Registration Dossier
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EC number: 217-370-6 | CAS number: 1825-62-3
Boiling point
Administrative data
Link to relevant study record(s)
- Endpoint:
- boiling point
- Type of information:
- (Q)SAR
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
- Justification for type of information:
- QSAR prediction
- Principles of method if other than guideline:
- The result was obtained using an appropriate QSAR method (see attached QMRF and QPRF for details).
- GLP compliance:
- no
- Type of method:
- other: QSAR
- Boiling pt.:
- 78 °C
- Atm. press.:
- 101.3 kPa
- Conclusions:
- A boiling point value of 78°C at 101.3 kPa has been obtained for the test substance using an accepted calculation method. The result is considered reliable.
- Endpoint:
- boiling point
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 06 Nov to 25 Nov 2014
- 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:
- photocell detection
- Remarks:
- capillary tube method
- Boiling pt.:
- 75.1 °C
- Atm. press.:
- 1 013 hPa
- Remarks on result:
- other: Atmospheric pressure assumed to be normal
- Conclusions:
- A boiling point value of 75.1 °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:
- 06 Nov to 25 Nov 2014
- 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.:
- 75.8 °C
- Atm. press.:
- 1 013 hPa
- Remarks on result:
- other: Atmospheric pressure assumed to be normal
- Conclusions:
- A boiling point value of 75.8 °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 of capillary tube method / Photocell detectionmetry
Test |
Measured boiling temperature |
Measured atmospheric pressure |
Boiling temperature corrected to normal atmospheric pressure |
||
|
°C |
K |
kPa |
°C |
K |
1 |
73.6 |
346.8 |
96.1 |
75.1 |
348.3 |
2 |
73.5 |
346.7 |
96.1 |
75.0 |
348.2 |
|
|
|
|
|
|
Mean value |
73.6 |
346.8 |
|
75.1 |
348.3 |
At small deviations from the normal pressure (max. ± 5 kPa) the boiling temperatures are normalized to Tn by means of the number-value equation by Sidney Young.
Results of differential scanning calorimetry
Test |
Measured boiling temperature |
Measured atmospheric pressure |
Boiling temperature corrected to normal atmospheric pressure |
||
|
°C |
K |
kPa |
°C |
K |
1 |
74.3 |
347.5 |
96.2 |
75.8 |
349.0 |
2 |
74.3 |
347.5 |
96.0 |
75.8 |
349.0 |
|
|
|
|
|
|
Mean value |
74.3 |
347.5 |
|
75.8 |
349.0 |
At small deviations from the normal pressure (max. ± 5 kPa) the boiling temperatures are normalized to Tn by means of the number-value equation by Sidney Young.
Description of key information
Ethoxytrimethylsilane: 75.8°C at 1013 hPa (DCS, EU Method A.2)
Key value for chemical safety assessment
- Boiling point at 101 325 Pa:
- 75.8 °C
Additional information
A boiling point value of 75.8 °C (1013 hPa) was determined by differential scanning calorimetry according to EU Method A.2. In a supporting study a boiling point value of 75.1 °C (1013 hPa) was determined by capillary tube method (photocell detection) according to EU Method A.2. Additionally, a predicted boiling point value of 78 °C at 1013 hPa was obtained using an accepted calculation method (QSAR). The result is considered to be reliable.
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