Registration Dossier
Registration Dossier
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EC number: 256-458-9 | CAS number: 49744-28-7
Melting point / freezing point
Administrative data
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2015
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Comparable to guideline study (EU A.1) with acceptable restrictions
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 015
- Report date:
- 2015
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Type of method:
- thermal analysis
Test material
- Reference substance name:
- 1-[(4-methoxy-2-nitrophenyl)azo]-2-naphthol
- EC Number:
- 256-458-9
- EC Name:
- 1-[(4-methoxy-2-nitrophenyl)azo]-2-naphthol
- Cas Number:
- 49744-28-7
- Molecular formula:
- C17H13N3O4
- IUPAC Name:
- 1-[(4-methoxy-2-nitrophenyl)diazenyl]-2-naphthol
- Test material form:
- solid
Constituent 1
Results and discussion
Melting / freezing point
- Melting / freezing pt.:
- >= 206 °C
- Decomposition:
- yes
- Decomp. temp.:
- >= 224 °C
Any other information on results incl. tables
There is endothermic effect (melting/boiling) at 206°C in the DSC curves.
The product starts to decompose in the sealed vial at ca. 224 °C with a mean energy of 1130 J/g .
Applicant's summary and conclusion
- Conclusions:
- The test substance melt at 206°C. Decomposition starts at 224 °C.
- Executive summary:
The thermal behaviour of the test substance was investigated by Differential Scanning Calorimetry (DSC). Decomposition starts at 224 °C.
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