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n-Butyl acetate, also known as butylethanoate, is an ester
which is a colorless flammable liquid at room temperature. Butyl
acetate isfound in many types of fruit, where along with other chemicals
it impartscharacteristic flavors and has a sweet smell of banana or
apple. It is used asa synthetic fruit flavoring in foods such as candy,
ice cream, cheeses, andbaked goods. Butyl acetate is often used as a
high-boiling solvent of moderate polarity.
The other three isomers of butyl acetate are: isobutylacetate, tert-butyl acetate, and sec-butylacetate.
acetates are commonlymanufactured by the Fischer esterification of
butanol (or its isomer to make an isomer of butyl acetate) and acetic
acidwith the presence of catalytic sulfuric acidunder refluxconditions
with the following reaction:
Apples, especially of the Red Delicious variety, are flavored in part by this chemical. The alarmpheromones emitted by the Koschevnikov gland of honey beescontain butyl acetate.