Europium(III) can be effectively extracted into variety of solvents from aqueous nitrate solutions containing HMPTA. The species extracted from LiNO3solutions into benzene or nitrobenzene was found to be Eu(NO3)3.3 HMPTA. The extraction of Bu(III) is further enhanced by other organic solvents miscible with water. In presence of TBP a weak synergism is observed due to the formation of mixed solvates Bu(NO3)3. (HMPTA)3-1(TBP)1.