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EC number: 439-730-3 | 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:
- June - August 2000
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- 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:
- yes
- Type of method:
- effusion method: vapour pressure balance
- Test no.:
- #1
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
- Key result
- Test no.:
- #2
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Test no.:
- #3
- Temp.:
- 50 °C
- Vapour pressure:
- 0.007 Pa
- Conclusions:
- The vapour pressure of the test item at 25°C was determined to be 0.000195 Pa.
- Executive summary:
A study was conducted according to Regulation (EC) No 440/2008 method A.4 to determine the vapour pressure of the test item. The vapour pressure was measured in the temperature range of 21 to 98 °C. The values for 20, 25, and 50 °C are calculated, using the Antoine constants A, B and C. The vapour pressure of the test item at 20, 25 and 50°C were determined to be 8.8E-5 Pa, 1.9E-4 Pa and 6.9E-3 Pa respectively.
Reference
Vapour pressure balance (resutls)
Temperature [°C] |
vapour pressure [hPa] |
45.1 |
3.4 x 10E-5 |
54.5 |
1.1 x 10E-4 |
62.9 |
3.6 x 10E-4 |
67.6 |
7.1 x 10E-4 |
68.2 |
7.1 x 10E-4 |
75.3 |
1.6 x 10E-3 |
80.2 |
2.9 x 10E-3 |
86.9 |
5.5 x 10E-3 |
88.2 |
5.9 x 10E-3 |
92.0 |
8.6 x 10E-3 |
98.2 |
1.6 x 10E-2 |
The values for 20, 25, and 50°C are calculated, using the Antoine constants A, B and C.
The calculated vapour pressure values are:
p(20°C)
= 8.8 x 10E-5 Pa
p(25°C}
= 1.9 x 10E-4 Pa
p(50°C)
= 6.9 x 10E-3 Pa
Description of key information
The vapour pressure of the test item at 25°C was determined to be 0.000195 Pa (reference 4.6 -1).
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °C
Additional information
A study was conducted according to, Regulation (EC) No 440/2008 method A.4 to determine the vapour pressure of the test item. The vapour pressure was measured in the temperature range of 21 to 98 °C. The values for 20, 25, and 50 °C are calculated, using the Antoine constants A, B and C. The vapour pressure of the test item at 20, 25 and 50°C were determined to be 8.8E-5 Pa, 1.9E-4 Pa and 6.9E-3 Pa respectively.
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