Potassium Carbonate in Granule Form is available with a Max. 5.0 Iron as Fe, ppm. Sree Rayalaseema Alkalies and Allied Chemicals Ltd. Manufactures Potassium Carbonate in Granule Form. Sree Rayalaseema Alkalies and Allied Chemicals Ltd. Also manufactures Castor Derivatives. Is mixed with distilled water to make a safer electrolyte for oxyhydrogen production than potassium hydroxide, the most commonly used electrolyte. It is being used as the electrolyte in many cold fusion experiments. It is also used as a fire suppressant in extinguishing deep fat fryers and various other B class related fires.