Registration Dossier
Registration Dossier
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EC number: - | CAS number: -
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:
- 2021-07-12 - 2021-07-13
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- thermal analysis
- Key result
- Melting / freezing pt.:
- > 160 °C
- Atm. press.:
- 1 013 hPa
- Decomposition:
- yes
- Decomp. temp.:
- > 160 - < 320
- Conclusions:
- The DSC-measurements showed a first exothermic effect in the temperature range of 160-300 °C with an average energy release of -190 J/g. A second exothermic effect is detected in the temperature range of 320 - 480 °C with an average energy release of -250 J/g.
The test item was black after the DSC-measurement. Therefore, it can be concluded that the test substance decomposes before melting. - Executive summary:
In this test, the thermal stability of the test item was investigated by Differential Scanning Calorimetry (DSC). With this method the difference in energy input into the test item and a reference material as a function of the temperature is recorded, while the substance and reference material are subjected to the same temperature program. This energy is the energy necessary to establish zero temperature difference between the substance and the reference material. When the sample undergoes a transition involving a change of enthalpy, that change is indicated by an endothermic deviation (e.g. melting, boiling) from the base line of the heat flow record.
The DSC-measurements showed a first exothermic effect in the temperature range of 160-300 °C with an average energy release of -190 J/g. A second exothermic effect is detected in the temperature range of 320 - 480 °C with an average energy release of -250 J/g.
The test item was black after the DSC-measurement.
Reference
Description of key information
The test substance decomposes before melting.
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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