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EC number: 832-827-5 | CAS number: -
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- April 25, 2019 to May 22, 2019
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- European Community (EC), EC No. 761/2009, A.4: “Vapour Pressure”, 2009
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- Organisation for Economic Co-operation and Development (OECD), OECD Guidelines for the Testing of Chemicals No. 104: “Vapour Pressure”, 2006
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- effusion method: isothermal thermogravimetry
- Specific details on test material used for the study:
- No further details specified in the study report.
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
- Conclusions:
- The isothermal thermogravimetrical effusion method was applied for the deter-mination of the vapour pressure of SynNova Base Oil™.
A value of the vapour pressure of the test item was determined using the data obtained between 150 °C and 180 °C. The vapour pressure of the test item was estimated to be 5.49e-7 Pa at 20 °C. - Executive summary:
SynNova Base Oil™: Determination of the Vapour Pressure by Iso-thermal Thermogravimetry.
The purpose of this study was to determine the vapour pressure of the test item using the isothermal thermogravimetrical effusion method.
This study was performed in a GLP accredited laboratory and designed to comply with the following methods:
European Community (EC), EC No. 761/2009, A.4: “Vapour Pressure”, 2009
Organisation for Economic Co-operation and Development (OECD), OECD Guidelines for the Testing of Chemicals No. 104: “Vapour Pressure”, 2006
The isothermal thermogravimetrical effusion method was applied for the determination of the vapour pressure of SynNova Base Oil™.
A value of the vapour pressure of the test item was determined using the data obtained between 150 °C and 180 °C. The vapour pressure of the test item was estimated to be 5.49 x 10-7 Pa at 20 °C.
Reference
Weight loss of the test item in the temperature range of 150 °C to 180 °C
Temperature [°C] |
1/T [K] |
1000/T [K] |
Weight loss [µg/min] |
VT[/cm2/h] |
Log VT |
150 150 150 |
0.00236 0.00236 0.00236 |
2.36407 2.36407 2.36407 |
1.571 1.568 1.569 |
0.000189 0.000188 0.000188 |
-3.724643 -3.725473 -3.725196 |
160 160 160 |
0.00231 0.00231 0.00231 |
2.30947 2.30947 2.30947 |
3.101 3.147 3.130 |
0.000372 0.000378 0.000376 |
-3.429317 -3.422922 -3.425274 |
170 170 170 |
0.00226 0.00226 0.00226 |
2.25734 2.25734 2.25734 |
6.428 6.322 6.114 |
0.000771 0.000759 0.000734 |
-3.122743 -3.119964 -3.134493 |
180 180 180 |
0.00221 0.00221 0.00221 |
2.20751 2.20751 2.20751 |
12.54 12.48 12.41 |
0.001505 0.001498 0.001489 |
-2.822521 -2.824604 -2.827047 |
Estimation of VTand PT: |
Log VT/at 20 °C Log PT/at 20 °C PT/at 20 °C |
-9.7691273 -6.2602293 0.0000005 |
|||
PT[Pa]/at 20 °C |
5.49E-07 |
||||
Values of log VTand log PTof the reference items
Reference Items |
PT20 °C Literature/Pa |
VT20 °C extrapolation |
Water Naphthalene Hexachlorobenzene Chrysene |
2.34E+03 6.50E+00 1.45E-03 8.40E-07 |
3.10E-02 4.22E-04 4.43E-07 1.37E-10 |
Description of key information
The vapour pressure of the test item was estimated to be 5.49 x 10-7 Pa at 20 °C.
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 20 °C
Additional information
The isothermal thermogravimetrical effusion method was applied for the determination of the vapour pressure of SynNova Base Oil™.
A value of the vapour pressure of the test item was determined using the data obtained between 150 °C and 180 °C. The vapour pressure of the test item was estimated to be 5.49 x 10-7Pa at 20 °C.
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