... caustic soda flakes (99% 98% 96%), caustic soda pearl/prills (99% 98% 96%), caustic soda solid (99% 98% 96%) and caustic soda liquid/lye/solution (50% 42% 30%).USE: Caustic Soda ... is used in the manufacturing of cellulose, aluminum, soaps and detergents, synthetic fibers, rayon, cellophane, sodium ... products, cosmetics, in the production of sodium hypochlorite as well as other products for ...