Sodium nitrate is a white, crystalline compound made up of sodium, nitrogen, and oxygen. It is commonly used as a fertilizer in agriculture because it provides essential nutrients that help plants grow. Additionally, sodium nitrate is found in some food products, where it acts as a preservative and helps maintain color and flavor. In the industrial world, sodium nitrate plays a role in the production of glass and explosives. It is also used in the manufacture of certain chemicals. However, it's important to handle sodium nitrate carefully, as it can be harmful in large quantities and may contribute to environmental issues if not managed properly.