... 4.free sample high purity Sodium hydroxide 1.DescriptionSodium Hydroxide (NaOH), also known as Iye and caustic soda, is a caustic metallic base. It is used ... perforating. Purely solid caustic soda is white, there is massive, flakes, solid, and granular. 2.ApplicationThe use of sodium hydroxide and alkaline desiccant, paper ...