POTASSIUM METABISULFATE Chemical compatibility with O-rings, rubbers, & plastics

Potassium metabisulfate (K2S2O5) is a white, crystalline powder used as a preservative and antioxidant in food and beverages, particularly in winemaking and brewing. It is also employed in chemical synthesis, water treatment, and as a laboratory reagent. Potassium metabisulfate can cause skin and eye irritation upon contact and respiratory discomfort if inhaled. Proper handling requires the use of protective equipment such as gloves and goggles. Storage should be in a cool, dry place, away from incompatible substances like strong acids. Disposal must follow local regulations to prevent environmental contamination. Potassium metabisulfate is valued for its preservative and antioxidant properties, making it a useful additive in food, beverage, and industrial applications.

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