The changes for the surface tension of this derivative of beta-cyclodextrin (beta-CD) at a pH between 4 and 10 and a temperature of 298.15 K and its solubilities at temperatures between (273.15 and 353.15) K were investigated. The results of these studies show that the minimum value, 40.5 mN.m(-1) for the surface tension of allyl-beta-CD appears in an alkaline environment, that the critical micelle concentration (cmc) is 9.10(-3) mol.L(-1), and that the solubility of allyl-beta-CD increases by at least 50 % compared with that of beta-CD. Finally, according to the analysis with ideal solution model, the optimal solubility model is obtained.