Butyryl chloride
Introduction '''Butyryl chloride''' is an organic compound with the chemical formula CH3CH2CH2C(O)Cl. It is a colorless liquid with a unpleasant odor. Butyryl chloride is soluble in organic solvents, but it reacts readily with water and alcohols. It is usually produced by chlorination of butyric acid.
Reactions Like related acyl chlorides, butyryl chloride hydrolyzes readily::CH3CH2CH2C(O)Cl  +  H2O  →  CH3CH2CH2CO2H  +  HClAlcohols react to give esters::CH3CH2CH2C(O)Cl  +  ROH  →  CH3CH2CH2CO2R  +  HClAmines react to give amides::CH3CH2CH2C(O)Cl  +  R2NH  →  CH3CH2CH2C(O)NR2  +  HClDerivatives of butyryl chloride are used in manufacturing pesticides, pharmaceuticals, perfume fixative, polymerization catalyst, and dyestuffs. Butyryl chloride is also commonly used as an intermediate for organic synthesis for the preparation of pharmaceuticals, agrochemicals, dyes, esters, and peroxide compounds.
Safety Butyryl chloride is flammable and fumes in air, releasing hydrogen chloride.
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