Anhydrous sodium sulfite is one of the more mature inorganic chemical products in the inorganic salt industry and is used in many industries. We will list some of the industrial applications of anhydrous sodium sulfite.

1. Paper industry
The paper industry is the industry that consumes the most sodium sulfite products. The cooking of plant fiber raw materials with sodium sulfite cooking solution under certain temperature and pressure is one of the important pulping methods in paper industry, especially for non-wood materials.
With the continuous development of the paper industry, secondary fiber recycling received the attention of the paper industry, not only to save costs, but also to save Mori resources in favor of environmental protection. Sodium sulfite is a good performance deinking additives, in the deinking of its role is to prevent the return of yellow pulp, and weak alkaline conditions for sodium sulfite deinking for ink removal more favorable.

2. Waste water treatment (click to see the contents of the water treatment page)
Boiler feed water needs to be deoxidized, and sodium sulfite reduction treatment method is the most environmentally friendly of the current chromium-containing wastewater treatment process
energy-saving method.

3. Chemical industry
Sodium sulfite is widely used in the chemical industry as a raw material or auxiliary. The boiling reaction of sodium sulfite with sulfur is one of the main methods to produce sodium thiosulfate. The sodium sulfite method is one of the internationally recognized mature and reliable refining methods for the industrialization of TNT. Sodium sulfite is widely used as a sulfonating agent in the synthesis of fine chemicals. Sodium sulfite is compounded with other corrosion inhibitors, which can greatly improve the corrosion inhibition effect.

4. Food industry (click to see the content of the food industry page)
Sodium sulfite is a widely used food additive, which can be used as bleaching agent, preservative, relaxing agent, antioxidant, color preservative and freshness preservative in food processing.

5. Metallurgical industry
Sodium sulfite is widely used as inhibitor in ore dressing. Zinc sulfate + sodium sulfite (molar ratio 1:1) is an efficient inhibitor for iron sphalerite. It enables successful and effective separation of lead and zinc minerals, and it can reduce pollution and protect the ecological environment. Mixed copper-lead concentrates use a combination of potassium dichromate and sodium sulfite as inhibitors.

6. Printing and dyeing industry
Sodium sulfite is used as deoxidizer and bleaching agent in the printing and dyeing industry, used in the cooking of various cotton fabrics, which can prevent cotton fiber from affecting fiber strength and improve whiteness; it can make impurities such as protein and pectin decompose and dissolve in the alkali solution, which is particularly effective in removing impurities from low-grade cotton containing more impurities.

7. Tanning industry
Sodium sulfite is an important auxiliary in tanning industry, used in leather treatment, can make leather soft, plump, tough, with waterproof, folding resistance, wear resistance and other properties.

8. Photographic industry
Sodium sulfite is an indispensable developer and fixing agent for the photosensitive industry, used in the process of developing, it acts as a preservative for the final image.
9. Pharmaceuticals (click to see the contents of the pharmaceutical industry page)
It can be used in the synthesis of certain APIs.

10. Oilfield industry
As a deoxidizer for oilfield oil recovery and water injection.

Bergano Chemicals is one of the largest sodium sulfite chemical plants in northern China. We have an annual production capacity of 50,000 tons of sodium sulfite and can provide food grade, industrial grade and high purity grade. We will provide you with high quality products with competitive price.