Pyrimidine derivatives as potential corrosion inhibitors for steel in acid medium – An overview

• K. Rasheeda^1,2, Vijaya D.P. Alva¹, P.A. Krishnaprasad² and S. Samshuddin³

¹ Department of Chemistry, Shree Devi Institute of Technology, Kenjar, Mangalore, Karnataka, 574142 India
² Department of Civil Engineering, Sri Dharmasthala Manjunatheshwara Institute of Technology, Ujire, Karnataka, 574240 India
³ Department of Chemistry, Sri Dharmasthala Manjunatheshwara Institute of Technology, Ujire, Karnataka, 574240 India

Abstract: Acidic environments are widely used in several industrial operations, such as oil well acidification, acid pickling, acid cleaning and acid descaling, which generally lead to serious metallic corrosion. Despite the relatively limited corrosion resistance of carbon steel, it is widely used in marine applications, chemical processing, petroleum production and refining, construction and metal-processing equipments due to its excellent mechanical properties and low cost. Out of several methods, usage of corrosion inhibitor is one of the most important techniques for controlling the corrosion. Several organic inhibitors have been tried for the corrosion inhibition of steel, out of which organic compounds with more than one hetero-atom containing pi-electrons are found to exhibit high inhibiting properties by providing electrons which interact with metal surface. However, the use of several heterocyclic inhibitors has caused negative effects on the environment because of their toxicity and non-biodegradability. In this context, pyrimidine derivatives are found to attract great interest due to their environmentally benign properties. In this article, it is aimed to review the usefulness of pyrimidine derivatives for the corrosion inhibition of steel in acid medium.

Keywords: pyrimidine; corrosion inhibitor; steel; acid medium

Int. J. Corros. Scale Inhib., 2018, 7, no. 1, 48-61 PDF (903 K)
doi: 10.17675/2305-6894-2018-7-1-5

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