Registration Dossier
Registration Dossier
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EC number: 208-816-0 | CAS number: 542-52-9
Melting point / freezing point
Administrative data
- 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
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
Test material
- Reference substance name:
- Dibutyl carbonate
- EC Number:
- 208-816-0
- EC Name:
- Dibutyl carbonate
- Cas Number:
- 542-52-9
- Molecular formula:
- C9H18O3
- IUPAC Name:
- dibutyl carbonate
- Test material form:
- liquid
Constituent 1
Results and discussion
Melting / freezing point
- Key result
- Melting / freezing pt.:
- -72 °C
- Atm. press.:
- 1 013.25 hPa
Any other information on results incl. tables
Results
The melting temperature of the test item was found at -72 °C onset peak temperature. (2nd heating, determination A and B)
Determination |
Onset temperature [°C] |
Peak temperature [°C] |
A |
-72.0 |
-71.4 |
B |
-72.0 |
-71.4 |
Mean value |
-72 |
-71 |
The estimated accuracy is ± 1 °C.
Observed thermal processes
In Test 1 a first survey showed that a cooling rate of 20K/min is too fast for crystallization and thus the test item crystallized only during the heating run.
To get a well crystallized test item a 15min annealing phase at -72 °C was introduced. The test item had a sharp melting peak with a negligible rounding at the beginning and therefore, the onset temperature could be taken as melting temperature.
In order to survey the thermal behavior of the test item a preliminary TG/DSC-Test (non-GLP) was run up to 600 °C.
A decreasing TG-signal, starting directly with the beginning of the measurement, with a total weight loss at 170 °C showed the vaporization of the test item.
Applicant's summary and conclusion
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Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
