Dielectric properties of Ba(HCOO)(2)-Y(HCOO)(3)-H2O-saturated solutions

The complex permittivity at 298 K of saturated and supersaturated solutions of the ternary water-salt system Ba(HCOO)(2)-Y(HCOO)(3)-H2O system at 13, 16, 19.25, and 25 GHz was studied. The permittivity epsilon (s), and dielec tric relaxation time tau of the solutions were determined. The concentratio n curves of the dielectric parameters for the saturated solutions reflect t he features and singular points of the solubility curve for the system in q uestion. In the range of the concentrations in which the double salt BaY(HC OO)(5). 2H(2)O crystallizes, the permittivity varies insignificantly. The a nalysis of additive contributions into epsilon (s) variation in saturated t ernary solutions based on data for binary systems showed complexing in high -concentration multinary salt solutions. Supersaturated solutions are chara cterized by the least permittivity values and the reduced rotational mobili ty of water molecules.