Soda Ash 58% Dense (Sodium Carbonate) is a white powder that is used for manufacturing glass, paper, and detergents. It is used in many industries, including aerospace, glass, pulp and paper, and detergents. Soda Ash 58% Dense is an economic source of carbonate. In glass production it is used as a flux for silica to lower the melting point of the mix. In is also used in water softening to remove magnesium and calcium ions by precipitation.