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EC number: 482-280-8 | 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:
- 25 April 2018 - 26 April 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- isoteniscope
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 71.94 Pa
- Conclusions:
- The vapour pressure of the test item was determined to be 71.9 Pa at 25 °C.
- Executive summary:
The vapour pressure of the test item was determined using EU Method A.4 and OECD Guidelines 104. The vapour pressure was determined using an isoteniscope method in which the sample's vapour pressure was measured using a mercury-in-glass manometer at different temperatures. Three runs were performed in total and the results plotted in a graph of Log10Vp (Pa) versus reciprocal temperature (1/T(K)). A straight line graph was obtained and the value of Log10[Vp(25 °C)] extrapolated from each graph. The mean Log10[Vp(25 °C)] was determined to be 1.86 and the vapour pressure of the test item to be 71.9 Pa at 25 °C.
Reference
Three runs were performed in total and the results plotted in a graph of Log10Vp (Pa) versus reciprocal temperature (1/T(K)). A straight line graph was obtained and the value of Log10[Vp(25 °C)] extrapolated from each graph. These results are tabulated below.
Table 1: Summary of Vapour Pressure Data
Run |
Log10[Vp(25 °C)] |
1 |
1.68 |
2 |
2.02 |
3 |
1.87 |
Mean |
1.86 |
Vapour Pressure |
71.94 Pa |
Description of key information
The vapour pressure of the test item was determined to be 71.9 Pa at 25 °C.
Key value for chemical safety assessment
- Vapour pressure:
- 71.9 Pa
- at the temperature of:
- 25 °C
Additional information
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