... , a white powder, small round or granular crystal ball. potassium carbonateProperties:Is tasted, containing K2O 68.12%, its appearance is ... above nor decomposition.Use:Potash is mainly used to produce potassium glass, potash soap and other inorganic chemicals, and for ... 0.03%max. 0.03%max.0.2%max. Sulphate(K2SO4) 0.01%max. 0.04%max.0.04%max.0 ... Burning 0.6max.0.8max.0.8max.1.0max Potassium carbonate