Registration Dossier
Registration Dossier
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EC number: 602-927-1 | CAS number: 123312-89-0
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:
- 13 Nov 1992 to 10 Mar 1993
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Version / remarks:
- May 1981
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- September 1984
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- capillary method
- Key result
- Melting / freezing pt.:
- 217 °C
- Decomposition:
- yes
- Decomp. temp.:
- 190 °C
- Remarks on result:
- other: Around 190 °C, a colour change was noted
- Remarks:
- Atm. pressure was not reported
- Conclusions:
- The melting point of the test substance was determined to be 217.0 °C.
- Executive summary:
The study was performed to determine the melting temperature of the test substance using the capillary method according to OECD TG 102 and in compliance with GLP. The mean melting temperature of the test substance was determined to be 217 °C, with a decomposition observed around 190 °C.
Reference
Table: Results of the melting point determinations
Substance |
Starting Temp. (°C) |
Heating Rate / °C . min-1 |
Melting point (°C) |
Carbazole |
243.0 |
0.2 |
245.8 |
|
243.0 |
0.2 |
245.7 |
Average |
|
|
245.75 |
Expected |
|
|
245.3 |
|
|||
Test substance |
215.0 |
0.2 |
216.6 |
|
215.0 |
0.2 |
216.5 |
|
200.0 |
1.0 |
217.6 |
|
200.0 |
1.0 |
217.2 |
|
200.0 |
1.0 |
217.6 |
Average |
|
|
217 |
The colour change was noted to occur at around 190 °C. The accuracy of the determination could have been influenced by the decomposition.
Description of key information
217 °C, OECD 102, capillary method, Rodler 1993
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 217 °C
Additional information
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