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Sodium nitrate
Sodium nitrate
Sodium nitrate can be used in the production of nitric acid by combining it with sulfuric acid Sodium nitrate is also a food additive used as a preservative and color fixative in cured meats and poultry. Less common applications include as an oxidizer in fireworks replacing potassium nitrate commonly found in black powder and as a component in instant cold packs. Sodium nitrate is used together with potassium nitrate and calcium nitrate for heat storage and, more recently, for heat transfer insolar power plants. A mixture of sodium nitrate, calcium nitrate and potassium nitrate is used as energy storage material in prototype plants, such as Andasol Solar Power Station and the Archimede project.
Mouthwash and gels containing sodium nitrate are used in treatment of dentine hypersensitivity