Ethyl butyrate

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Ethyl butyrate


Ethyl butyrate, also known as ethyl butanoate, is an ester formed by the chemical reaction between butyric acid and ethanol. It is a clear, colorless liquid that is commonly used in the food industry as a flavor enhancer due to its fruity odor, reminiscent of pineapples or fresh oranges. Ethyl butyrate is also found naturally in various fruits and is a key component in the flavor profile of these fruits.

Properties[edit | edit source]

Ethyl butyrate has a molecular formula of C6H12O2 and a molecular weight of 116.16 g/mol. It has a boiling point of approximately 120°C (248°F) and a melting point of -93°C (-135°F). This compound is slightly soluble in water, but it is highly soluble in most organic solvents such as ethanol, diethyl ether, and chloroform.

Synthesis[edit | edit source]

The synthesis of ethyl butyrate can be achieved through a process known as esterification, where butyric acid reacts with ethanol in the presence of an acid catalyst such as sulfuric acid. The reaction is an equilibrium reaction, and the yield of ethyl butyrate can be increased by removing the water formed during the process or by using an excess of one of the reactants.

Applications[edit | edit source]

Ethyl butyrate is widely used in the food industry as a flavoring agent to impart a fruity flavor to candies, beverages, and other food products. It is also used in perfumery to create fruity and fresh fragrances. In addition to its use in flavorings and fragrances, ethyl butyrate is used as a solvent and an intermediate in the synthesis of other chemical compounds.

Safety[edit | edit source]

Ethyl butyrate is generally recognized as safe (GRAS) by the Food and Drug Administration (FDA) when used in accordance with good manufacturing practices. However, like many chemicals, it should be handled with care, and appropriate safety measures should be taken to avoid inhalation, ingestion, or skin contact.

Environmental Impact[edit | edit source]

The environmental impact of ethyl butyrate is considered to be low. It is biodegradable and does not accumulate in the environment. However, as with all chemical substances, responsible handling and disposal practices should be followed to minimize any potential environmental effects.

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Contributors: Prab R. Tumpati, MD