Sodium monofluorophosphate (SMFP), also known as monofluorophosphate sodium, is an inorganic compound with the chemical formula Na₂PO₃F. It is a white, odorless, water-soluble powder used as a source of fluoride.
Its primary use is as an active ingredient in toothpaste, where it functions to help prevent dental caries (tooth decay). SMFP provides fluoride ions that strengthen tooth enamel by forming fluorapatite, which is more resistant to acid produced by oral bacteria. Unlike sodium fluoride, SMFP releases fluoride more slowly, making it compatible with calcium-based abrasives commonly used in toothpaste.
SMFP is not typically used in food or general pharmaceutical applications. Its main use remains in oral care products such as toothpaste and, less commonly, mouth rinses.
