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EC number: 936-023-6 | CAS number: 950782-86-2
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:
- other: GLP-Guideline study
- 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
- Remarks on result:
- other: value is extrapolated
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Remarks on result:
- other: value is extrapolated
- Temp.:
- 50 °C
- Vapour pressure:
- 0 Pa
- Remarks on result:
- other: value is extrapolated
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: GLP-Guideline study
- 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
- Remarks on result:
- other: value is extrapolated
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Remarks on result:
- other: value is extrapolated
- Temp.:
- 50 °C
- Vapour pressure:
- 0 Pa
- Remarks on result:
- other: value is extrapolated
Referenceopen allclose all
The vapour pressure was measured in the temperature range of 35 °C to 141 °C. Above 86 °C a vapour pressure could be measured. The measured vapour pressures at the corresponding
temperatures are listed in the following table:
Temperature [°C]
|
Vapour pressure [hPa]
|
86.0 |
1.8 * 10-5 |
91.2 |
2.7 * 10-5 |
97.5 |
3.8 * 10-5 |
103.6 |
2.0 * 10-4 |
109.6 |
4.2 * 10-4 |
114.3 |
7.1 * 10-4 |
120.5 |
1.4 * 10-3 |
126.3 |
2.7 * 10-3 |
132.7 |
5.2 * 10-3 |
141.1 |
1.1 * 10-3 |
The values for 20, 25 and 50 °C are calculated, using the Antoine constants A, B and C
log (p [hPa]) = A + B/(C+T[°C])
A = 16.78143
B = -7736.65
C = 273.15
T [°C] |
p [hPa] |
P [Pa] |
20 |
2.5 * 10-10 |
2.5 * 10-8 |
25 |
6.8 * 10-10 |
6.8 * 10-8 |
50 |
6.9 * 10-8 |
6.9 * 10-6 |
The vapour pressure was measured in the temperature range of 33 °C to 138 °C. Above 91 °C a vapour pressure could be measured. The measured vapour pressures at the corresponding
temperatures are listed in the following table:
Temperature [°C]
|
Vapour pressure [hPa]
|
91.0 |
1.3 * 10-5 |
94.2 |
1.8 * 10-5 |
99.8 |
4.2 * 10-5 |
105.6 |
9.0 * 10 -5 |
111.5 |
2.1 * 10-4 |
116.4 |
3.7 * 10-4 |
122.3 |
7.4 * 10 -4 |
129.0 |
1.7 * 10-3 |
138.4 |
5.4 * 10-3 |
The values for 20, 25 and 50 °C are calculated, using the Antoine constants A, B and C
log (p [hPa]) = A + B/(C+T[°C])
A = 17.87231
B = -8298.09
C = 273.15
T [°C] |
p [hPa] |
P [Pa] |
20 |
3.7 * 10-11 |
3.7 * 10 -9 |
25 |
1.1 * 10-10 |
1.1 * 10 -8 |
50 |
6.9 * 10-8 |
1.6 * 10-6 |
Description of key information
0.000000025 Pa - 0.0000000037 Pa at 20°C (extrapolated)
(OECD 104, effusion method: vapour pressure balance)
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 20 °C
Additional information
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