Extraction of Sr2+ has been carried out with dicyclohexano-18-crown-6 (DC18C6) in benzene from varying HNO3 concentrations, and the nature of species extracted has been established. The equilibrium constant values for the formation of Sr(NO3)2 DC18C6 have been evaluated, taking into account the aqueous complexing of Sr2+ with NO3– and with aqueoussoluble DC18C6, and also the uptake of HNO3 by DC18C6 in the organic phase. Effect of diluents apart from benzene, such as chlorobenzene, dichloroethane, chloroform, 1-octanol, carbon-tetrachloride, and nitrobenzene, and various mixtures of benzene and nitrobenzene on the extraction of Sr2+ with DC18C6 has also been studied. On the practical side, the extraction of Sr2+ has been examined with DC18C6 in solvent mixtures of tri-n-butyl phosphate (TBP), dodecane, and 1-octanol. This solvent mixture, at least partially, avoids the disadvantages envisaged while using 1-octanol alone for the separation and recovery of Sr2+ from minor actinide depleted TRUEX process raffinate.