Registration Dossier
Registration Dossier
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EC number: 234-386-9 | CAS number: 11137-98-7
Vapour pressure
Administrative data
- Endpoint:
- vapour pressure
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the melting point is above 300°C
- Justification for type of information:
- JUSTIFICATION FOR DATA WAIVING
In TGA tests up to 1000°C it was observed that the substance actually does not melt at all.
Therefore the substance is expected to have a very low vapour pressure, which probaly would not be experimentally determinable.
Cross-reference
- Reason / purpose for cross-reference:
- data waiving: supporting information
Reference
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- January 2018
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- TGA analysis was performed on 3 samples of the substance, up to 1000°C.
- GLP compliance:
- no
- Type of method:
- other: thermogravimetric analyses
- Key result
- Decomposition:
- ambiguous
- Decomp. temp.:
- ca. 600 °C
- Remarks on result:
- not determinable
- Conclusions:
- The substance does not melt (up to 500°C).
- Executive summary:
TGA analysis was performed on 3 batches of the substance, up to 1000°C. A dynamic rate high resolution program was used to obtain the data (Hi-Res sensitivity 1.0, Ramp 50.00°C/min, resolution 4.0).
Helium gas was used to create an inert atmosphere in all analyses.
In none of the tests a melting effect was observed. From this it is concluded that the substance does not have a melting point.
TGA curves of all 3 tested batches showed weight loss up to ca. 140 -150°C, and then an effect at approximately 600°C, which was ascribed to decomposition of residual OH and CO3 groups in the structure.
No distinct melting effect was observed, thus it is concluded that the substance has no melting temperature.
Data source
Materials and methods
Results and discussion
Applicant's summary and conclusion
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