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EC number: 237-862-4 | CAS number: 14025-10-6
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- key study
- Study period:
- 1999
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: peer reviewed
- Qualifier:
- according to guideline
- Guideline:
- other: extrapolation according to Plank and Riedel
- Deviations:
- not applicable
- Principles of method if other than guideline:
- extrapolation according to Plank and Riedel
- GLP compliance:
- not specified
- Type of method:
- other: extrapolation
- Key result
- Temp.:
- ca. 25 °C
- Vapour pressure:
- 0 hPa
- Remarks on result:
- other: extrapolated
- Conclusions:
- The vapour pressure of edetic acid was extrapolated to be 2E-012 hPa at 25°C according to Riedel and Plank.
- Endpoint:
- vapour pressure
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Study period:
- 1999
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: peer reviewed
- Justification for type of information:
- The substance contains of the organic moiety edetic acid and the metall cations potassium and cobalt. As the latter are known to decrease the vapour pressure compared to protons, it is reasonable that the vapour pressure of EDTA-CoK2 is lower than the one of edetic acid.
- Reason / purpose for cross-reference:
- read-across source
- Qualifier:
- according to guideline
- Guideline:
- other: extrapolation according to Plank and Riedel
- Deviations:
- not applicable
- Principles of method if other than guideline:
- extrapolation according to Plank and Riedel
- GLP compliance:
- not specified
- Type of method:
- other: extrapolation
- Key result
- Temp.:
- ca. 25 °C
- Vapour pressure:
- 0 hPa
- Remarks on result:
- other: extrapolated
- Conclusions:
- The substance contains of the organic moiety edetic acid and the metall cations potassium and cobalt. As the latter are known to decrease the vapour pressure compared to protons, it is reasonable that the vapour pressure of EDTA-CoK2 is lower than the one of edetic acid. The vapour pressure of edetic acid was calculated to be ca. 0 Pa, thus the vapour pressure of EDTA-CoK2 can be stated to be ca. 0 Pa as well.
Referenceopen allclose all
Clausius Clapeyron
δ/δTΔH = 0
ln p = A + B/T
Dupre Rankine
δ2/δT2ΔH = 0
ln p = A+ B/T + C ln T
Plank and Riedel (empirical)
ln p = A + B/T + C ln T + D T^E
A = 1.95E+02
B = -2.53E+04
C = -2.24E+01
D = 3.10E-18
E = 6.00E+00
T [K] |
ln p [ln Pa] |
P [Pa] |
Comment |
513 |
5.94E+00 |
3.80E+02 |
Triple point |
809 |
1.46E+01 |
2.22E+06 |
Critical point |
273 |
-2.34E+01 |
6.98E-11 |
extrapolated |
293 |
-1.86E+01 |
8.06E-09 |
extrapolated |
298 |
-1.76E+01 |
2.35E-08 |
extrapolated |
Clausius Clapeyron
δ/δTΔH = 0
ln p = A + B/T
Dupre Rankine
δ2/δT2ΔH = 0
ln p = A+ B/T + C ln T
Plank and Riedel (empirical)
ln p = A + B/T + C ln T + D T^E
A = 1.95E+02
B = -2.53E+04
C = -2.24E+01
D = 3.10E-18
E = 6.00E+00
T [K] |
ln p [ln Pa] |
P [Pa] |
Comment |
513 |
5.94E+00 |
3.80E+02 |
Triple point |
809 |
1.46E+01 |
2.22E+06 |
Critical point |
273 |
-2.34E+01 |
6.98E-11 |
extrapolated |
293 |
-1.86E+01 |
8.06E-09 |
extrapolated |
298 |
-1.76E+01 |
2.35E-08 |
extrapolated |
Description of key information
The substance contains of the organic moiety edetic acid and the metall cations potassium and cobalt. As the latter are known to decrease the vapour pressure compared to protons, it is reasonable that the vapour pressure of EDTA-CoK2 is lower than the one of edetic acid. The vapour pressure of edetic acid was calculated to be ca. 0 Pa, thus the vapour pressure of EDTA-CoK2 can be stated to be ca. 0 Pa as well.
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 20 °C
Additional information
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