Registration Dossier
Registration Dossier
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EC number: 290-904-3 | CAS number: 90268-98-7
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:
- 23 March - 05 April, 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- July 27, 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- 31 May 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Version / remarks:
- March 1998
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- > 500 °C
- Remarks on result:
- other:
- Remarks:
- Decomposition and sublimation were not observed
- Conclusions:
- The test was carried out at normal atmospheric pressure. Using a linear heating rate melting point was not observed from room temperature up to 500 °C
- Executive summary:
For the determination of the melting point or melting range, differential scanning calorimetry method was used. A small amount of the test item was inserted into the furnace of the device and the melting point was determined based on measuring the heat flow while raising the temperature. The heat flow in and out of a sample and a reference sample was measured as a function of temperature as the sample was heated. When the sample undergoes a phase transition, the corresponding change of enthalpy gives a departure from the base line of the heat flow record. The difference in energy input necessary to maintainidenticaltemperatures between the substance and the reference sample is recorded. The measurement signal is the energy absorbed by or released by the sample. The test was carried out at normal atmospheric pressure. Using a linear heating rate melting point was not observed from room temperature up to 500 °C
Reference
After the experiments the test item was cohered in the crucible and its color darkened.
The endotherm and exotherm peaks in the thermogramsdo not implyphase transition from a solid to liquid state. Using a linear heating rate melting point was not observed from room temperature up to 500 °C.
Description of key information
The test was carried out at normal atmospheric pressure. Using a linear heating rate melting point was not observed from room temperature up to 500 °C
Key value for chemical safety assessment
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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