4-Chlorobenzoyl Chloride

4-Chlorobenzoyl chloride is a colorless transparent liquid with a strongly irritating odor — an important chlorinated aromatic acyl chloride intermediate widely used in pharmaceuticals, agrochemicals and dyes. Boiling point 222 °C; insoluble in water; hydrolyzes violently on contact with water.

The acyl chloride group is highly reactive, and the para chlorine further enhances electrophilicity, making it suitable for preparing various p-chlorobenzoyl derivatives. It is a common aromatic acylating reagent in fine chemical synthesis with an important position in the global pharmaceutical and agrochemical intermediates market.