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Physical & Chemical properties

Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
(Q)SAR
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification
Qualifier:
according to
Guideline:
other: QSAR method (MPBPVPWIN)
GLP compliance:
not specified
Type of method:
other: QSAR model
Test no.:
#1
Temp.:
25 °C
Vapour pressure:
0 mm Hg
Remarks on result:
other: Antoine method (estimated)
Test no.:
#2
Temp.:
25 °C
Vapour pressure:
0 mm Hg
Remarks on result:
other: Modified Grain method (estimated)
Test no.:
#3
Temp.:
25 °C
Vapour pressure:
0 mm Hg
Remarks on result:
other: Mackay Method (estimated)
Conclusions:
The vapor pressure has been estimated by QSAR tool (MPBPVPWIN) using 3 validated method Antoine Method, Modified grain Method and Mackay Method.
As expected for a sodium organic salt, the vapor pressure of the test item is very low, comprised between 3.85E-9 and 1.91E-8 mm Hg at 25 °C calculated using the QSAR tool.

The modified Grain method is estimated to be the best all-around VP estimation method currently available as described in the MPBPVPWin user guide. The value 1.91E-8 mmHg (2.54E-6 Pa) estimated with the modified Grain method will be retained.

Description of key information

The vapor pressure has been estimated by QSAR tool (MPBPVPWIN) using 3 validated method Antoine Method, Modified grain Method and Mackay Method.

As expected for a sodium organic salt, the vapor pressure of the test item is very low, comprised between 3.85E-9 and 1.91E-8 mm Hg at 25 °C calculated using the QSAR tool.

The modified Grain method is estimated to be the best all-around VP estimation method currently available as described in the MPBPVPWin user guide. The value 1.91E-8 mmHg (2.54E-6 Pa) estimated with the modified Grain method will be retained.

Key value for chemical safety assessment

Vapour pressure:
0 Pa
at the temperature of:
25 °C

Additional information