Critical micelle concentration (CMC) of sodium dodecylbenzene sulfonate (SDBS) in the aqueous-rich region of monohydric alcohols has been determined by conductance measurements and the effect of temperature was observed. Thermodynamic parameters of micellization, enthalpy (Delta H degrees m), entropy (Delta S degrees m), and free energy (Delta G degrees m) were calculated from temperature dependence of CMC. In all cases the negative value of Delta H degrees m decreases with increase in concentration, whereas Delta S degrees m values are positive and show increasing trend with increase in concentration. Delta G degrees m < 0 and remained practically constant over the entire alcohol composition range studied. Further, FT-IR studies suggest that the peak values of O-H and -C=C- stretching are considerable in hydrophobic alcohols. The results obtained are analyzed in terms of the effect of chain length of alcohols on micellization of SDBS molecules.