In this study, the density (ρ), speed of sound (u), and viscosity (η) of the binary liquid mixtures of an industrially important solvent O-Chloroaniline (O-CA) with Formamide (F), N-Methylformamide (NMF) and N,N-Dimethyl formamide (N,N-DMF) have been measured over the entire composition range and From these experimental values, thermo-acoustic parameters like Z, Ks, V, Lf, Vf, i, H and  are calculated at temperatures from T = 303.15, 308.15 and 313.15K at atmospheric pressure. These results were compared with literature values.