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Pyrazole Methyl Substituted Compound used as a Corrosive Inhibitor for Mild Steel in Acidic Environment

Author Affiliations

  • 1Department of Chemistry, Karpagam University, Coimbatore, 21, INDIA

Res.J.chem.sci., Volume 5, Issue (5), Pages 1-12, May,18 (2015)


The inhibitive effect of compound on mild steel in 1M H2SO4 and 1M HCl was investicated by weight loss, Potentiodynamic polarization and electro chemical impedence studies. The synthesized compound of 1-acetyl-4,5-dihydro-5-phenyl-3-(thiophen-2yl) pyrazoles was characterized by FTIR, 1H NMR, 13C NMR. The structure are also elucidated and purity confirmed by TLC. The corrosion inhibition rate was increased in increasing the concentration of our synthesized inhibitor (1-acetyl-4, 5-dihydro-5-methyl phenyl-3-(thiophen-2yl) pyrazoles). The synergetic effect also studied and observed good correlation between halides and our inhibitor. The adsorption isotherm was also confirmed by langumuir adsorption isotherm.


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