Anhydrous sodium sulfite is a kind of milky white powder, has no peculiar smell, and is easy to dissolve in water. Anhydrous sodium sulfite has a wide range of chemical uses, such as being an oxidant. Some materials are prone to oxidation and are very sensitive to oxygen. At this moment Anhydrous sodium sulfite can be used for protection to prevent raw materials from being oxidized by air. In addition, anhydrous sodium sulfite is also used as an anti-aging agent and neutralizer.
The main application of anhydrous sodium sulfite
1. Sewage treatment: It is mainly used for the treatment of electroplating wastewater, power plant sewage, chemical wastewater, domestic water, etc., and as an oxygen scavenger and dechlorination agent for heating furnace power supply.
2. Printing and dyeing industry: as an oxygen scavenger and bleaching agent, it is mainly used in the scouring of various knitted fabrics, which can prevent the cotton fiber part from affecting the fiber strength and increase the fineness of the scouring product .
3. Chemical industry: In the organic chemical industry, it can avoid the air oxidation of semi-finished products in the reaction process, so as to protect the oxygen Sensitive raw materials; in inorganic chemical plants, cellulose sulfite, etc.
4. Papermaking industry: It is used to dissolve lignocellulose in wood pulp and be used as a lignocellulose remover.
5. Pharmaceutical industry: It is an intermediate raw material for the production of Analgin and Analgin, etc.
6. Food enterprises: as an oxidant, additive, and vegetable preservative when dehydrating vegetables to prevent green pigment from mildew and yellowing in vegetables and fruits; it has the effect of bleaching agent on food and antimycin in plant food. With obvious antagonistic effect, it is also mainly used in food preservatives, loosening agents, antioxidants, etc.
7. Photographic industry: the purpose is to use it as a film developer.
8. Electronics industry: used to produce photoresistors.
9. Cotton textile: as a thickener for synthetic fibers.
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