Registration Dossier
Registration Dossier
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EC number: 947-251-0 | CAS number: -
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:
- 21 August 2017 to 22 November 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- capillary method
- Key result
- Decomposition:
- yes
- Decomp. temp.:
- 333 °C
- Remarks on result:
- other:
- Conclusions:
- Under the conditions of this study, the test material showed no definite stages of melting during the 1K/minute temperature rise, and instead appeared to decompose starting at ~333°C.
- Executive summary:
The melting point of the test material was investigated in accordance with the standardised guideline OECD 102, under GLP conditions.
The melting point was determined in duplicate using digital melting point apparatus. The test material was placed into a capillary tube for analysis. Phenanthrene was used as the reference material with known melting point to verify the procedure.
Initially at ~330°C the sample was light brown in colour, at ~333°C the bottom if the sample turned a darker brown and at ~344°C the sample turned dark brown in colour and no further physical changes were observed in the sample.
Under the conditions of this study, the test material showed no definite stages of melting during the 1K/minute temperature rise, and instead appeared to decompose starting at ~333°C.
Reference
- The Test Material showed no definite stages of melting during the 1K/minute temperature rise, and instead appeared to decompose starting at ~333°C. Therefore, no melting point determination was made for the test material.
The following is a summary of the sample behaviour observed in both replicates during testing:
- Initially at ~330°C the sample was light brown in colour
- At ~333°C the bottom if the sample turned a darker brown.
- At ~344°C the sample turned dark brown in colour and no further physical changes were observed in the sample.
Description of key information
Under the conditions of this study, the test material showed no definite stages of melting during the 1K/minute temperature rise, and instead appeared to decompose starting at ~333°C.
Key value for chemical safety assessment
Additional information
The melting point of the test material was investigated in accordance with the standardised guideline OECD 102, under GLP conditions. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).
The melting point was determined in duplicate using digital melting point apparatus. The test material was placed into a capillary tube for analysis. Phenanthrene was used as the reference material with known melting point to verify the procedure.
Initially at ~330 °C the sample was light brown in colour, at ~333°C the bottom if the sample turned a darker brown and at ~344°C the sample turned dark brown in colour and no further physical changes were observed in the sample.
Under the conditions of this study, the test material showed no definite stages of melting during the 1K/minute temperature rise, and instead appeared to decompose starting at ~333°C.
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