... in papermaking, smelting aluminium and tungsten, rayon and soap manufacturing,wastewater treatment, electroplating, chemical engineering drilling.Besides, ... , plastic, agents and organic intermediates, regeneration of old rubbers, the production of sodium metal, inorganic salt , chromate, manganese ... , phosphate, etc, are also using a lot of Potassium hydroxide. 4.Storage Potassium hydroxide should be ...