Single-crystal of Cr-doped ferroelectric Ba5Ti2O7Cl4 was synthesized with BaCl2 as a flux by a high temperature solution growth technique. X-ray diffraction studies of the crystal refers to a single phase with an orthorhombic structure. All the parameters of dielectric properties were studied with varying temperature describe the electronic behavior of doped Ba5Ti2O7Cl4, single crystal which was confirmed by thermal analysis of the DTA curve. The measured loss tangent of the crystal, which is in good agreement with the dielectric studies. The ferroelectric property of the crystal was confirmed by studying the hysteresis loop. In this study, several parameters, like the coercive field and spontaneous polarization, were measured and calculated.