... , High quality , Good price with good reputation Caustic Soda, Pearls or Flakes:Parameter SpecificationNaOH 99.0%MinNa2CO3 0. ... Thin flake with high transparency. Such characteristics make Caustic Soda Flakes dissolve very fast. Micro Pearls Characteristics:Its appearance ... It is also called caustic soda pearls, caustic soda prills, or caustic soda pellets, etc. Caustic soda pearls usually dissolve 2 or ...