Registration Dossier
Registration Dossier
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EC number: 240-185-7 | CAS number: 16044-24-9
Melting point / freezing point
Administrative data
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 2005
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 005
- Report date:
- 2005
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Principles of method if other than guideline:
- Differential Thermal Analysis (DTA) according to VDI 2263, Part 1.
- GLP compliance:
- no
- Type of method:
- thermal analysis
Test material
- Reference substance name:
- Methanaminium, N-[4-[[4-(dimethylamino)phenyl]phenylmethylene]-2,5-cyclohexadien-1-ylidene]-N-methyl-, ethanedioate
- EC Number:
- 241-922-5
- EC Name:
- Methanaminium, N-[4-[[4-(dimethylamino)phenyl]phenylmethylene]-2,5-cyclohexadien-1-ylidene]-N-methyl-, ethanedioate
- Cas Number:
- 18015-76-4
- Molecular formula:
- C25H26N2O4
- IUPAC Name:
- Methanaminium, N-[4-[[4-(dimethylamino)phenyl]phenylmethylene]-2,5-cyclohexadien-1-ylidene]-N-methyl-, ethanedioate
- Test material form:
- solid
- Details on test material:
- Basic Green 4 oxalate
Constituent 1
Results and discussion
Melting / freezing point
- Melting / freezing pt.:
- ca. 145 °C
- Decomposition:
- yes
- Decomp. temp.:
- ca. 153 °C
Any other information on results incl. tables
An exothermic reaction with a heat release of about -95 J/g was found (onset: 153 °C). Directly before and after this exothermic reaction endothermic reactions were detected.
Between ca 170 - 172 and ca 210 °C there is another endothermic reaction (about 130 mW/g).
Addition of steel (V4A) did not cause any significant changes in the thermal behavior.
Applicant's summary and conclusion
- Conclusions:
- Melting point at 145 °C; at 153 °C substance decomposes.
- Executive summary:
DTA test: the sample is heated in a closed glass container at a linear rate of 3 K/min. The temperature difference between sample and reference (Al2O3) is measured as a function of temperature. The measurement is recorded electronically.
An exothermic reaction with a heat release of about -95 J/g was found (onset: 153 °C). Directly before and after this exothermic reaction endothermic reactions were detected.
Between ca 170 - 172 and ca 210 °C there is another endothermic reaction (about 130 mW/g).
Addition of steel (V4A) did not cause any significant changes in the thermal behavior.
Conclusion
Melting point at 145 °C; at 153 °C substance decomposes.
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