The aim of this paper is to present a ferroelectric mixture with low eutectic point based on chiral and achiral thioesters. Nine ferroelectric mixtures of two thioesters have been studied by Dielectric Spectroscopy (DS) and Reversal Currents Method (RCM). DS and RCM measurements have been performed on the well aligned mono-domains by means AC electric field. Spontaneous polarization vs. temperature for each concentration has been measured to study the character of the transition between the para- and ferroelectric phases in view of the mean-field theory. The Influence of the chiral dopant on the nature of ferroelectric behaviour was also investigated.