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EC number: 915-748-1 | 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:
- 2015-06-12 to 2015-06-25
- 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
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- GLP compliance:
- no
- Other quality assurance:
- ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
- Type of method:
- differential scanning calorimetry
- Key result
- Melting / freezing pt.:
- < -20 °C
- Atm. press.:
- 998.9 hPa
- Decomposition:
- yes
- Decomp. temp.:
- 267 °C
- Remarks on result:
- other: No melting point was found between -150°C and room temperature under these conditions. A glass transition was observed at -119°C
- Conclusions:
- The melting point of the substance was considered to be <-20°C. No melting point was found between -150°C and room temperature, but a glass transiiton was obtained at -119°C using a relevant test method. The result is considered to be reliable.
Reference
The test item was cooled to -150 °C at a rate of 2 K/min. Upon heating the heat flow curve shows a glass transition at -118/-119 °C, indicating that the test item had solidified amorphously. The DSC thermograms are shown in the document attached (Appendix 1).
Description of key information
Melting point: <-20°C (OECD 102)
Key value for chemical safety assessment
Additional information
The melting point of the substance was determined using Differential Scanning Calorimetry (DSC) in accordance with a known quality system (ISO 17025). The melting point of the substance is <-20°C; no melting point was observed between -150°C and room temperature under the conditions of the study, but a glass transition was observed at -119°C. In addition, the substance was observed to undergo decomposition from about 267°C at 998.9 hPa.
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