... alkaline aqueous solution with alkali all perforating. Purely solid caustic soda is white, there is massive, flakes, solid, and ... 2%Fe2O3 % ≤0.01% Commodity :Caustic Soda Solid 99% Application:The use of sodium hydroxide and alkaline desiccant, paper, aluminum smelting ... , potassium permanganate, phosphate, etc., but also the use of many of caustic soda. Packing: 200kg iron drums, 25mt/20’fcl. Storage ...