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EC number: 272-221-2 | CAS number: 68784-12-3
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- 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
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- dynamic method
- Temp.:
- 20 °C
- Vapour pressure:
- < 0 hPa
- Remarks on result:
- other: calculated from the regression curve
- Temp.:
- 25 °C
- Vapour pressure:
- < 0 hPa
- Remarks on result:
- other: calculated from the regression curve
- Temp.:
- 50 °C
- Vapour pressure:
- 0 hPa
- Remarks on result:
- other: calculated from the regression curve
- Conclusions:
- The vapour pressure of the test substance is < 1 x 10-6 hPa at 20°C and 25°C and 6.2 x 10-6 hPa at 50°C.
- Executive summary:
The vapour pressure of the test substance was tested in accordance with OECD guideline 104 and found to be <1x10-6 hPa at 20°C and 25°C and 6.2 x 10-6 hPa at 50°C, respectively.
Reference
Results:
| Temperature (°C) | Vapour pressure (hPa) | |
| cell 3 | cell 7 | |
| 41.8 | 2.14 x 10-6 | 2.07 x 10-6 |
| 51.9 | 7.34 x 10-6 | 7.53 x 10-6 |
| 64.0 | 3.44 x 10-5 | 3.59 x 10-5 |
The regression of the results leads with a mean deviation of 3% to the following equation:
ln(p/hPa) = 29.6902 - 13471.33/(T/K)
The vapour pressure at 20, 25 and 50°C was calculated from the regression equation
Vapour pressures calculated from the regression equation:
| Temperature (°C) | Vapour Pressure (hPa) | |
| 20 | < 1 x 10-6 | |
| 25 | < 1.0 x 10-6 | |
| 50 | 6.2 x 10-6 | |
Description of key information
Vapour pressure:
20 °: < 1x10-6 hPa
25 °C: < 1x10-6 hPa
50 °C: 6.2x10-6 hPa
Key value for chemical safety assessment
- Vapour pressure:
- 0 hPa
- at the temperature of:
- 20 °C
Additional information
The vapour pressure of the test substance is < 1 x 10-6 hPa at 20°C and 25°C and 6.2 x 10-6 hPa at 50°C, respectively.
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