... sodium hydroxide is a white solid,available in pellets, flakes , granules and as a 50% saturated solution. It is hygroscopic ... flakes, solid, and granular. 2.ApplicationThe use of sodium hydroxide and alkaline desiccant, paper, aluminum smelting, refining ... metallic sodium, water electrolysis, as well as inorganic salt production, preparation of borax, chromium salt, potassium permanganate, phosphate, ...