Abstract

Experimental solubilities are reported for anthracene dissolved in four binary alkane + 2-methyl-2-propanol solvent mixtures at 25°C. The alkane cosolvents studied were n-heptane, cyclohexane, methylcyclohexane and 2,2,4-trimethylpentane. Results of these measurements are used to test two mathematical representations based upon the combined Nearly Ideal Binary Solvent (NIBS)/Redlich-Kister and Modified Wilson equations. For the four systems studied, the Combined NIBS/Redlich-Kister equation was found to provide the better mathematical representation of the experimental data, with overall average absolute deviations between measured and calculated values being approximately ±0.5%. Slightly larger deviations were noted in the case of the Modified Wilson equation.

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