Registration Dossier
Registration Dossier
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EC number: 210-043-9 | CAS number: 603-48-5
Boiling point
Administrative data
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 017
- Report date:
- 2017
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling Point)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- other: Mel-Temp II apparatus
Test material
- Reference substance name:
- N,N,N',N',N'',N''-hexamethyl-4,4',4''-methylidynetrianiline
- EC Number:
- 210-043-9
- EC Name:
- N,N,N',N',N'',N''-hexamethyl-4,4',4''-methylidynetrianiline
- Cas Number:
- 603-48-5
- Molecular formula:
- C25H31N3
- IUPAC Name:
- 4-{bis[4-(dimethylamino)phenyl]methyl}-N,N-dimethylaniline
- Test material form:
- solid: particulate/powder
- Details on test material:
- - Purity: 99.4%
Constituent 1
Results and discussion
Boiling point
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- 227.8 °C
Any other information on results incl. tables
The melting point of benzoic acid standard for performance verification was 121.9°C, within the acceptable range of 121-123°C. Using the Mel-Temp II, the test substance melted into a translucent pale yellow liquid at 174.9°C (448.1 K). After increasing the temperature, the liquid became black in colour and no longer translucent at 227.8°C (501.0 K), indicating decomposition prior to reaching the boiling point.
Applicant's summary and conclusion
- Conclusions:
- The boiling point of the test substance was determined to be greater than the decomposition point of 227.8°C.
- Executive summary:
The boiling point of the test substance was determined in accordance with OECD Test Guideline 103). In a preliminary test, it was observed that the test substance decomposed prior to boiling; therefore, the melting point was determined on a Mel-Temp II apparatus and the decomposition temperature was recorded. The Mel-Temp II apparatus was verified for melting point by determining the melting point of the verification reagent, benzoic acid. The results were compared to the known melting point of benzoic acid. The results of the verification were within the reported melting point of benzoic acid, indicating the system was operating under acceptable conditions. Approximately 0.1 g of the test substance was homogenized using a mortar and pestle until a fine powder was obtained. The test material was then added to a melting point capillary tube to a level of 4-6 mm and tapped to the bottom of the tubes. The Mel-Temp II apparatus was set at a power level of 7 (heat increase of about 5 to 6°C per minute), and the temperature at which the test material melted and decomposed was visually observed and recorded.
The boiling point of the test substance was determined to be greater than the decomposition point of 227.8°C.
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