Used as a preservative in the wood industry; used as an additive for magnesium and aluminum smelting in the metallurgical industry; used in the glass industry to make potassium glass, optical glass, and opaque glass; used in the pesticide industry to make Chemicalbook and insecticides; in the organic industry Used in the manufacture of intermediates; used as analytical reagents in analytical chemistry; used in the production of anti-corrosion materials in chemical production. It is also used in ceramics and synthetic mica.