SNO, or Sodium Nitrate Oxidation, is a chemical process that involves the oxidation of sodium nitrate. This process is significant in various industrial applications, including the production of fertilizers and explosives. Sodium nitrate is a naturally occurring mineral that serves as a source of nitrogen, which is essential for plant growth. In addition to its agricultural uses, SNO is also relevant in the food industry, where it acts as a preservative and color fixative in cured meats. It helps inhibit the growth of harmful bacteria, ensuring food safety and extending shelf life.