Registration Dossier
Registration Dossier
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EC number: 457-080-9 | CAS number: 32940-15-1
Melting point / freezing point
Administrative data
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- September 08, 2005 - September 13, 2005
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 005
- Report date:
- 2005
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- July 27, 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- December 1992
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
Test material
- Reference substance name:
- -
- EC Number:
- 457-080-9
- EC Name:
- -
- Cas Number:
- 32940-15-1
- Molecular formula:
- C11H12O2
- IUPAC Name:
- 5-methoxy-1,2,3,4-tetrahydronaphthalen-2-one
- Test material form:
- solid: compact
- Details on test material:
- - Description: White-yellowish solid
Constituent 1
Results and discussion
Melting / freezing point
- Key result
- Melting / freezing pt.:
- >= 30.7 - <= 37.6 °C
- Atm. press.:
- 97.5 kPa
Any other information on results incl. tables
Preliminary test
A first endothermic heat effect was observed between 32.7°C and 44.1 °C (melting). A second endothermic heat effect was detected starting at 303.9°C (boiling). After the experiment, the sample had lost about 94 % of its mass and the color of the sample was shiny black and molten.
Main test
- The onset point of the endothermic peak could not be determined accurately. Therefore a melting range is reported.
- First test: melting range of 30.7°C to 37.5°C
- Second test: melting range of 30.6°C to 37.7°C
- During these two tests, the samples lost 0.3 % and 0.4 % of their mass, respectively
- After the measurement both samples were yellowish and molten
- The mean melting range was calculated from the results of the two tests
Applicant's summary and conclusion
- Conclusions:
- The melting range of the substance was determined to be 30.7-37.6°C.
- Executive summary:
Differential Scanning Calorimetry (DSC) experiments were performed in a GLP study according to EC A.1 and OECD 102. A melting range instead of a well defined melting temperature was determined. The mean (n=2) melting range of the substance was determined to be 30.7-37.6°C.
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