Soda ash (Sodium Carbonate) Na2CO3 99.8+% Soda Ash, 0.2% Water * May be used for water softening, making glass, regulating pH levels * Excellent base for cleaning up chemical spills, oil absorbant * Works great in homemade laundry detergents and dish washing * Used as a relatively strong base for various settings. May be used in pools to neutralize chlorine.