Registration Dossier
Registration Dossier
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EC number: 482-110-2 | 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:
- April 1 - 2, 2003
- 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
- Remarks:
- OECD GLP
- Type of method:
- capillary method
- Key result
- Melting / freezing pt.:
- >= 131 - <= 136 °C
- Decomposition:
- no
- Sublimation:
- no
- Conclusions:
- Under the conditions of this study the melting point of the test material was determined to be 131 – 136 °C.
- Executive summary:
The melting point of the test material was investigated in accordance with the standardised guidelines OECD 102, under GLP conditions, using the capillary method.
The test material powder was placed at the sealed end of a glass capillary tube
(approx. 1 mm ID) to a height of 1 - 2 mm. The tube was placed in a melting point apparatus, the heating block of which was heated to 95 °C. The contents of the capillary were heated at 1 °C/min and the temperatures of melting stages were recorded.Under the conditions of this study the melting point of the test material was determined to be 131 – 136 °C.
Reference
The calibration substance, phenanthrene, gave an average melting point of 98 °C, which, when compared to the expected MP of 101 °C (Handbook of Chemistry and Physics, 1987), indicated an average deviation of 3 °C below the reported MP. The deviations of duplicate MP observations ranged from 0.0 °C to 0.2 °C. The observed MP of the test material, corrected for deviation determined by the calibration standard, was 131 – 136 °C. test material being thermally stable at the MP.
Description of key information
Under the conditions of this study the melting point of the test material was determined to be 131 – 136 °C.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 133.5 °C
Additional information
The melting point of the test material was investigated in accordance with the standardised guidelines OECD 102, under GLP conditions, using the capillary method. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).
The test material powder was placed at the sealed end of a glass capillary tube
(approx. 1 mm ID) to a height of 1 - 2 mm. The tube was placed in a melting point apparatus, the heating block of which was heated to 95 °C. The contents of the capillary were heated at 1 °C/min and the temperatures of melting stages were recorded.
Under the conditions of this study the melting point of the test material was determined to be 131 – 136 °C.
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