... Purity: 96%-99% 1. Product: Caustic soda flakes 2. Appearance: white flakes 3. Grade: Industrial Grade 4. Purity: 96%- ... Number: 99,96Appearance: flakesColor: whiteContent: 96%,99% prills: sodium hydroxide Packaging Detail:25kg/bag , waterproof packing ,2 PE ... 99,96Appearance: flakesColor: whiteContent: 96%,99%pearls: solidprills: sodium hydroxide Packaging Detail:25kg/bag , waterproof packing ,2 PE ...