Sodium nitrite, a chemical compound with the formula NaNO2, is a crucial additive in various industries, primarily known for its role in food preservation. Its main function is inhibiting bacterial growth, preventing spoilage, and maintaining the appealing red color of processed meats like bacon, hot dogs, and deli meats. Beyond food, sodium nitrite finds applications in pharmaceuticals, dyes, and even in automotive coolant systems. However, its use in food has sparked debates due to potential health risks when consumed in excess, as it can form harmful compounds. Thus, while it serves as a valuable preservative, careful regulation and moderation are essential to ensure its safe and beneficial utilization across industries.