Registration Dossier
Registration Dossier
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EC number: 218-664-7 | CAS number: 2212-81-9
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:
- December 2011
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Remarks:
- Well conducted study under Internal management system and according to EC and OECD guidelines, certificate of analysis included in the report.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- May 31, 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- Adopted July 27, 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: 4. ASTM E 537-07, Standard test method for the thermal stability of chemicals by Differential Scanning Calorimetry, October 1, 2007
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: 6. Calibration Method C-SR-054, Method for the calibration of the DSC822e module, November 13, 2003
- Deviations:
- no
- GLP compliance:
- no
- Remarks:
- Internal management system
- Type of method:
- thermal analysis
- Melting / freezing pt.:
- > 41.5 - < 51 °C
- Conclusions:
- The melting range of [1,3-phenylenebis(1-methylethylidene)]bis[tert-butyl] peroxide is 41.5°C to 51.0°C.
- Executive summary:
The melting range of [1,3-phenylenebis(1-methylethylidene)]bis[tert-butyl] peroxide is 41.5°C to 51.0°C.
Reference
Accuracy check
Measured values for Indium:
The measured values are within the acceptance limits.
Test substance
The measured values for the test substance are mentioned below. The last column shows the mean values. The mean values for the initial and final melting temperature are rounded to the nearest 0.5°C.
|
Test 1 |
Test 2 |
Mean |
Initial melting temperature [°C] |
41.3 |
41.7 |
41.5* |
Final melting temperature [°C] |
51.0 |
51.4 |
51.0* |
Enthalpy of melting [J/g] |
95.3 |
96.2 |
95.8 |
* mean of initial and final melting temperature is rounded to
the nearest 0.5°C
The melting range of the test substance is 41.5°C to 51.0°C.
The enthalpy of melting is 95.8 J/g.
See the DSC curves in the attached files.
Description of key information
The melting range of [1,3-phenylenebis(1-methylethylidene)]bis[tert-butyl] peroxide is 41.5°C to 51.0°C.
Key value for chemical safety assessment
Additional information
The outcome of the endpoint is supported by three publications.
This study shows that the substance is solid at room temperature.
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