Currently, the price of sodium sulfite on the market typically ranges from 2,000 to 5,000 yuan per ton. The specific price can fluctuate depending on purity, packaging specifications, supplier, and market supply and demand. For example, industrial-grade sodium sulfite is more affordable, around 2,000-3,500 yuan per ton, while food-grade or high-purity sodium sulfite, due to higher requirements for production environment and quality control, can cost 4,000-5,000 yuan per ton or even higher.
From a technical perspective, sodium sulfite (Na₂SO₃) is an inorganic compound produced by the combustion of sulfur to generate sulfur dioxide, which is then reacted with sodium hydroxide solution. It is alkaline in aqueous solution and has strong reducing properties, effectively preventing food oxidation and spoilage, and extending shelf life. Therefore, it is widely used in the food industry as a preservative and bleaching agent. In addition, sodium sulfite is also widely used in the paper, textile, and water treatment industries due to its reducing and bleaching properties.
In terms of applications, sodium sulfite is commonly used in the food industry for preserving wine, dried fruit, and candied fruit; in the paper industry, it is used as a component of cooking liquor to help remove lignin; and in the textile industry, it is used for bleaching fabrics. Different industries have varying quality requirements for sodium sulfite, directly impacting product pricing.
Regarding industry standards, the state has strict regulations on the production and use of sodium sulfite, such as GB/T 6009-2014 "Industrial Anhydrous Sodium Sulfite" and GB 1886.23-2016 "National Food Safety Standard - Food Additives - Sodium Sulfite," ensuring product safety and effectiveness. Suppliers need to consider compliance with these standards and cost control during the production process when setting prices.
Market supply and demand are also key factors influencing prices. When demand exceeds supply, prices may rise; conversely, they may fall. Therefore, monitoring market dynamics and choosing appropriate procurement times are crucial for cost control.
