Alkaline sodium carbonate can be regarded as the product of the neutralization of sodium hydroxide and carbonic acid, and sodium hydroxide is a strong base.

Sodium carbonate is a white, odorless powder or granule at room temperature. It is hygroscopic and gradually absorbs 1mol/L moisture (approximately =15) when exposed to the air. Its hydrates include Na2CO3·H2O, Na2CO3·7H2O and Na2CO3·10H2O.

Sodium carbonate is easily soluble in water and glycerin. At 20°C, every 100 grams of water can dissolve 20 grams of sodium carbonate. The solubility is maximum at 35.4°C. 49.7 grams of sodium carbonate can be dissolved in 100 grams of water. It is slightly soluble in absolute ethanol and insoluble in propanol.

Extended information:

Sodium carbonate is one of the important chemical raw materials and is widely used in light industry and daily chemicals, building materials, chemical industry, food industry, metallurgy, textile, petroleum, and national defense. , medicine and other fields; used as raw materials, cleaning agents, detergents for the manufacture of other chemicals, also in the fields of photography and analysis, metallurgy, textiles, petroleum, national defense, medicine and other industries.

The glass industry is the largest consumer sector of soda ash, consuming 0.2 tons of soda ash per ton of glass. Among the industrial soda ash, it is mainly used in light industry, building materials, and chemical industry, accounting for about 2/3: followed by metallurgy, textiles, petroleum, national defense, pharmaceutical and other industries.