Soda ash is most commonly used for:

Glass manufacturing, reducing the melting temperature of the sand used in glass molding, contributing to the "machinability" or molding of glass products such as tableware and float glass,

Making soaps and detergents, used as wash AIDS or fillers for a smoother surface,

Production of sodium silicate, sodium bicarbonate, sodium percarbonate, sodium chromate, sodium dichromate and other chemicals

Pulp and paper, water treatment, wastewater treatment, metallurgy and pharmaceuticals.