Article ID Journal Published Year Pages File Type
217146 The Journal of Chemical Thermodynamics 2009 4 Pages PDF
Abstract

The solubility measurements of sodium dicarboxylate salts; sodium oxalate, malonate, succinate, glutarate, and adipate in water at temperatures from (278.15 to 358.15 K) were determined. The molar enthalpies of solution at T = 298.15 K were derived: ΔsolHm (m = 2.11 mol · kg−1) = 13.86 kJ · mol−1 for sodium oxalate; ΔsolHm (m = 3.99 mol · kg−1) = 14.83 kJ · mol−1 for sodium malonate; ΔsolHm (m = 2.45 mol · kg−1) = 14.83 kJ · mol−1 for sodium succinate; ΔsolHm (m = 4.53 mol · kg−1) = 16.55 kJ · mol−1 for sodium glutarate, and ΔsolHm (m = 3.52 mol · kg−1) = 15.70 kJ · mol−1 for sodium adipate. The solubility value exhibits a prominent odd–even effect with respect to terms with odd number of sodium dicarboxylate carbon numbers showing much higher solubility. This odd–even effect may have implications for the relative abundance of these compounds in industrial applications and also in the atmospheric aerosols.

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