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EC number: 470-180-7 | CAS number: 61196-40-5
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:
- 10.02.2004 - 02.04.2004
- 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 (incl. QA statement)
- Type of method:
- effusion method: vapour pressure balance
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Temp.:
- 50 °C
- Vapour pressure:
- 0 Pa
- Conclusions:
- The vapour pressure of the test item was determined to be 7.3E-7 Pa at 20 °C, 1.7E-6 Pa at 25 °C and 8.7E-5 Pa at 50 °C, respectively.
- Executive summary:
A study was conducted according to OECD TG 104 and Guideline 67/548/EEC Annex V method A.4 to determine the vapour pressure of the test item. The vapour pressure was measured in the temperature range of 32 °C to 130 °C using the effusion method. Above 75 °C a vapour pressure could be measured. The vapour pressure was calculated using the linear regression equation of the Log P versus 1/T function. The vapour pressure of the test item was determined to be 7.3E-7 Pa at 20 °C, 1.7E-6 Pa at 25 °C and 8.7E-5 Pa at 50 °C, respectively.
Reference
Vapour Pressure Balance (Effusion Method)
The vapour pressure was measured in the temperature range of 32 °C to 130 °C Above 75 °C a vapour pressure could be measured.
Temperature / °C |
Vapour pressure / hPa |
75.0 |
1.9E-5 |
75.3 |
1.9E-5 |
81.2 |
5.8E-5 |
81.4 |
6.5E-6 |
84.9 |
8.5E-5 |
85.1 |
9.8E-5 |
90.0 |
1.8E-4 |
94.2 |
2.7E-4 |
99.3 |
4.9E-4 |
99.7 |
4.9E-4 |
105.5 |
8.0E-4 |
108.6 |
1.1E-3 |
115.0 |
2.0E-3 |
122.1 |
4.0E-3 |
130.1 |
8.8E-3 |
The vapour pressure at 20, 25 and 50 °C are calculated, using the Antoine constants A, B and C.
Temperature / °C |
Vapour pressure / hPa |
Vapour pressure / Pa |
log (p/hPa) = A + B / (C + T [°C]) |
20 |
7.26E-9 |
7.26E-7 |
A = 14.26417 |
25 |
1.73E-8 |
1.73E-6 |
B = -6567.44 |
50 |
8.73E-7 |
8.73E-5 |
C = 273.15 |
Description of key information
The vapour pressure of the test item was determined to be 7.3E-7 Pa at 20 °C, 1.7E-6 Pa at 25 °C and 8.7E-5 Pa at 50 °C, respectively.
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °C
Additional information
A study was conducted according to OECD TG 104 and Guideline 67/548/EEC Annex V method A.4 to determine the vapour pressure of the test item. The vapour pressure was measured in the temperature range of 32 °C to 130 °C using the effusion method. Above 75 °C a vapour pressure could be measured. The vapour pressure was calculated using the linear regression equation of the Log P versus 1/T function. The vapour pressure of the test item was determined to be 7.3E-7 Pa at 20 °C, 1.7E-6 Pa at 25 °C and 8.7E-5 Pa at 50 °C, respectively (reference 4.6-1).
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