Benzoyl fluorideBenzoyl fluoride is an organic, aromatic compound of carbon, hydrogen, fluorine, and oxygen. It is the acyl fluoride of benzoic acid; its chemical formula is. It was initially isolated by Alexander Borodin in 1863.SynthesisBenzoyl fluoride can be prepared by the reaction of benzoyl chloride or benzoic anhydride with potassium fluoride, or by using trifluorotoluene as a precoursor in presence of niobium pentoxide as a catalyst.Chemical propertiesBenzoyl fluoride hydrolyzes in water to benzoic acid and reacts with alkalis to form salts:Physical propertiesBenzoyl fluoride is a colorless liquid that is soluble in ethanol, diethyl ether, and acetone.UsesThe compound can be used as an ionic liquid and as a silicone depolymerization agent.