Potassium Metabisulfite

Potassium metabisulfite is a white crystalline powder with the chemical formula K2S2O5. It is commonly used as a food preservative, antioxidant, and disinfectant. Potassium metabisulfite works by releasing sulfur dioxide gas, which helps to prevent the growth of bacteria and other harmful microorganisms in food and other applications.

In food preservation, potassium metabisulfite is often used to prevent discoloration and spoilage caused by oxidation. It can also be used to inhibit the growth of yeasts and molds in wine and beer production. In addition, it can act as a reducing agent to maintain the color and flavor of some fruits and vegetables.

Potassium metabisulfite can also be used as a disinfectant. When mixed with water, it releases sulfur dioxide gas, which has antimicrobial properties. It can be used to sanitize equipment and surfaces in food processing facilities and wineries.

It is important to handle potassium metabisulfite with care as it can cause skin and eye irritation, and can release toxic fumes when heated or mixed with acidic substances. It should be stored in a cool, dry place away from heat and moisture.