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EC number: 201-346-7 | CAS number: 81-39-0
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- Differential Scanning Calorimetry
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Melting / freezing pt.:
- 276.4 °C
- Atm. press.:
- ca. 1 Bar
- Remarks on result:
- other:
- Conclusions:
- The melting temperature of Macrolex Rot 5B is 276.4°C
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 2000
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods with acceptable restrictions
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- GLP compliance:
- no
- Other quality assurance:
- ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
- Type of method:
- differential scanning calorimetry
- Specific details on test material used for the study:
- The sample was dried before analysis.
- Melting / freezing pt.:
- ca. 260 °C
- Atm. press.:
- ca. 1 atm
- Decomposition:
- yes
- Decomp. temp.:
- >= 360 °C
- Executive summary:
The melting point was determined using DSC to be about 260°C.
Referenceopen allclose all
Analysis was performed in triplicate:
| No. | sample mass (mg) | Melting temperature (°C) |
| 1 | 7.2 | 276.3 |
| 2 | 7.4 | 276.3 |
| 3 | 8.0 | 276.6 |
| mean | 276.4 |
Description of key information
The melting point of Macrolex Rot 5B is 276.4°C
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 276.4 °C
Additional information
In a supporting study with dried material a melting point of about 260°C was reported and that the substance decomposes at temperatures >360°C.
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