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[Chemical Knowledge]：What are the upstream raw materials for sodium carbonate? What do the downstream products contain?

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Sodium carbonate, also known as soda ash, is a very important inorganic chemical raw material, widely used in glass, soap and detergent, food, metallurgy, medicine and other fields. The following are the upstream and downstream related products of sodium carbonate in the field of chemical production raw materials.

upstream products:

1. Salt: Salt is one of the main raw materials for the production of sodium carbonate. Soda ash can be produced through processes such as brine refining, absorption, and evaporation.

2. Limestone: In the production process, limestone is used as an absorbent to react with impurities in the brine to form a precipitate, thereby purifying the brine.

3. Ammonia: In the production of ammonia alkali, ammonia is used as a catalyst to promote the formation of sodium carbonate.

downstream products:

1. Glass: Sodium carbonate is one of the main raw materials for glass production. It melts with quartz sand, limestone and other raw materials to form glass.

2. Soaps and detergents: Sodium carbonate can be used to produce soaps and detergents because it has a decontaminating and emulsifying effect.

3. Food: Sodium carbonate can be used to produce food additives, such as starter in pasta, pastries, etc., and to adjust the pH of food.

4. Metallurgy: In the metallurgical industry, sodium carbonate can be used as a flux to extract metals.

5. Medicine: Sodium carbonate can be used in the production of certain drugs, such as sodium bicarbonate for the treatment of excessive gastric acid.

In short, sodium carbonate has a wide range of applications in the field of chemical production raw materials, and its upstream and downstream related products cover many fields, such as glass, soap and detergents, food, metallurgy and medicine.

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