Disodium bisulfite is a kind of strong reducing agent, which has a wide range of applications: 1. It is widely used in textile industry as reducing agent for vat dyeing, reducing bleaching agent, printing aid for vat dyes, refining and bleaching agent for silk, stripping agent for dyes and cleaning agent for dyeing vat, etc; 2. It is widely used in paper industry as bleaching agent for mechanical pulp, thermomechanical pulp and deinked pulp. It is the most suitable bleaching agent for wood pulp papermaking; 3. As a reducing bleaching agent, it is widely used in the bleaching of kaolin, fur, bamboo and straw products; 4. It is used in mineral processing, synthesis of thiourea and sulfide, etc; 5. It is used as reducing agent in chemical industry; 6. Food additive grade is mainly used in food industry, widely used in preserves, dried fruits, dried vegetables, vermicelli, grapes.
Manufacturing
