EPA On-line Tools for Site Assessment Calculation

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The effective solubility calculator has been modified to account for estimated temperature dependence of solubility. The original calculator data are still available for use.

Temperature-Dependent Effective Solubility Calculator

Effective Solubility C_w = x_o S

C_w = Effective solubility
x_o = mole fraction (of chemical in fuel)
S = solubility

Mole Fraction x_o = MF_x MW_o / MW_x

MF_x = mass fraction of selected chemical in fuel
MW_o = average molecular weight of fuel
est. 105 g/mole for gasoline
est. 165 g/mole for Jet fuel
est. 230 g/mole for diesel fuel
MW_X = molecular weight of selected chemical

Background and Data on temperature dependence and Temperature values used in the calculator: Note the discrepancies among published data sets by checking the background data.
Temperatures of shallow ground water in the U.S
Fahrenheit to Centigrade converter

Site Name

Date

Chemical

Molecular Weight

Desired Temperature

^oC

Solubility (S)

mg/L

Example Fuel

Average Molecular Weight of Fuel (MW_o)

Percent Mass Fraction

Effective Solubility (C_w)

mg/L

Fuel composition note:

Contact Jim Weaver to ask a technical question on this material.