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EC number: 200-609-3 | CAS number: 65-45-2
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:
- 08-Jun-2010 to 20-Aug-2010
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study conducted in compliance with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results. The study report was conclusive and done to a valid guideline.
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Deviations:
- no
- GLP compliance:
- no
- Type of method:
- gas saturation method
- Temp.:
- 25 °C
- Vapour pressure:
- 0.002 Pa
- Remarks on result:
- other: interpolated value
- Temp.:
- 20 °C
- Vapour pressure:
- 0.001 Pa
- Remarks on result:
- other: measured value
- Temp.:
- 30 °C
- Vapour pressure:
- 0.004 Pa
- Remarks on result:
- other: measured value
- Temp.:
- 40 °C
- Vapour pressure:
- 0.016 Pa
- Remarks on result:
- other: measured value
- Transition / decomposition:
- no
- Conclusions:
- Calculation of the vapor pressure at 25 °C by interpolation based upon the simplified Clausius-Clapeyron equation resulted in a vapor pressure of 2.0 x 10 E-3 Pa at 25 °C.
- Executive summary:
During this study, the vapor pressure of the test item has been determined using the gas saturation method. The vapor pressure of salicylamide was measured at test temperatures of 20 °C, 30 °C and 40 °C and was determined to be 9.7 x 10-4Pa at 20 °C, 4.2 x 10-3Pa at 30 °C, 1.6 x 10-2Pa at 40 °C. The vapor pressure at 25 °C was interpolated from the vapor pressure curve and was calculated to be 2.0 x 10-3Pa at 25 °C.
Reference
Results of the Vapor Pressure Determination
Column No. |
Temp. |
Volume* |
Amount of test item in trap 1 |
Amount of test item in trap 2 |
Total amount of test item |
Vapor pressure |
Average vapor pressure |
|
[°C] |
[mL] |
[µg] |
[µg] |
[µg] |
[Pa] |
[Pa] |
1 |
20.1 |
249060 |
13.140 |
0.000 |
13.140 |
9.4 x 10-4 |
9.7 x 10-4 |
2 |
320787 |
19.473 |
0.000 |
19.473 |
1.1 x 10-3 |
||
3 |
388851 |
19.814 |
0.000 |
19.814 |
9.1 x 10-4 |
||
1 |
30.2 |
67934 |
15.092 |
0.530 |
15.622 |
4.2 x 10-3 |
4.2 x 10-3 |
2 |
78835 |
17.496 |
0.000 |
17.496 |
4.1 x 10-3 |
||
3 |
102965 |
23.816 |
0.000 |
23.816 |
4.3 x 10-3 |
||
1 |
39.8 |
53331 |
44.824 |
0.000 |
44.824 |
1.6 x 10-2 |
1.6 x 10-2 |
2 |
68191 |
56.287 |
0.000 |
56.287 |
1.6 x 10-2 |
||
3 |
81830 |
68.166 |
0.000 |
68.166 |
1.6 x 10-2 |
Description of key information
0.0020 Pa, 25°C, OECD 104, gas saturation, Weissenfeld 2010
Key value for chemical safety assessment
- Vapour pressure:
- 0.002 Pa
- at the temperature of:
- 25 °C
Additional information
A recent guideline study is available which is considered to be reliable and adequate, and is carried forward for use in risk assessment, classification and labelling.
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