Registration Dossier
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EC number: 269-246-6 | CAS number: 68201-95-6
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:
- November 11th, 2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with generally accepted scientific standards and described in sufficient detail
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- adopted July 27, 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Decomposition:
- yes
- Decomp. temp.:
- 235 °C
- Conclusions:
- Melting temperature of the test substance could not be determined because of thermal degradation (240 °C) of the test substance.
- Executive summary:
The melting temperature of the test substance was investigated. The Differential Scanning Calorimetry method was used. The procedures used in the study were in accordance with OECD Test Guideline No.102.
Decomposition of the test substance was observed above 240 °C, i.e. 513 K. Melting temperature of the test substance was not observed below the temperature at which decomposition started.
Conclusion
Melting temperature of the test substance could not be determined because of thermal degradation of the test substance.
Reference
First experiment: the wide endothermic peak was observed between start temperature and 200 °C, probably caused by the water evaporation. The exotermic peak was observed between 240 and 360 °C, caused by the thermal decomposition of the test substance. After the experiment the sample had lost 0.88 mg (40.2 %) of its mass and the residue had a black colour.
Second experiment: the endothermic peak was observed between start temperature and 200 °C, caused by the water evaporation. After the experiment the sample had lost 0.21 mg (8.94 %) of its mass and the consistency was not change.
Considering the declared moistr content, the endothermic peak is caused by water evaporation.
Description of key information
Decomposition before melting (235 °C)
Key value for chemical safety assessment
Additional information
Differential Scanning Calorimetry - OECD 102
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