... A.S. No.: 1310-73-2Trade Name: Caustic Soda, Dry, Solid, FlakeSynonyms: Caustic Soda, Dry, Sodium Hydroxide, Flake NaOHChemical Formula: NAOHChemical ... Hazard Guide: #154D.O.T. Shipping Name: Sodium Hydroxide, Dry, Solid, FlakeD.O.T. Hazard Class: 8Placard: UN 18232. Ingredients and ... Volatile by Volume: Non-volatile at room temperature.Evaporation Rate: Solid.Solubility in Water: At 20=52.8% by weight. ...