Commercially pure or low alloy nickel finds its main application in chemical processing and electronics. Because of pure nickel's corrosion resistance, particularly to various reducing chemicals and especially to caustic alkalis, nickel is used to maintain product quality in many chemical reactions, particularly in the processing of foods and synthetic fibre manufacture.
Nickel is highly resistance to many corrosive media from acid to alkaline. It is extremely high resistance to caustic alkalis including the molten state. It has resistance to mineral acids varies according to temperature and concentration and whether or not the solution is aerated. Corrosion resistance is better in non-aerated acids. In acid, alkaline and neutral salt solutions, Nickel (Alloy 200) shows good resistance.
Equipment made out of Nickel Alloy 200/201 is used in food production, such as the handling of cool brines, fatty acids and fruit juices vessels in which fluorine is generated and reacted with hydrocarbons. It is used in manufacture and handling of sodium hydroxide, particularly at temperatures above 570 deg.F. It is also used in production of viscose rayon and manufacture of soap.