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 ... .: 1310-73-2Molecular Weight: 40.00 Molecular Formula: NaOHAppearance: White flakes, solid, pearl.UseMainly ...