Sodium nitrite (food grade), also known as nitrite, is an inorganic nitrite with the chemical formula NANO₂ and a relative molecular weight of 69.00.Food-grade sodium nitrite is odorless, slightly salty and bitter in taste. The substance is a white or slightly light yellow crystalline powder. Common forms include powdered and granular, with no obvious odor, easy moisture absorption and agglomeration, and excellent solubility.It is soluble in water and liquid ammonia, slightly soluble in ethanol, methanol, and diethyl ether. The aqueous solution is alkaline with a pH value of about 8.5-9.5. It has excellent anticorrosive properties, color and flavor. It can strongly inhibit the reproduction of botulinum toxin (the bacteria is difficult to inactivate by high-pressure cooking), promote the formation of bright colors in meat products and give unique cured bacon flavor. It is an irreplaceable food additive in the processing of meat products.It is easy to oxidize in the air. It melts when heated to 271℃. If it continues to be heated to above 320℃, it will decompose and produce toxic gases. It needs to be sealed and stored in a cool and dry place, away from high temperature, open flame, acidic substances and reducing substances to prevent oxidation, decomposition and deterioration.In food processing, it is mainly used for anticorrosive, hair color, and flavor enhancement of meat products. At the same time, it can be used in food additives, pharmaceutical excipients, chemical raw materials and other fields. It is used as a preservative, hair color agent, and reducing agent. It is also used in meat processing, pharmaceutical synthesis, printing and dyeing and other processes.Its functions are both color protection, anticorrosion and flavor enhancement. Although it is toxic, it is completely safe to use within a limited dose. It strictly complies with the standards for the use of food additives. It is one of the indispensable special additives in the food processing industry. It fits the current development trend of “total volume growth, structural optimization, and safety upgrading” in the sodium nitrite industry.

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Application Description

1. It is used as a preservative, hair color agent, and flavor enhancer in the field of food processing. It is mainly used in the processing of meat products such as bacon, sausages, ham, and luncheon meat. It can strongly inhibit the reproduction of harmful microorganisms such as botulinum toxin and extend the shelf life of meat products. At the same time, it promotes the conversion of myoglobin into nitrosyl myoglobin, which makes meat products show a bright rose red color and gives them a unique flavor of cured bacon. Strictly follow the standards for the use of food additives. The maximum amount of meat products is 0.15g/kg, and the residual amount does not exceed 30 mg/kg. It is suitable for the large-scale production of various meat products and can be used with D-isoascorbic acid. Achieve reduction and efficiency.
2. The pharmaceutical industry is used as pharmaceutical excipients and antidotes for the production of antidotes (to prevent cyanide poisoning), antibiotics and other pharmaceutical products. It can be used as an intermediate in drug synthesis to assist in the smooth progress of drug synthesis. At the same time, it can be used for the disinfection of pharmaceutical equipment to meet the high standards of the pharmaceutical industry and meet the growing trend of demand in the pharmaceutical and chemical industry.
3. In the chemical industry, it is used as a chemical raw material and reducing agent for the production of azo dyes, sodium nitrate and other chemical products. At the same time, it can participate in the redox reaction and serve as a reducing agent and bleaching agent for organic synthesis. It is suitable for the upgrading needs of the fine chemical industry. At the same time, it has a small number of applications in high-end fields such as chemical molten salt.
4. It is used as a printing and dyeing aid, mordant, and bleaching agent in the printing and dyeing industry. It is used in the dyeing and finishing process of textiles such as cotton, linen, and chemical fiber. It can adjust the pH of the dye solution, promote uniform coloring of dyes, and improve dyeing fastness. At the same time, it can be used as a bleaching aid to improve the bleaching effect. It is one of the commonly used auxiliary raw materials in the printing and dyeing industry.
5. It is used as a bleaching aid and anti-dyeing agent in the textile industry. It is used in the bleaching and anti-dyeing treatment of textiles. It can improve the uniformity of bleaching, prevent color flowers and color differences in the dyeing process, improve the feel and luster of textiles, adapt to the large-scale production needs of the textile industry, and meet the growth trend of the demand of the printing and dyeing industry.
6. In the agricultural field, it is used as a fertilizer additive and fresh-keeping agent for the production of compound fertilizers, which can supplement the nitrogen in the soil, promote crop growth, and improve crop yield and quality. At the same time, it can be used for fruit and vegetable preservation, inhibit the decay and deterioration of fruits and vegetables, and meet the needs of agricultural modernization.
7. Used as preservatives and bleaching agents in light industry, used in the production of papermaking, leather, daily chemicals and other products, used as paper bleaching agents and preservatives in the paper industry to prevent mildew and yellowing of paper, improve paper whiteness and storage time; used as leather bleaching agents and preservatives in the leather industry to improve leather quality and color; at the same time, it can be used in detergents and other products to improve product decontamination and bleaching properties.
8. It is used as a chemical reagent in the laboratory, as a reducing agent, a reference reagent, and a hair color agent. It is used in experimental operations such as chemical analysis, organic synthesis, and microbial culture. It can also be used to prepare buffers, calibrate experimental instruments, and assist in the smooth progress of various experiments. It is one of the commonly used reagents in the laboratory.