Used as a preservative in food and beverage industries to prevent oxidation and microbial growth, especially in wines and processed foods. Commonly employed in water treatment to remove chlorine and dissolve oxygen, helping prevent corrosion in pipelines and boilers. Acts as a reducing agent in chemical manufacturing processes, including the production of dyes, pharmaceuticals, and pulp in the paper industry. Utilized in photography as a component in developing and fixing solutions to protect developers from oxidation. Also found in some cosmetic formulations to maintain product stability by scavenging oxygen.