAS number: 99627-05-1
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:
- 2000-06-14 to 21
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- 47.9 °C
- Atm. press.:
- 1 013.25 hPa
- Decomposition:
- no
- Sublimation:
- no
- Conclusions:
- The melting point was determined to be 47.9 °C at 1013.25 hPa.
- Executive summary:
A study was conducted according to OECD test guideline 102, Regulation (EC) No 440/2008 method A.1 and EPA OCSPP test guideline 830.7200 to determine the melting point of the test item using differential scanning calorimetry. The test item was weighed out into an aluminium crucible. Three tests with were performed. As reference crucible, an empty aluminium crucible was used. The temperature was increased at a constant heating rate. In the temperature range of 24-66 °C, a thermal effect was observed. The mean onset temperature of the three measurements was determined to be 47.9 °C. Thus, the melting point of the substance was determined to be 47.9 °C at 1013.25 hPa.
Reference
Preliminary test
The measurement in a closed glass pan shows an endothermic effect (melting) in the range 30-70 °C. No exothermal decomposition was observed up to 300 °C.
Main Test
Onset /°C |
Temperature range / °C |
Pan |
48.2 |
24-66 |
aluminium with a hole |
47.2 |
24-66 |
aluminium with a hole |
48.2 |
25-60 |
aluminium with a hole |
The mean melting point was determined to be 47.9 °C.
Description of key information
The melting point was determined to be 47.9 °C at 1013.25 hPa (reference 4.2 -1).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 47.9 °C
Additional information
A study was conducted according to OECD test guideline 102, Regulation (EC) No 440/2008 method A.1 and EPA OCSPP test guideline 830.7200 to determine the melting point of the test item using differential scanning calorimetry (reference 4.2 -1). The test item was weighed out into an aluminium crucible. Three tests with were performed. As reference crucible, an empty aluminium crucible was used. The temperature was increased at a constant heating rate. In the temperature range of 24-66 °C, a thermal effect was observed. The mean onset temperature of the three measurements was determined to be 47.9 °C. Thus, the melting point of the substance was determined to be 47.9 °C at 1013.25 hPa.
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