Registration Dossier
Registration Dossier
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EC number: 605-263-0 | CAS number: 161611-74-1
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
- Study period:
- From 22 December 2015 to 12 December 2016
- 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:
- 1995
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- 2008
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Version / remarks:
- 1998
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- differential scanning calorimetry
- Remarks:
- and then storage at negative temperature to determine freezing temperature
- Key result
- Melting / freezing pt.:
- < -80 °C
- Atm. press.:
- > 990 - < 1 020 hPa
- Conclusions:
- The freezing point of the test item is <-80°C
- Executive summary:
The freezing point of the test item was determined with Differential Scanning Calorimetry (DSC) according to recognized guidelines (OECD Guideline 102,EU Method A.1 and EPA OPPTS 830.7200). The test was GLP compliant and no deviations from the guidelines have been observed during the test.
Based on the results obtained with the DSC method, storage at low temperature have been performed (no guideline followed) to further investigate on the freezing point of the test item.
No crystalisation was observed during the DSC experiments neither after storage at -80°C.
Therefore, the freezing point of the test item is considered to be < - 80°C.
Reference
Preliminary test:
The test item was heated at a rate of 20°C/minutes from 17°C to 26°C. At this temperature, the test item lost 70% of his weight.
Main study:
Five experiments have been performed until -90°C, no crystalisation of the test item have been observed during the DSC experiments.
So an additional tests were conducted. Two samples of test item were stored for 23 hours in a freezer at -20 and -80°C under a flow of nitrogen. After these storage, the test item still was a liquid. According to these results, it was conclued that the freezing temperature of the test item is < -80°C.
Description of key information
The freezing point of the test item was determined with Differential Scanning Calorimetry (DSC) according to recognized guidelines (OECD Guideline 102,EU Method A.1 and EPA OPPTS 830.7200) and GLP and storage at negative temperatures .
No deviations from the guidelines have been observed during the test.
Key value for chemical safety assessment
Additional information
The freezing point of the test item is <-80°C.
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