Used as an antioxidant in food preservation, sodium ascorbate helps prevent spoilage by inhibiting oxidation in processed foods and beverages. It maintains color, flavor, and freshness in products like cured meats, canned fruits, and dairy items. Commonly added to infant formulas and dietary supplements, it serves as a source of vitamin C with better stomach tolerance compared to ascorbic acid.

In pharmaceuticals, it stabilizes active ingredients and enhances shelf life. Also utilized in cosmetic formulations to protect against oxidative degradation and support skin health.

Industrial applications include its use in water treatment and as a reducing agent in chemical processes.