Potassium hydrogen fluoride (KHF2), also known as fluoroboric acid or hydrofluoroboric acid, is a colorless crystalline solid that is highly soluble in water. It is used in various applications, including the production of other fluorides, as a catalyst in organic synthesis, and in the etching of glass. Additionally, it serves as a fluorinating agent for fluorinated organic compounds, which can be used in the finishing of fabrics and components of extinguishing agents.
In the dental industry, potassium hydrogen fluoride is used in toothpaste and mouth rinses to prevent tooth decay by providing fluoride ions that help to strengthen tooth enamel. It is also used in the textile industry for dyeing and printing processes. The compound's ability to form complexes with metal ions makes it useful in analytical chemistry for titration processes.
Due to its corrosive nature, potassium hydrogen fluoride can cause irritation to the skin, eyes, and respiratory tract. It is important to handle this compound with care and to follow safety guidelines and regulations. Storage should be in a cool, dry place, away from moisture and incompatible materials.