Excess volume (V-E), isentropic compressibility (k(s)) and excess isentropic compressibility (k(s)(E)) for the binary mixtures of o-chlorotoluene with 1-propanol, 1-butanol, 1-pentanol, 1-hexanol and 1-heptanol over the temperature range from (298.15 to 308.15) K and at atmospheric pressure were derived from experimental density (rho) and speed of sound (u) data. The measured excess properties were correlated with the Redlich-Kister polynomial equation. The calculated excess properties are discussed in terms of molecular interactions between o-chlorotoluene and 1-alkanol molecules and also with Fourier transform infrared (FT-IR) spectroscopy. (c) 2013 Elsevier Ltd. All rights reserved.