32% sodium hydroxide solution is prepared by ion exchange method. Sodium hydroxide is an important basic chemical raw material, which is widely used in the production of formic acid, oxalic acid, borax, phenol, soap, synthetic fatty acid, synthetic detergent and so on. It can also be used as desizing agent, scouring agent, mercerizing agent and solvent of vat dye and navy blue dye in textile printing and dyeing industry. It can be used to manufacture aluminum hydroxide, aluminum oxide and metal surface treatment agent in smelting industry. The instrument industry is used as acid neutralizer, decolorizer and deodorizer. The adhesive industry is used as starch paste and neutralizer.
In addition, sodium hydroxide also widely used in enamel, cosmetics, leather making, coatings, pesticides, glass and other industries.