Potassium tetraphenylborate is the salt with the formula KB(C6H5)4).

The salt has a low solubility in water of only 1.8×10−4 g/L.

It is, however, soluble in organic solvents.

The insolubility of this compound has been used to determine the concentration of potassium ions by precipitation and gravimetric analysis:[1] The compound adopts a polymeric structure with bonds between the phenyl rings and potassium.

This article about an organic compound is a stub.