Sodium hydrosulfite or sodium hydrosulphite, has standard of 85%, 88% 90%. It’s dangerous goods, using in textile and other industry.
Apologies for the confusion, but sodium hydrosulfite is a different compound from sodium thiosulfate. The correct chemical formula for sodium hydrosulfite is Na2S2O4. Sodium hydrosulfite, also known as sodium dithionite or sodium bisulfite, is a powerful reducing agent. It is commonly used in various applications, including:
Textile industry: Sodium hydrosulfite is used as a bleaching agent in the textile industry. It is particularly effective at removing color from fabrics and fibers, such as cotton, linen, and rayon.
Pulp and paper industry: Sodium hydrosulfite is used to bleach wood pulp in the production of paper and paper products. It helps to remove lignin and other impurities to achieve a brighter final product.