1 production of paper pulp and cellulose pulp;

2 used in the production of soaps, synthetic detergents, synthetic fatty acids, and animal and vegetable fats and oils.

3 textile printing and dyeing industry used as desizing agent, scouring agent and mercerizing agent.

4 chemical industry for the production of borax, sodium cyanide, oxalic acid, phenol, etc..

5 the oil industry is used for refining petroleum products and used in drilling mud. Also used in the production of alumina, metal zinc and copper surface treatment and glass, enamel, leather, medicine, dyes and pesticides.

6 food grade products used in the food industry as acid neutralizing agent, can be used as citrus, peach and other peeling agent, can also be used as empty bottles, cans and other containers of detergents, as well as decoloring agent, deodorant.

7 can also be used as alkaline desiccant. Caustic soda is widely used in the national economy, and many industrial departments need caustic soda. Most of the use of caustic soda is the manufacture of chemicals, followed by paper, aluminum, tungsten, rayon, rayon and soap manufacturing. In addition, in the production of dyes, plastics, pharmaceutical and organic intermediates, old rubber regeneration, metal sodium, the electrolysis of water and inorganic salt production, preparation of borax, chromium salt, manganese salt, phosphate, also want to use a lot of caustic soda.