... and transporting together with acid substances. In the event of a fire, use water as extinguishing agent. Applications: ... breaking-off during welding. It is used to produce food additives like potassium sorbate, monopotassium phosphate, etc. Potassium Carbonate ... s degreasing. In addition, it is also used in manufacture of printing ink, photograph-drug, polyester, explosives, electroplating, tanning, ...