Preparation and Investigation of Some New Pyrazole Derivatives as Corrosion Inhibitors for Mild Steel in Acidic Media.

  • Zahraa Talib Khudhair Department of Chemistry, College of Science, Al-Nahrain University, Baghdad-Iraq.
  • Mehdi Salih Shihab Department of Chemistry, College of Science, Al-Nahrain University, Baghdad-Iraq.
Keywords: pyrazole derivatives, weight loss method, corrosion inhibition efficiency

Abstract

Preparation of some new pyrazole derivatives by using a few steps starting from 4-acetylaniline to prepare azo compound (3). Chalcone derivatives (A1-A3) were obtained by reaction compound (3) with a proper aldehyde(benzaldehyde,4-(N,N-dimethylamino) benzaldehyde, terephalaldehyde). Chalcone derivatives (A1-A3) reacted with a proper hydrazine (hydrazine hydrate, phenyl hydrazine) to yield pyrazole derivatives (B1, B2, B3, B4, B5, B6). All prepared structure compounds were confirmed using spectroscopic and1H-NMR techniques. Prepared compounds (B1, B2, B3, B4, B5, B6) were successfully applied as organic corrosion inhibitors for mild steel in 1M H2SO4 solution at 30oC by using a weight loss method. The results of weight loss measurements showed that corrosion inhibition efficiency by increasing the concentration of organic inhibitors for mild steel in 1M H2SO4 solution at 30oC.

Published
2018-05-28
How to Cite
Khudhair, Z. T., & Shihab, M. S. (2018). Preparation and Investigation of Some New Pyrazole Derivatives as Corrosion Inhibitors for Mild Steel in Acidic Media. Al-Nahrain Journal of Science, 19(2), 33-42. Retrieved from https://anjs.edu.iq/index.php/anjs/article/view/225
Section
Articles