Registration Dossier
Registration Dossier
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EC number: 217-982-3 | CAS number: 2031-62-1
Boiling point
Administrative data
Link to relevant study record(s)
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 03 Feb to 05 Feb 2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling point/boiling range)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Version / remarks:
- 1.4.7 / 1.6.6.2
- GLP compliance:
- no
- Type of method:
- differential scanning calorimetry
- Boiling pt.:
- 97.8 °C
- Atm. press.:
- 1 013 hPa
- Remarks on result:
- other: Atmospheric pressure assumed to be normal
- Conclusions:
- A boiling point value of 97.8 °C at 1013 hPa was determined in a reliable study conducted according to an appropriate test protocol. It was not compliant with GLP.
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 03 Feb to 05 Feb 2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 103 (Boiling point/boiling range)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.2 (Boiling Temperature)
- Version / remarks:
- 1.4.5 / 1.6.5
- GLP compliance:
- no
- Type of method:
- photocell detection
- Remarks:
- capillary tube method
- Boiling pt.:
- 98.8 °C
- Atm. press.:
- 1 013 hPa
- Remarks on result:
- other: Atmospheric pressure assumed to be normal.
- Conclusions:
- A boiling point value of 98.8°C at 1013 hPa was determined in a reliable study conducted according to an appropriate test protocol. It was not compliant with GLP.
Referenceopen allclose all
Results
The DSC diagrams show an endothermic peak with an onset temperature at about 96.4°C (369.6 K) (test 1) and 95.7°C (368.9 K) (test 2). The simultaneous TG shows a significant loss of weight.
Test |
Measured boiling temperature |
Measured atmospheric pressure |
Boiling temperature corrected to normal atmospheric pressure |
||
°C |
K |
kPa |
°C |
K |
|
1 |
96.4 |
369.6 |
96.0 |
98.1 |
371.3 |
2 |
95.7 |
368.9 |
96.0 |
97.4 |
370.6 |
Mean value |
96.1 |
369.3 |
96.0 |
97.8 |
371.0 |
Results
Test |
Measured boiling temperature |
Measured atmospheric pressure |
Boiling temperature corrected to normal atmospheric pressure |
||
°C |
K |
kPa |
°C |
K |
|
1 |
96.9 |
370.1 |
957 |
98.7 |
371.9 |
2 |
97.0 |
370.2 |
957 |
98.9 |
372.1 |
Mean value |
97.0 |
370.2 |
957 |
98.8 |
372.0 |
Description of key information
Diethoxy(methyl)silane: 97.8 °C (measured)
Key value for chemical safety assessment
- Boiling point at 101 325 Pa:
- 97.8 °C
Additional information
A measured boiling point value of 97.8°C at 1013 hPa was determined for the test substance according to EU Method A.2 (differential scanning calorimetry, thermogravimetry). This is supported by a second measured boiling point value of 98.8 °C at 1013 hPa (photocell detection, capillary tube method), and a predicted value of 123 °C at 1013 hPa using an accepted calculation method (QSAR). The result is in principle supporting.
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