Registration Dossier
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EC number: 603-923-2 | CAS number: 135590-91-9
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:
- 15.07.2011
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Hess. Ministerium für Umwelt, Energie, Landwirtschaft und Verbraucherschutz, Mainzer Straße 80, D65189 Wiesbaden
- Type of method:
- differential scanning calorimetry
- Melting / freezing pt.:
- 49.35 °C
- Atm. press.:
- ca. 1 013 hPa
- Remarks on result:
- other: No data about pressure, decomposition, sublimation
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 12.07.2011 - 14.07.2011
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Hess. Ministerium für Umwelt, Energie, Landwirtschaft und Verbraucherschutz, Mainzer Straße 80, D65189 Wiesbaden
- Type of method:
- differential scanning calorimetry
- Melting / freezing pt.:
- -22.3 °C
- Atm. press.:
- ca. 1 013 hPa
- Remarks on result:
- other: No data about pressure, decomposition, sublimation
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 11.10.1994
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Remarks:
- Basic data given
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Differential thermal analysis
- GLP compliance:
- no
- Type of method:
- thermal analysis
- Remarks:
- differential
- Melting / freezing pt.:
- >= 316 - <= 320 K
- Remarks on result:
- other: No data about pressure, decomposition, sublimation
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 30.01.1992
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Remarks:
- Basic data given
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Differential thermal analysis
- GLP compliance:
- no
- Type of method:
- thermal analysis
- Remarks:
- differential
- Melting / freezing pt.:
- >= 323 - <= 325 K
- Remarks on result:
- other: no data about pressure, decomposition, sublimation
Referenceopen allclose all
The measurements in aluminium crucibles with a hole showed an endothermic effect the in the temperature range 45 to 63 °(melting) with an onset temperature of 49 °C. The onset temperature was derived from the intersection of the tangent line with the highest slope of the endothermic peak with the baseline.
Ident.-No. |
Onset / °C |
Temperature range / °C |
Crucible |
31 936 |
49.19 |
45 to 63 |
Aluminium with a hole |
31 938 |
49.51 |
45 to 63 |
Aluminium with a hole |
The test item had a mean melting point of 49.35 °C.
The measurements in aluminium crucibles with a hole showed an endothermic effect in the temperature range of -28 to -2 °C and -28 to -10 °C respectively (melting) with an onset temperature of -22 °C. The onset temperature was derived from the intersection of the tangent line with the highest slope of the endothermic peak with the baseline.
Ident.-No. |
Onset / °C |
Temperature range / °C |
Crucible |
31 931 |
- 22.49 |
-22 to -2 |
Aluminium with a hole |
31 932 |
- 22.20 |
-28 to -10 |
Aluminium with a hole |
The test item had a mean melting point of - 22.3 °C.
Description of key information
Pure substance: 49 °C at ca. 1013 hPa (Differential thermal analysis)
Technical grade: -22 °C at ca. 1013 hPa (Differential thermal analysis)
Key value for chemical safety assessment
Additional information
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