The various thermodynamic parameters such as Sharma parameter (So), Huggins parameter (F), reduced volume (V~), reduced compressibility (V~C1), etc. are studied for the homologues series of 4-(hexyloxybenzylidene)-4′alkoxy anilines, 6O·Om liquid crystalline (LC) compounds with m=4 to 10 by employing thermal expansion coefficient obtained from density variation with temperature in isotropic and liquid crystalline phases. In addition to these, molecular radius (from refractive index) and the Beyer's non linearity parameter, B/A are estimated. All the parameters are in agreement with the other reported liquid crystalline compounds, liquids and polymers and the data obtained is compared with the literature data available.