Silver(I) fluoride is the inorganic compound with the formula AgF. It is commonly found as the hygroscopic yellow anhydrous form, but various colorless hydrates, such as AgF·2H2O and AgF·4H2O, are also known. It is one of the three main fluorides of silver, the others being silver subfluoride and silver(II) fluoride. AgF has relatively few niche applications; it has been employed as a fluorination and desilylation reagent in organic synthesis and in aqueous solution as a topical caries treatment in dentistry.
Preparation
High-purity silver(I) fluoride can be produced by the heating of silver carbonate to 310 °C (590 °F) under a hydrogen fluoride environment, in a platinum tube:[7]: 9