... million tonnes. Sodium hydroxide is a common base in chemical laboratories.Pure sodium hydroxide is a white solid,available in pellets, flakes , granules ... Purely solid caustic soda is white, there is massive, flakes, solid, and granular. 2.ApplicationThe use of sodium hydroxide and ... salt, potassium permanganate, phosphate, etc., but also the use of many of caustic soda 3.Handling and StorageHandling: ...