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EC number: 613-147-6 | CAS number: 63141-09-3
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:
- 26 Jul - 26 Jul 2001
- 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:
- 92/69
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- dynamic method
- Temp.:
- 20 °C
- Vapour pressure:
- 15.7 hPa
- Remarks on result:
- other: The data have been obtained by using the Antoine-Equation.
- Temp.:
- 23.98 °C
- Vapour pressure:
- 19.7 hPa
- Remarks on result:
- other: The data have been obtained by using the Antoine-Equation.
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 20.9 hPa
- Remarks on result:
- other: The data have been obtained by using the Antoine-Equation.
- Temp.:
- 50 °C
- Vapour pressure:
- 73.8 hPa
- Remarks on result:
- other: The data have been obtained by using the Antoine-Equation.
- Temp.:
- 121.85 °C
- Vapour pressure:
- 1 022.9 hPa
- Remarks on result:
- other: The data have been obtained by using the Antoine-Equation.
- Conclusions:
- The vapour pressure of the test substance at 20, 25 and 50 °C corresponds to 15.7 hPa, 20.9 hPa and 73.8 hPa, respectively.
- Executive summary:
In a GLP study according to 92/69/EEC Method A.4, the vapour pressure of the test substance was determined using the dynamic method. The vapour pressure was measured in the temperature range of 23.98 °C to 121.85 °C. The values for 20, 25 and 50 °C are calculated, using the Antoine constants A, B and C as 15.7 hPa, 20.9 hPa and 73.8 hPa, respectively.
Reference
Validity criteria for the measurement of vapour pressure:
| Target condition according to guideline: | Actual condition according to the study: | Validity criteria met: |
| The vapour pressure should be determined for at least two temperatures. Three or more are preferred in the range 0 to 50 °C, in order to check the linearity of the vapour pressure curve. | Two values are available between 20 and 50 °C, 14 values were used for regression. | Yes |
| A log p versus 1 /T curve should be stated. | A curve for vapour pressure in hPa against 1/T is available | Yes |
| An estimate of the vapour pressure at 20 or 25 °C should be stated. | Values are available at 20 and 25 °C | Yes |
Description of key information
In a GLP study according to 92/69/EEC Method A4, the vapour pressure of the test substance was determined using the dynamic method. The vapour pressure was measured in the temperature range of 23.98 °C to 121.85 °C. The values for 20, 25 and 50 °C are calculated, using the Antoine constants A, B and C as 15.7 hPa, 20.9 hPa and 73.8 hPa, respectively.
Key value for chemical safety assessment
- Vapour pressure:
- 20.9 hPa
- at the temperature of:
- 25 °C
Additional information
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