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Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
(Q)SAR
Adequacy of study:
key study
Study period:
not applicable
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
Justification for type of information:
QSAR prediction:QSAR method cited as reliable in the REACH guidance
Qualifier:
no guideline followed
Principles of method if other than guideline:
not applicable. QSAR method
GLP compliance:
no
Remarks:
not applicable. QSAR method
Type of method:
other: not applicable. QSAR method
Temp.:
25 °C
Vapour pressure:
0 Pa
Remarks on result:
other: 2.27E-016 mm Hg is equivalent to a vapour pressure of 3.03E-014 Pa
Transition / decomposition:
no
Remarks:
no data provided in method

 Selected VP: 2.27E-016 mm Hg (Modified Grain Method)

 Equivalent to a vapour pressure of 3.03E-014 Pa (Modified Grain Method)

 

Overview of QSARs estimations on Vapour pressure of Dipotassium oxide

 

 

 

Method

 

Results

Remarks

Reference

QSAR estimate

Vapor Pressure Estimations (25 deg C):

 (Using BP: 691.46 deg C (estimated))

 (Using MP: 302.03 deg C (estimated))

   VP: 3.51E-023 mm Hg (Antoine Method)

     : 4.68E-021 Pa (Antoine Method)

   VP: 2.27E-016 mm Hg (Modified Grain Method)

     : 3.03E-014 Pa (Modified Grain Method)

   VP: 1.06E-015 mm Hg (Mackay Method)

     : 1.41E-013 Pa (Mackay Method)

  Selected VP: 2.27E-016 mm Hg (Modified Grain Method)

            : 3.03E-014 Pa (Modified Grain Method)

 Subcooled liquid VP: 2.83E-013 mm Hg (25 deg C, Mod-Grain method)

                    : 3.77E-011 Pa (25 deg C, Mod-Grain method)

 

Valid with restrictions (2); QSAR method;

Estimated values

MPBPWIN (v.1.43)

 

 

Conclusions:
A QSAR method predicts the vapour pressure of this substance to be  3.03E-014 Pa at 25C.
Executive summary:
A QSAR method predicts the vapour pressure of this substance to be  3.03E-014 Pa at 25C.

Description of key information

A QSAR method predicts the vapour pressure of this substance to be  3.03E-014 Pa  at 25C.

Key value for chemical safety assessment

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

Additional information

A QSAR method predicts the vapour pressure of this substance to be  3.03E-014 Pa at 25C.