1,99% Purity sodium hydroxide (Flakes/Solid/Pearls) 2,water treatment,paper making, soap making, textiles, printing,etc Caustic Soda FlakesProduct name: Caustic Soda Flake/Solid/PearlCAS No ... , chemical fiber, pesticides, petro-chemical, medical and food industries.Specification: ItemsSuper GradeStandard grade.Sodium Hydroxide %≥99.599.0Sodium Carbonate%≤0.50.8Sodium ...