The functions and applications of sodium hydroxide are:

Sodium hydroxide is primarily used in the papermaking industry, for the production of cellulose pulp, and in the manufacturing of soap, synthetic detergents, and synthetic fatty acids.Refining of animal and vegetable oils and fats. Used in the textile dyeing and printing industry for cotton cloth desizing.Dyes, scouring agents, and silk finishers.

Chemical industry for the production of borax, formic acid, oxalic acid, etc. Petroleum industry for refining...Refine petroleum products for use in oil field drilling mud.Used for producing alumina.Surface treatment for metal zinc and copperGlass, Enamelware, Leatherworking, Dyeing MaterialsIn the pesticide sector.