Sodium hydroxide has a wide range of uses. In chemical experiments, in addition to being used as a reagent, it can also be used as an alkaline desiccant due to its strong hygroscopicity. Caustic soda is widely used in the national economy and is needed by many industrial sectors. The sector that uses the most caustic soda is the manufacture of chemical drugs, followed by papermaking, aluminum smelting, tungsten smelting, rayon, artificial cotton and soap manufacturing. In addition, a large amount of caustic soda is also used in the production of dyes, plastics, pharmaceuticals and organic intermediates, the recycling of old rubber, the production of metallic sodium, the electrolysis of water, and the production of inorganic salts, and the production of borax, chromium salts, manganates, phosphates, etc. In industry, sodium hydroxide is usually called caustic soda, or caustic soda, or caustic soda.
