Registration Dossier
Registration Dossier
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EC number: 279-255-7 | CAS number: 79770-29-9
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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Principles of method if other than guideline:
- The melting temperature was measured by Differential
Scanning Calorimetry. - GLP compliance:
- yes (incl. QA statement)
- Type of method:
- thermal analysis
- Decomposition:
- yes
- Decomp. temp.:
- > 250 °C
- Endpoint:
- melting point/freezing point
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Justification for type of information:
- The analogue approach is appropriate for fulfilling the data requirement as the source and target substances consist of the same chromophore with the only difference being the salt form. Please see section 13 for attached justification document.
- Reason / purpose for cross-reference:
- read-across source
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- > 250 °C
- Remarks on result:
- other: No melting point found below 400 °C. No melting point was found between -50°C and decomposition.
- Conclusions:
- The test material CAS 28706-25-4 decomposed at temperatures >250 degrees celsius.
- Executive summary:
The test material CAS 28706-25-4 decomposed at temperatures >250 degrees celsius. This result is considered as the key study for this endpoint as the chromophore is identical in both substances with the only difference being the salt form.
Referenceopen allclose all
No melting point found below 400 °C. No melting point was found between -50°C and decomposition
of the test item. The test item is solid at room temperature.
Observed thermic processes:
A broad endothermic peak was observed between about 100°C
and 200°C. This can be interpreted as a loss of volatile
components. After the run the test item was visual unchanged.
To survey the thermic behaviour of the test item the
measurement was run up to 400°C. Exothermic decomposition
was observed at about 250°C. After the run the test
item was not melted.
Description of key information
Decomposition occurs and therefore a melting point is not determined.
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.
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.
