A review, with 59 refs., of phase equil. in binary and ternary systems of HO(CH(2))(2) Me(2)RNX salts (R = Et, Pr, Bu, C(6)H(5). X = Br, BF(4), PF(6), N(CN)(2)) as well as (C(10)H(21))(2) Me(2)N and PhCH(2) Me(2)RN (R = C(12)H(25), C(14)H(29)) nitrates. The sp. extn. was proposed on nano-Al(2)O(3). The activity coeffs. at infinite an, were discussed.