Investigation of corrosion inhibition effect of 3-[(2-hydroxy-benzylidene)-amino]-2-thioxo-thiazolidin-4-one on corrosion of mild steel in the acidic medium

► 3-[(2-hydroxy-benzylidene)-amino]-2-thioxo-thiazolidin-4-one has good inhibition effect. ► Rp increases with increase in concentration and decreases with longer exposure periods. ► Examined Schiff base acted as a mixed-type inhibitor and obeyed Langmuir's isotherm.