Description
It is used as a preservative, bleaching agent and bulking agent in food processing. Industrially, sodium metabisulfite is used in printing and dyeing, organic synthesis, printing, tanning, pharmaceutical and other departments; sodium metabisulfite is used in chemical industry, pharmaceutical industry for the production of hydrosulfite, sulfamethazine, analgin, caprolactam, etc. as well as chloroform, phenylpropyl sulfone and purification of benzaldehyde. The photographic industry is used as a fixer ingredient. Fragrance industry for the production of vanillin. Used as preservative in brewing industry, rubber coagulant and dechlorination agent after bleaching of cotton. Organic intermediates, dyes, and leather are used as reducing agents for electroplating, wastewater treatment in oil fields, and as mineral processing agents in mines, etc.
