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EC number: 471-510-2 | 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:
- 21.09.2006-26.09.2006
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- GLP compliance:
- yes
- Type of method:
- effusion method: vapour pressure balance
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0 hPa
- Conclusions:
- The vapour pressure of the test item was determined to be 5.8e-9 hPa at 20 °C.
- Executive summary:
A study was conducted according to OECD TG 104 using the vapor pressure balance. The test item was degassed under vacuum at appr. 10-5hPa at 60 +/- 5°C for 16 hours before the measurement. The apparatus consists of a high vacuum chamber. The vapor pressure of the test item was calculated from the increase of mass during an elapsed time period. The vapour pressure of the test item was determined to be 5.8e-9 hPa at 20 °C.
Reference
The calculated vapour pressure values are extrapolated with the Antoin constants from the regression for the temperature 20°C, 25°C and 50°C.
T / °C |
p / hPa |
p / Pa |
20 |
5.8 x 10-9 |
5.8 x 10-7 |
25 |
1.2 x 10-8 |
1.2 x 10-6 |
50 |
3.5 x 10-7 |
3.5 x 10-5 |
Description of key information
The vapour pressure of the test item was determined to be 5.8e-9 hPa at 20 °C.
Key value for chemical safety assessment
- Vapour pressure:
- 0 hPa
- at the temperature of:
- 20 °C
Additional information
A study was conducted according to OECD TG 104 using the vapor pressure balance. The test item was degassed under vacuum at appr. 10-5hPa at 60 +/- 5°C for 16 hours before the measurement. The apparatus consists of a high vacuum chamber. The vapor pressure of the test item was calculated from the increase of mass during an elapsed time period. The vapour pressure of the test item was determined to be 5.8e-9 hPa at 20 °C.
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