[4] Potassium hexafluoroaluminate can be obtained by reacting fluoroaluminic acid (obtained by the reaction of anhydrous hydrogen fluoride and aluminum hydroxide) with potassium hydroxide at high temperature, followed by filtering, drying, melting, and crushing.

Potassium hexafluoroaluminate appears as a white to light grey powder, and is slightly soluble in water.

It forms colorless crystals of the tetragonal system, space group I41/a.

[5] Potassium hexafluoroaluminate is used as a welding agent.

[6] It is also used in the production of pesticides, manufacture of glassware and enamel industry, in addition to being a solvent for the bauxite in the electrical manufacture of aluminum.