Substituted 4-phenyl-1,2-dithiol-3-thione (PDTT), synthesised and tested as a mild steel corrosion inhibitor in the presence of oxygen by the technique of potentiodynamic polarisation and electrochemical impedance spectroscopy (EIS) in 20% H2SO4 at 25oC. Also at low concentrations, this organic compound prevents acidic corrosion. The results obtained indicate that this...