New derivative of 1,2-Dihydropyridine-3-Carbonitrile as Corrosion Inhibitor

Abstract

Abstract New 1,2-dihydropyridine-3-carbonitrile derivative compound as corrosion inhibitor namely, 3,3’-(3,3’-(1E,1‘E)-1,4-phenylenebis(diazene-2,1-diyl)bis(4-(dimethylamino)-3,1-phenylene))bis(2-oxo-6-(2,4,6-trihydroxyphenyl)-1,2-dihydropyridine-3-carbonitrile) (PDPTD) was synthesized by cyclization of compound (1) with 1-(2,4,6-trihydroxyphenyl) ethenone in presence of ethyl cyano acetate and ammonium acetate. The new synthesized compound has been characterized using Melting point, FT-IR spectroscopy and 1H-NMR. The new synthesized compound (PDPTD) has been tested on mild steel (MS) in 1 M HCl media by a weight loss method and identification of the surface technique employed by scanning electron microscope (SEM) studies. The weight loss investigation demonstrated that inhibition performances have been improved via concentration raising of inhibitor. To support our results scanning electron microscopy has employed about clarify the surface from the MS with and without (PDPTD) in 1.0 M HCl media. The inhibition performance rate was 83% at the maximum utilized concentration of (PDPTD).