Potassium carbonate (chemical formula: K2CO3), a kind of inorganic compounds, also known as potash. It is colorless crystal or white granular, and has high thermal stability which is heated to 1000? decomposition. Potassium carbonate is easy deliquescence and soluble in water, but cannot be soluble in ether and ethanol. It also has strong moisture absorption, and it is easy to agglomerate when long-term contact with air, easy to absorb carbon dioxide from potassium bicarbonate.