Potassium hexafluoroantimonate is an inorganic compound with the chemical formula F₆KSb. This compound is composed of potassium ions and hexafluoroantimonate ions. Potassium hexafluoroantimonate is a white solid that usually exists in anhydrous form and has high stability and solubility.

Potassium hexafluoroantimonate is a strong acid and alkali salt, so it is a typical ionic compound with the typical properties of ionic compounds, such as high melting point and soluble in water. Due to the strong coordination ability of hexafluoroantimonate ions, potassium hexafluoroantimonate is also widely used in coordination chemistry.

Potassium hexafluoroantimonate is a metal salt compound that has the following main uses:

- Organic synthesis: Potassium hexafluoroantimonate can be used as a fluorinating agent, catalyst or reaction reagent in organic synthesis. It can participate in fluorination reactions, substitution reactions, addition reactions, etc., and is used to synthesize various organic compounds.

- Analytical reagents: In analytical chemistry, potassium hexafluoroantimonate can be used to detect and determine the presence and concentration of certain metal ions. It can form stable complexes with metal ions, which can be detected by spectroscopy or other analytical methods.

- Luminous material: Potassium hexafluoroantimonate can be used to prepare luminous fibers. During the preparation process, potassium hexafluoroantimonate reacts with other substances to form a luminous material that makes the fibers glow in dark places.

- Light-curing systems: Potassium hexafluoroantimonate can be used in light-curing systems. It can react with other compounds to form substances with curing properties, which are used in coatings, adhesives, and other fields.