Steel corrosion resistance with new 2-mercaptopyrimidin-4-ol derivatives

Abdel-Rahman, Adel A.-H.; Aly, Aly Abel-Maaboud; Hassan, Asmaa Said

doi:10.21608/ejchem.2024.310848.10163

Steel corrosion resistance with new 2-mercaptopyrimidin-4-ol derivatives

Document Type : Original Article

Authors

¹ Chemistry Department, Faculty of Science, Menoufia University, Shebin El-Koam, EGYPT.

² Chemistry Department, Faculty of Science, Benha University, Benha, Egypt

³ Department of Chemistry, Faculty of Science, Menoufia University, Shebin El-Koam,

10.21608/ejchem.2024.310848.10163

Abstract

Three six-amino pyrimidine derivative chemicals were recently identified; P(3), 2-mercaptopyrimidin-4-ol, P(5), (E)-6-(benzylideneamino)-2-mercaptopyrimidin-4-ol, and P(6), (E)-Ethyl-2-{[(4-(benzylideneamino)-6-hydroxypyrimidin-2yl) thio]}acetate. FTIR and 1H NMR provided confirmation of the synthesized substance's chemical structure. The newly synthesized cationic pyrimidine derivatives were investigated for their potential as carbon steel corrosion inhibitors in acidic solutions via impedance and potentio-dynamic polarization spectra. The inhibitory efficiencies derived from the several methods used are largely in line with one another. The Tefel findings demonstrated that the compounds effectively prevented carbon steel from corroding under the examined corrosive conditions, with an inhibition efficacy of 78.21, 78.74 and 81.37%, for P(3), P(5) and P(6), respectively. Using the Frumkin isotherm, it was determined that these chemicals' inhibitory impact was related to their adsorption on carbon steel surface. The surface of the carbon steel was inspected with SEM.

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