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Vapour pressure

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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:  2.29E-015 mm Hg  is equivalent to vapour pressure of 3.05E-013Pa
Transition / decomposition:
no
Remarks:
no data provided in method

Selected VP: 2.29E-015 mm Hg  (Modified Grain Method)

 

Equivalent to a vapour pressure of 3.05E-013Pa (Modified Grain Method)

Overview of QSARs estimations on Vapour pressure of Sodium dodecylbenzenesulfonate/ Benzenesulfonic acid, dodecyl-, sodium salt

 

 

Method

 

Results

Remarks

Reference

QSAR estimate

Vapor Pressure Estimations (25 deg C):

 (Using BP: 660.62 deg C (estimated))

 (Using MP: 287.63 deg C (estimated))

   VP: 4.97E-021 mm Hg (Antoine Method)

     : 6.62E-019 Pa (Antoine Method)

   VP: 2.29E-015 mm Hg (Modified Grain Method)

     : 3.05E-013 Pa (Modified Grain Method)

   VP: 9.84E-015 mm Hg (Mackay Method)

     : 1.31E-012 Pa (Mackay Method)

  Selected VP: 2.29E-015 mm Hg            (Modified Grain Method)

                   : 3.05E-013 Pa

(Modified Grain Method)

 Subcooled liquid VP: 1.87E-012 mm Hg (25 deg C, Mod-Grain method)

                    : 2.5E-010 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 3.05E-013 Pa at 25C.
Executive summary:
A QSAR method predicts the vapour pressure of this substance to be 3.05E-013Pa at 25C.
Endpoint:
vapour pressure
Type of information:
calculation (if not (Q)SAR)
Remarks:
estimated by calculation
Adequacy of study:
weight of evidence
Study period:
not applicable
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Qualifier:
no guideline followed
Principles of method if other than guideline:
Calculation using method found in Lyman, W.J. 1985. Environmental exposure from chemicals, V.I, p.31, Neely, W.B., and Blau, G.E., editors. CRC Press. Boca Raton.
GLP compliance:
no
Type of method:
other: calculation
Vapour pressure:
0 Pa
Remarks on result:
other:  Temperature not given.
Conclusions:
The vapor pressure was calculated to be 3 E-13 Pa.
Executive summary:
Vapor pressure was calculated using the Lyman method, and found to be 3E-13 Pa.

Description of key information

A QSAR method predicts the vapour pressure of this substance to be 3.05E-013 Pa at 25C.
Vapor pressure was calculated using the Lyman method, and found to be 3E-13 Pa.

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 3.05E-013 Pa at 25C.

Vapor pressure was calculated using the Lyman method, and found to be 3E-13 Pa.