Sodium Fluoride - Multi-Grade Chemical for Dental, Water Treatment & Electronics

1.Oral Care - Anti-caries (Most well-known application):It is added to toothpaste, mouthwash, and public drinking water (water fluoridation). Fluoride ions can react with hydroxyapatite, the main component of tooth enamel, to form fluorapatite, which is more resistant to acid erosion. This enhances the tooth's acid resistance and effectively prevents tooth decay.

2.Electronics industry: It is Used As a Raw Material/Precursor for the Synthesis of Key Electronic Chemicals This is the most critical application of sodium fluoride in the electronics industry. It serves as a fundamental fluorinating agent used for synthesizing many specialty fluorine-containing chemicals required in high-end electronic processes.

3.Water Fluoridation (Public Service): As mentioned above, in areas that implement water fluoridation, very low concentrations of sodium fluoride (or other fluorides) are added to the public water supply as a public health measure to reduce the overall incidence of dental caries in the community.

4. Medical Fields Anticoagulant Tube Additive: When drawing blood for tests, sodium fluoride is commonly used as an additive in blood collection tubes for glucose testing. It inhibits the activity of enzymes in the blood (inhibits glycolysis), preventing the degradation of blood glucose before testing, thus ensuring accurate results. It also has an anticoagulant effect. Bactericide and Preservative: Due to its toxicity, it can be used as a mild bactericide and preservative. However, its use in this field has gradually decreased due to safety concerns.

5.Metal Surface Treatment: As a Fluxing Agent: In the welding and brazing of aluminum, sodium fluoride is used as a flux to remove the aluminum oxide film on the metal surface, allowing the solder to better wet and connect the metal. Stainless Steel Pickling: Adding sodium fluoride to pickling solutions helps remove scale and impurities from the surface of stainless steel.

6.Industrial and Chemical Manufacturing: Raw material for other fluorides: As a basic fluoride, it is used to produce insecticides (such as sodium fluoride solutions for wood preservation) and to synthesize other fluorine-containing chemicals (e.g., lithium hexafluorophosphate, a key material for lithium-ion battery electrolytes).

Glass and Ceramic Industry: Used as an opacifying agent and flux, it can lower the melting temperature of glass and increase product gloss.
Steel Industry: Used as a smelting flux to lower the melting point of slag and improve smelting efficiency.
Wood Preservative: Sodium fluoride effectively kills fungi and insects that decay wood. It was once widely used for wood preservation, but its use has been restricted in many places due to environmental concerns.