Owing to its high solubility in water, low cost, and nitrogen content, sodium nitrate is used in several fertilizers. Some other uses of this compound are listed below.

1.Hybrid forms of aqua regia can be prepared with the help of NaNO3. These hybrids also have the ability to dissolve gold.

2.This compound is widely used as a food additive since it acts as a preservative.

3.Sodium nitrate is used as an oxidizer in several types of fireworks.

4.It is also a component of some instant cold packs.

5.NaNO3 is one of the components used for the storage and transfer of heat in some solar power plants.

6.In order to promote the growth of Nitrosomonas bacteria, this compound is added to the wastewater in several wastewater treatment plants.

7.Sodium nitrate is also used in several rocket propellants and is known to be a substitute for potassium nitrate in gunpowder.