propionic anhydride
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propionic anhydride
[¦prō·pē¦än·ik an′hī‚drīd] (organic chemistry)
(CH3CH2CO)2O A colorless liquid with a boiling point of 167-169°C; soluble in ether, alcohol, and chloroform; used as an esterifying agent and for dyestuffs and pharmaceuticals.