Sodium metabisulfite Food Grade is a widely used preservative and additive. Its composition mainly consists of sodium metabisulfite, water and trace impurities. As a white crystalline powder, sodium metabisulfite can suppress microorganisms including bacteria, molds and yeasts, effectively extending the shelf life of food.
Sodium metabisulfite, the sodium salt of metabisulfurous acid, is an inorganic chemical compound commonly applied as both a preservative and bleaching agent. It is produced through the oxidation of sulfur and widely utilized across food processing, brewing, pharmaceutical and other industries. Within food processing, it preserves the freshness and quality of food and prolongs their storage life.