... electro tube, TV kinescope, computer display. Potassium Carbonate is used as raw materials in manufacturing electro tube ... like potassium sorbate, monopotassium phosphate, etc. Potassium Carbonate is foliar spray fertilizer and a constituent of compound ... it is also used in manufacture of printing ink, photograph-drug, polyester, explosives, electroplating, tanning, ceramic, building materials, ...