Registration Dossier
Registration Dossier
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EC number: 242-472-2 | CAS number: 18643-08-8
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:
- 26 Feb to 27 Feb 2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Reason / purpose for cross-reference:
- reference to same study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- GLP compliance:
- no
- Type of method:
- capillary method
- Remarks:
- Photocell detection
- Melting / freezing pt.:
- 25.7 °C
- Atm. press.:
- 1 013 hPa
- Remarks on result:
- other: The atmospheric pressure is assumed to be normal.
- Conclusions:
- A melting point value of 25.7 °C at 1013 hPa was determined in a reliable study conducted according to an appropriate test protocol. It was not compliant with GLP.
Reference
Results
Results of photocell detection
|
Melting temperature |
|
|
Test 1 |
Test 2 |
Left measurement (°C) |
25.5 |
25.6 |
Centre measurement (°C) |
25.9 |
25.8 |
Right measurement (°C) |
25.6 |
25.5 |
Standard deviation (°C) |
0.18 |
0.17 |
Average (°C) |
25.7 |
25.6 |
Mean value = 25.7 °C, 298.9 K
Remarks:
The detection of the melting point is released automatically by the measurement system. In test 1 an additional manual measurement was performed. The difference to the automatic detection is not evident. Therefore the manual detection was not repeated in test 2 and there are no values in the table for the manual measurement.
Description of key information
Chlorodimethyloctadecylsilane: 25.7 °C at 1013 hPa (EU Method A.1)
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 25.7 °C
Additional information
A melting point of 25.7 °C (1013 hPa) was determined by photocell detection (capillary method) according to EU Method A.1.
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