... paper, textiles, drinking water,soaps and detergents.Caustic Soda FlakesSynonyms: Sodium hydroxide, Caustic Soda.Chemical Formula: NaOH.CAS NO.: 1310-73-2EINECS ... -185-5Class No.: 8UN NO.: 1823HS Code: 28151100 Specifications:Caustic Soda Flakes 99% MIN.ITEMSTANDARDNAOH:99% MIN.NA2CO3:0.5% MAX ...