Evaluation of Excess Correlation Factor in Dilute Binary Mixtures of Tri-N-Butyl Phosphate (TBP) in Nonpolar Solvents

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Abstract Excess correlation factor δg in dilute binary mixtures of TBP in nonpolar solvents like tetrach-loromethane, n–hexane, n–heptane, benzene, p–xyiene, carbon disulphide and cyclohexane has been calculated. δg is found to be positive in binary mixtures of TBP–p–xylene, TBP–carbon disulphide and negative in TBP–n–hexane, TBP-benzene, TBP–cyclohexane mixtures. δg changes its sign from negative to positive in TBP–tetrachloromethane and TBP–n heptane. A sharp peak observed in TBP–carbon–disulphide indicates possibility of complexation.