Sodium fluoride formula - Sodium fluoride uses, properties, structure and formula
Sodium fluoride, an inorganic sodium salt, is an important source for the fluoride Ion for many purposes.
Formula and structure: The chemical composition of sodium fluoride, NaF, is 41.99g/mol. It is a simple compound ionic, composed of the sodium (Na+), anion and fluoride. The cubic crystal structure of the solid salt is similar to that of sodium chloride, (NaCl).
Occurrence : Sodium fluoride is found in nature in very small quantities as the rare mineral Villiaumite.
Preparation of sodium fluoride: This is the main source. It is usually prepared by neutralizing hydrofluoric Acid with bases such as sodium carbonate, Na2CO3, sodium hydroxide, caustic soda, NaOH or sodium bicarbonate, (NaHCO3).
HF + NaOH-NaF + H2O
Physical properties: Sodium Fluoride is a white to greenish-colored, odorless, crystalline liquid. Its purity can vary. It has a density 2.56 g/mL and a melting point 993 degC. The boiling point is 1,704degC. It is a hygroscopic liquid (absorbs moisture from the air).
Chemical properties: Sodium fluoride dissolves easily in water, and can be dissociated into the sodium- and fluoride ions. It is not easily combustible, and it can cause corrosion to aluminum metal. It is stable under normal conditions. But, when heated to extreme temperatures, it begins to decompose with toxic and corrosive gases of hydrogen fluoride.
Uses: Sodium Fluoride is used extensively in toothpastes, water supplies and to maintain dental health. It is used in the glass and metallurgy industries as a cleaning agent, wood preservative and corrosion inhibitor, insecticide, chemical additive, and as a chemical reagent. A second important application is nuclear medical imaging. Radioactive sodium fluoride, or NaF18, is used as radiotracer to detect different conditions.
Health effects/safety risks: Sodium Fluoride is toxic and corrosive. Ingestion can lead to nausea, vomiting, diarrhea, convulsions, collapse, and even death. Inhalation of solid NaF can cause severe irritation to the respiratory system. Solid NaF can cause severe irritation and burns to the eyes or skin through contact with eye or skin.Tags: Sodium fluoride