Is Iron(ii) tetrafluoroborate hexahydrate (CAS: 13877-16-2) safe?

Iron(ii) tetrafluoroborate hexahydrate (CAS: 13877-16-2) is generally considered safe when handled with appropriate precautions. It is non-toxic and non-flammable. However, it can release fluoride ions in solution, which can be harmful if ingested or if solutions come into contact with skin or eyes. Protective gloves and safety goggles should be worn during handling, and the compound should be stored in a sealed container to prevent moisture absorption.