Corrosion inhibitors in near neutral media

In numerous industrial applications, metal and alloys encounter an aqueous environment that includes near-neutral pH and highly saline conditions, for example, seawater. These contact systems include heat exchangers, boilers, desalination plants, cooling systems, etc. The presence of chloride ions in saline environments is highly corrosive that makes metal dissolution. In the near-neutral condition, the primary process of corrosion is oxygen depolarization. Although, the metallic surface is covered with hydroxide or oxide layers that protect metallic corrosion up to a certain extent. However, under certain conditions, these protective layers may dissolve, and corrosion occurs. This chapter deals with the brief description of metallic corrosion and its inhibition in a neutral environment, Corrosion inhibitors used in the near-neutral environment, synthesis of some corrosion inhibitors in a near-neutral environment.