Which fluoride compound is commonly known as a dry feed chemical?

Sodium fluoride is recognized as a common dry feed chemical used in water fluoridation. It is a stable and effective source of fluoride that can be easily handled and transported in a solid form, making it convenient for use in various water treatment processes. This characteristic allows for accurate dosing and application in drinking water systems to help reduce the incidence of dental caries.

Calcium fluoride, while also a source of fluoride, is not as easily employed in a dry feed form for water treatment due to its solubility issues and lower fluoride ion availability compared to sodium fluoride. Amine fluoride, on the other hand, is primarily used in dental products rather than in large-scale water fluoridation. Potassium fluoride is less commonly used than sodium fluoride and often serves different applications in the chemical industry.

The widespread usage of sodium fluoride in municipal water systems underscores its appropriateness as a dry feed chemical, given its effectiveness, ease of handling, and regulatory approval for public health initiatives aimed at improving dental health.