Soda ash. Mainly used in textile, glass, medicine and so on Property: Soda ash is a hygroscopic product, absorbs moisture and carbon dioxide in the air, forming acid salt NaHCO3. It cakes, when stored in the open air. Water solutions of soda ash have a strong alkali reaction. Usages: soda ash is used in the production of different kinds of glass, including crystal, lens, medical glass, glass ...