Tags: Chemical Compound, Chemical Substance.
Tetraphenylphosphonium chloride is the chemical compound with the formula (C6H5)4PCl abbreviated Ph4PCl or PPh4Cl. Tetraphenylphosphonium and especially tetraphenylarsonium salts were formerly of interest in gravimetric analysis of perchlorate and related oxyanions. This colourless salt is used to generate lipophilic salts from inorganic and organometallic anions. Thus Ph4P+ is useful as a phase-transfer catalyst again because it allows inorganic anions to dissolve in organic solvents.
