Applications
Tetraphenylphosphonium bromide is a supporting electrolyte for the electroreduction of buckminsterfullerene. It is used to extract heavy metals from aqueous solution as ion-association complexes

Solubility
Soluble in water.

Notes
Store in cool place. Keep container tightly closed in a dry and well-ventilated place. It is hygroscopic in nature. Incompatible with strong oxidizing agents. Stable at room temperature in closed containers under normal storage and handling conditions.