Potassium carbonate (commonly known as potash) is a colorless or white hygroscopic crystalline powder or granule, odorless.It is prone to deliquescence when exposed to humid air and absorbs carbon dioxide to convert into potassium bicarbonate.Its aqueous solution is strongly alkaline (pH ≈ 11.6).It is chemically stable, but can decompose into potassium oxide and carbon dioxide at high temperatures, and reacts violently with acids to release carbon dioxide.

1. Glass industry (accounting for about 70% of consumption): used in the production of optical glass, CRT glass shells, medical glass, etc., as a flux to improve transparency, strength and refractive index.
2. Printing and dyeing industry: used as an auxiliary for vat dyeing and a stripping agent.
3. Daily chemical industry: used in the manufacture of soaps and detergents.
4. Food industry (food grade): used as an acidity regulator, leavening agent (e.g. for pasta, pickled products), and buffer.
5. Pharmaceutical industry: used in the synthesis of potassium salt drugs and pharmaceutical intermediates.
6. Other fields: ceramic glazes, welding electrodes, fertilizers, electroplating, leather, photographic development, decarbonization, etc.