Registration Dossier
Registration Dossier
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EC number: 201-004-7 | CAS number: 77-09-8
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:
- 07/2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- 1995
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- thermal analysis
- Remarks:
- Differential Scanning Calorimetry
- Key result
- Melting / freezing pt.:
- 263.7 °C
- Decomposition:
- no
- Sublimation:
- no
- Conclusions:
- The test item has a mean melting point of 263.7 °C.
- Executive summary:
A study was conducted in order to determine the melting point of the test item according to OECD test guideline 102 and European Commission Regulation (EC) No. 440/2008, Method A.1. Differential scanning calorimetry (DSC) measurements were performed. The test item was heated up from ambient to 300 °C and 450 °C, respectively. An endothermic effect was observed in the temperature range between 260 - 280 °C with an onset temperature of 263 - 264 °C. The mean melting point was determined to be 263.7 °C.
Reference
Two DSC-runs in aluminium crucible with a hole showed an endothermic effect (melting) in the temperature range 260 - 280 °C with an onset temperature of 263 - 264 °C. The onset temperature is derived from the intersection of the tangent line with the highest slope of the endothermic peak with baseline.
Ident-No. |
Onset / °C |
Temperature range / °C |
Crucible |
30412 |
263.31 |
260 - 280 |
Aluminium crucible with a hole |
30411 |
264.08 |
260 - 280 |
Aluminium crucible with a hole |
The test item has a mean melting point of 263.7 °C.
Description of key information
The test item has a mean melting point of 263.7 °C (reference 4.2-1).
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 263.7 °C
Additional information
A study was conducted in order to determine the melting point of the test item according to OECD test guideline 102 and European Commission Regulation (EC) No. 440/2008, Method A.1. Differential scanning calorimetry (DSC) measurements were performed. The test item was heated up from ambient to 300 °C and 450 °C, respectively. An endothermic effect was observed in the temperature range between 260 - 280 °C with an onset temperature of 263 - 264 °C. The mean melting point was determined to be 263.7 °C.
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