Registration Dossier
Registration Dossier
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EC number: 603-401-4 | CAS number: 1302-88-1
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
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study was conducted to an OECD equivalent guideline in an EU-based analytical laboratory. Sufficient detail was provided on the methodology and the results of the study.
- Reason / purpose for cross-reference:
- reference to other study
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- not applicable
- Principles of method if other than guideline:
- Differential Scanning Calorimetry
- GLP compliance:
- no
- Type of method:
- thermal analysis
- Melting / freezing pt.:
- 1 460 °C
- Remarks on result:
- other: No pressure data was provided
- Conclusions:
- The melting point was found to be 1,460°C.
- Executive summary:
The melting point of the substance was determined using DSC in a method equivalent to OECD test guideline 102. The melting point was found to be 1,460°C.
Reference
The literature value for the melting point of cordierite varies the Concise Encyclopaedia of Advanced Ceramic Materials (Ed. R.J. Brook, Elsevier 2012 – see Google Books) states it is approximately 1460°C and that it melts incongruently to mullite and a liquid phase. It goes on to say that at temperatures close to melting point a number of solid solutions form and that a phase change occurs.
The onset around 1375°C could be due to phase changes in the sample with the onset at 1460°C due to the melting of the sample.
Description of key information
The melting point was found to be 1,460°C.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 1 460 °C
Additional information
The melting point of the substance was determined using DSC in a method equivalent to OECD test guideline 102. The melting point was found to be 1,460°C.
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