Property Calculation
⇒ Saturated Vapor Pressure
⇒ Saturated Liquid Density
⇒ Liquid Dynamic Viscosity
⇒ Surface Tension
⇒ Heat of Vaporization
Property Estimation
⇒ UNIFAC
⇒ MOSCED
⇒ Joback
Group Assignment
⇒ UNIFAC and PSRK

Limiting Activity Coefficients

Calculation by MOSCED1

Component 1
Component 2
Temperatures  K 



MOSCED Parameters
No. ν λ τ q α β
1 58.6 14.37 2.53 1.00 12.5813.29
2 147.0 15.20 0.00 1.00 0.00 0.00

Parameters λ, τ, α, and β are given in (J/cm3)1/2 and ν in cm3


Calculation for Given Temperatures
Temperature [K] γ (1 solved in 2) γ (2 solved in 1)
290.00 15.37 66.51
300.00 14.88 46.12
310.00 14.22 33.31
320.00 13.44 24.92
330.00 12.60 19.21
340.00 11.73 15.21

Search Dortmund Data Bank for Available Data

MOSCED Publication

Lazzaroni M.J., Bush D., Eckert C.A., Frank T.C., Gupta S., Oslon J.D.,
"Revision of MOSCED Parameters and Extension to Solid Solubility Calculations",
Ind.Eng.Chem.Res., 44(11), 4075-4083, 2005

Available online

MOSCED Equations

MOSCED Equations

Note: The value 3.4 in the equation for ξ is different from the value given in the publication. The value in the publication (3.24) has been confirmed to be a typing error.

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