... : 2. Timely delivery: 3. Honesty and realiable. Caustic Soda Pearls Specification:1)Synonyms: Sodium hydroxide, Caustic Soda.2)Chemical Formula: NaOH.3)Class No ... .: 84)UN NO.: 18235)HS Code: 28151100Specifications chart: Caustic Soda Pearls 99% MIN.ITEMSTANDARDNAOH:99% MIN.NA2CO3:0.5% MAX ... , Food preparation and used as Paint stripper, Gold pennies, etc. Caustic Soda Pearls 99%