Measurements have been made of the viscoelastic and dielectric properties of benzyl benzoate in the supercooled state. From the results the values of the viscoelastic retardation time, τr, the relaxation time, τm, and the dielectric relaxation time τD, have been determined. These times are compared with the relaxation time τc, obtained from investigations of the depolarised doublet of scattered light. The retardational modulus, Gr, and the infinite frequency shear modulus, G∞, are also compared with the modulus, µ∞ from light scattering experiments. It is shown that τc and µ∞ are similar to (or possibly identical to), the retardation properties τr and Gr respectively, and not to the relaxational time τm and G∞. In the low viscosity region τD= 5.5 τm and τc= 11 τm. In the supercooled region τr= 182 τm, τD= 11 τm, and the dielectric and retardational properties are described by Davidson–Cole equations each with the time distribution parameter β= 0.5.