Sodium carbonate is an inorganic compound with chemical formula of Na2CO3 and molecular weight of 105.99. It is also called soda ash, but it belongs to salt, not alkali. It is also called soda ash or alkali ash in international trade.

Sodium carbonate is a white powder, tasteless and odorless, and easily soluble in water. The aqueous solution is strongly alkaline, which will absorb moisture and agglomerate in humid air, and some of it will become sodium bicarbonate.

The preparation methods of sodium carbonate include combined alkali method, ammonia alkali method, Rubin method and so on. , can also be refined with trona. It is an important inorganic chemical raw material, which is mainly used to produce flat glass, glass products and ceramic glaze. It is also widely used in household washing, acid neutralization and food processing.

Application fields of sodium carbonate:

1. The glass industry is the largest source of soda consumption, consuming 0.2 tons of soda per ton of glass. Mainly used in float glass, kinescope glass shell, optical glass, etc.

2, used in chemical industry, metallurgy, etc. The use of heavy soda ash can reduce alkali dust flying, reduce raw material consumption, improve working conditions, improve product quality, reduce the corrosion of alkali powder on refractories and prolong the service life of kiln.

3. As a buffer, neutralizer and dough improver, it can be used for cakes and flour products, and can be used appropriately according to production needs.

4. Used as wool washing agent, bath salt and medicine, and also used as alkaline reagent for tanning.

5. Used as neutralizer and leavening agent in food industry, such as making amino acids, soy sauce, steamed bread, bread and other flour products. It can also be made into alkaline water and added to pasta to increase elasticity and ductility. Sodium carbonate can also be used to produce monosodium glutamate.

6. Special reagent for color TV.

7. Used as antacid and osmotic laxative in pharmaceutical industry.

8. Used for chemical and electrochemical degreasing, chemical copper plating, aluminum etching, electrolytic polishing of aluminum and its alloys, chemical oxidation of aluminum, sealing after phosphating, rust prevention between processes, electrolytic chromium plating and chromium oxide film removal. It is also used for pre-copper plating, steel electroplating and steel alloy electroplating electrolyte.

9. Metallurgical industry is used as flux for smelting and flotation agent for mineral processing, and steelmaking and antimony smelting are used as desulfurizers.

10, used as water softener in printing and dyeing industry.

1 1. Leather industry is used for degreasing, neutralizing chrome tanning and improving the alkalinity of chrome tanning solution in hides.

12, the benchmark of acid calibration in quantitative analysis. Determination of aluminum, sulfur, copper, lead and zinc. Test urine and blood sugar. The cosolvent of silica in cement was analyzed. Metallographic analysis and so on.