Sodium metabisulfite, smbs Uses: 1> Can be used as a mordant for printing and dyeing, a dechlorinating agent after fabric bleaching, and a bleaching agent for paper fibers; 2> Reducing agent and sulfonating agent for chemical and pharmaceutical use, and a non-ferrous metal beneficiation agent; 3> Sterilization and preservative agent for food preservation, brewing industry, and beverages; 4> Wastewater treatment agent; leather treatment agent for the tanning industry; 5> Rubber coagulant, etc.
