Sodium Nitrate is used in various applications, some of which are:

1. Agriculture: It is used as a fertilizer in agriculture to provide plants with essential nitrogen and improve soil fertility.

2. Food Preservation: It is used as a preservative in processed meats and cheese to prevent the growth of harmful bacteria and improve shelf life.

3. Glass Industry: It is used in the production of glass to improve its physical and chemical properties.

4. Pyrotechnics: It is used as an oxidizer in fireworks and other explosives to produce vibrant colors and enhance the combustion process.

5. Pharmaceuticals: It is used in the manufacture of various pharmaceuticals, including antibiotics, antiseptics, and diuretics.

6. Heat transfer fluids: It is used in heat transfer fluids to provide a stable temperature for industrial processes.

7. Oil and gas exploration: It is used in oil and gas drilling and exploration as a lubricant and antifreeze agent.

8. Tanning industry: It is used in the tanning industry for processing hides and leather.

9. Water treatment: It is used in water treatment processes to remove impurities and improve water quality.