Potassium carbonate powder is monoclinic crystal, white powder, granular crystal or prill. Potassium carbonate powder is monoclinic crystal, white powder, ... hygroscopicity. It easily cakes and turns into Potassium Bicarbonate through absorbing carbon dioxide when exposed ... to produce food additives like potassium sorbate, monopotassium phosphate, etc. Potassium Carbonate is foliar spray fertilizer ...