eng Ansari Education and Research Society Journal of Ultra Chemistry 0973-3450 2319-8036 June 2008 4 1 27 34 juc 755 article R. T. Vashi 1 S.A. Desai 2 Piyush S. Desai 2 Department of Chemistry, Navyug Science College, Rander Road, SURAT -395009 Gujarat (INDIA) Department of Chemistry, Arts, Science and Commerce College, Kholwad, Kamraj Ghar Rrasta SURAT - 394185 (INDIA) <table border="0" cellpadding="5" cellspacing="0" style="width:100%"> <tbody> <tr> <td> <p style="text-align: justify;">The corrosion of zinc in nitric acid containing toluidines has been studied at different acid concentration, inhibitor concentration and temperature. In acid, corrosion increases with concentration of acid and with temperature. At constant acid concentration, the inhibition efficiency (I.E.) of toluidines increases with concentration. At constant inhibitor concentration, the I.E. increases with the concentration of acid. At 40 mM inhibitor concentration in 0.15 M HNO₃ acid at 301 K for 24 h immersion period, the I.E. decrease in the order :<br /> m-toluidine (90.0%) &gt; p-toluidine (89.7%) &gt; o-toluidine (71.0%). As temperature increases, the rate of corrosion increases, while percentage of inhibition decreases. The mode of inhibition action appears to be chemisorption since the plot of log (q/1-q) versus log C gives straight line which suggest that the inhibitors cover both the anodic and cathodic regions through general adsorption following the Langmuir isotherm. Anodic and cathodic galvanostatic polarization curves show little anodic but significant cathodic polarization.<br /> &nbsp;</p> </td> </tr> <tr> <td> <p>&nbsp;</p> </td> </tr> </tbody> </table> https://journalofchemistry.org/paper/755/ Corrosion Zinc Nitric acid Toludines.