Registration Dossier
Registration Dossier
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EC number: 428-040-8 | CAS number: 138261-41-3
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:
- 11-18 Sep 2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Hessisches Ministerium für Umwelt, Energie, Jugend, Familie und Gesundheit, Wiesbaden, Germany
- Type of method:
- differential scanning calorimetry
- Melting / freezing pt.:
- 142.6 °C
- Atm. press.:
- ca. 1 013.3 hPa
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- May 1993
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- GLP compliance:
- yes
- Type of method:
- other:
- Remarks:
- melt microscope
- Melting / freezing pt.:
- 144 °C
- Atm. press.:
- ca. 1 013.3 hPa
Referenceopen allclose all
Three DSC measurements in aluminium crucibles with a hole were performed up to final test temperatures of 500 °C, 400 °C, and 200 °C, respectively. An endothermal effect (melting) was found in the temperature range of 125-160 °C. The onset temperatures were derived from the intersection of the tangent line with the highest slope of the endothermal peak with the baseline. The results are summarized in the table below.
Sample Id. |
Test item (mg) |
Measurement range (°C) |
Temperature range (melting)(°C) |
Onset (°C) |
Observation |
35250 |
9.88 |
30-500 |
125-160 |
142.9 |
Black residue |
35254 |
8.35 |
30-400 |
130-155 |
142.2 |
Black residue |
35255 |
7.87 |
30-200 |
125-160 |
142.6 |
Colourless clear melt |
Melting at 144 °C, after quenching and recrystallization again
melting at 144 °C.
Description of key information
142.6 °C at ca. 1013.3 hPa (OECD 102, EU A.2)
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 142.6 °C
Additional information
The melting point of the substance was determined using differential scanning calorimetry (DSC). In an earlier DSC experiment (OECD 102, EU A.2) a similar melting point value of 144 °C was obtained.
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