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EC number: 480-410-8 | CAS number: 13482-23-0
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:
- 2006-05-04 to 2006-07-17
- 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:
- 1992
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- 1995
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- dynamic method
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 3.3 Pa
- Remarks on result:
- other: calculated value
- Conclusions:
- The Antoine constants from the regression of the data from the dynamic method were used to calculate the vapour pressure for the test item at 25 °C, which was found to be 3.3 Pa.
- Executive summary:
The Antoine constants from the regression of the data from the dynamic method were used to calculate the vapour pressure for the test item at 25 °C, which was found to be 3.3 Pa.
T/°C
p/hPa
p/Pa
20
1.4 x 10-2
1.4
25
3.3 x 10-2
3.3
50
7.8 x 10-2
78
Reference
The vapour pressure was measured with the dynamic method in the temperature range of 82 °C to 198 °C. The values for 20, 25 and 50 °C are calculated, using the Antoine constants A, B and C as shown.
Validity criteria for the measurement of the vapour pressure:
| Target condition according to guideline: | Actual condition according to the study: | Validity criteria met: |
| At least two vapour pressure and temperature values - and preferably three or more – are required in the range 0 to 50 °C (or 120 to 150 °C). | Temperatures tested ranged between 82 - 198 °C. The mean of two measurements is stated. | Yes |
| A log p versus 1 /T curve should be stated. | A log p versus 1/T curve is given in the raw data. | Yes |
| An estimate of the vapour pressure at 20 or 25 °C should be stated. | Values for 20 and 25 °C are given. | Yes |
Description of key information
The Antoine constants from the regression of the data from the dynamic method were used to calculate the vapour pressure for the test item at 25 °C, which was found to be 3.3 Pa.
Key value for chemical safety assessment
- Vapour pressure:
- 3.3 Pa
- at the temperature of:
- 25 °C
Additional information
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