Sodium Metabisulfite
Description
Sodium metabisulfite is used in water treatment oxygen scavenging and environmental chemical processing.
Core Functions and Applications
- Food & Beverage Preservative: Identified as additive E223, it prevents browning in dried fruits, juices, and potato products. It is essential in winemaking and brewing to inhibit the growth of wild yeast and bacteria.
- Disinfectant & Sanitizer: When dissolved in water, it releases sulfur dioxide gas, making it a powerful sanitizer for brewing equipment, bottles, and hoses.
- Water Treatment: Used to neutralize residual chlorine and chloramines in tap water and municipal wastewater.
- Industrial & Chemical Uses:
- Mining: Acts as a reducing agent to precipitate gold from aqua regia solutions.
- Textile & Paper: Functions as a bleaching agent and dechlorination agent after dyeing processes.
- Pharmaceuticals: Used as an antioxidant in medications like adrenaline to extend shelf life.
- Photography: Acts as an antioxidant in traditional film development.
