Department of Chemistry, Hemchandracharya North Gujarat University, Patan-384 265, Gujarat, India E-mail: smridhee2000@yahoo.co.in Manuscript received 17 October 2006, revised 9 March 2007, accepted 24 May 2007 Densities and refractive indexes at 303.15, 308.15 and 313.15 K have been experimentally measured for binary liquid mixtures of eucalyptol with methanol, ethanol, n-propanol, n-butanol, iso-butanol over the entire composition range. From the experimentally measured values, refractive index deviations at different temperatures have been computed and fitted to the Redlich-Kister polynomial equation to derive the binary coeflicicnts and standard deviations. Using various relations, refractive indexes of the binary liquid mixtures have been calculated and discussed in terms of average deviations.