Registration Dossier
Registration Dossier
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EC number: 200-372-6 | CAS number: 58-27-5
Melting point / freezing point
Administrative data
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Experimental starting date: 05 July 2017. Experimental completion date: 23 August 2017
- 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 guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
Test material
- Reference substance name:
- Menadione
- EC Number:
- 200-372-6
- EC Name:
- Menadione
- Cas Number:
- 58-27-5
- Molecular formula:
- C11H8O2
- IUPAC Name:
- 2-methyl-1,4-dihydronaphthalene-1,4-dione
Constituent 1
- Specific details on test material used for the study:
- Identification: Beta-Menadione
CAS No: 58-27-5
Description: light yellow powder
Batch number: J16090701
Purity: 99.2%
Expiry date: 06 September 2017
Storage conditions: room temperature, in the dark
Results and discussion
Melting / freezing point
- Melting / freezing pt.:
- >= 103 - <= 105 °C
- Atm. press.:
- 1 atm
- Decomposition:
- no
- Sublimation:
- no
Any other information on results incl. tables
Thermographic Data
| Thermal Event | Interpretation | Temperature (°C) | |
| Determination 1 | Determination 2 | ||
| Endotherm | Onset of melting | 104 | 104 |
| Extrapolated onset of melting | 107 | 107 | |
Mean melting temperature: 104 ± 1 °C (377 ± 1 K)
As the melting endotherm was relatively broad, the onset temperature was taken as the melting temperature.
Applicant's summary and conclusion
- Conclusions:
- The melting point of the test item has been determined to be 104 ± 1 °C (377 ± 1 K).
- Executive summary:
Melting/Freezing Point. 104 ± 1 °C (377 ± 1 K), by differential scanning calorimetry, designed to be compatible with Method A.1 Melting/Freezing Temperature of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 102 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.
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