Uses: 1) used as reagents, because it has a strong moisture absorption, can also be used as basic desiccant.
2) The paper, aluminum smelting, refining tungsten, artificial silk, rayon and soap manufacturing
3) in the production of dyes, plastics, pharmaceutical and organic intermediates, the old rubber recycling, metal sodium, water electrolysis, as well as inorganic salt production, Preparation of borax, chromium salts, manganese salts, phosphate, etc., but also the use of a large number of caustic soda.