Abstract

A new method for prediction of fundamental physical properties of ionic liquids (ILs) is proposed. The Residual Volume Approach (RVA) allows the estimation of density and viscosity of unknown ILs, using a simple linear correlation between a given property and a newly defined substituent parameter βX. The proposed method has been developed for the density estimation of 50 n-alkyl-substituted imidazolium and tetraalkylammonium salts in a homologous series of ILs and has been extended for the estimation of viscosity, which also correlates linearly with the corresponding βX. In addition, the parameters βX are temperature and pressure independent, which allows the prediction of these values at any temperature and pressure

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