Sodium metasilicate is used in fireproofing mixtures; in laundry, dairy, metal, and floor cleaning; in deinking recycled paper products in the pulp and paper industry; in washing carbonated drink bottles; in insecticides, fungicides, and antimicrobial compounds; and as a chemical intermediate for silica gel catalysts, an additive in soaps and synthetic detergents, an ingredient in adhesives, a bleaching aid, and a boiler compound.