Excess molar volume (V-E) at 298.15 K are reported for the binary systems of heterocyclic nitric compounds: {ethanol + pyridine}, {ethanol + aniline}, {ethanol + quinoline}, {pyridine + aniline}, {pyridine+quinoline},{aniline+quinoline}, {N-methylformamide {NMF}+pyridine}, {NMF+aniline}, {NMF+quinoline}, {N,N-dimethylformamide (DMF)+ pyridine}, {DMF+aniline} and {DMF+ quinoline}. The deviations in molar refractivity (Delta R) at 298.15K are also reported for binary systems: {ethanol + pyridine}, {ethanol + aniline}. {NMF + pyridine}, {NMF + aniline}. {DMF + pyridine}, {DMF + aniline} and {pyridine +aniline}. The determined V-E and Delta R were correlated with the Redlich-Kister equation. In addition, the ternary V-E data at 298.15 K were predicted with correlated binary parameters for the systems: {ethanol+pyridine +aniline}, {ethanol+pyridine +quinoline}, {ethanol+aniline + quinoline}, {NMF+pyridine +aniline}. {NMF+pyridine+quinoline}, {NMF+aniline+quinoline}, {DMF+pyridine+aniline}, {DMF+pyridine +quinoline} and {DMF+aniline +quinoline}. The ternary Delta R data at 298.15K are also predicted for the systems: {ethanol+pyridine +aniline}, {NMF+ pyridine +aniline} and {DMF+pyridine 4-aniline}. (C) 2010 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.