Heptyl acetate

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Heptyl acetate


Heptyl acetate, also known as ethyl heptanoate, is an organic compound with the chemical formula C9H18O2. It is an ester formed from the condensation reaction of heptanoic acid and ethanol. Heptyl acetate is a clear, colorless liquid that is used in various applications due to its pleasant fruity odor, resembling that of apples or bananas. It is commonly used as a flavoring agent in the food industry, as well as a fragrance ingredient in the production of perfumes and cosmetics.

Properties[edit | edit source]

Heptyl acetate has a molecular weight of 158.24 g/mol and boils at approximately 212°C. It is slightly soluble in water, but highly soluble in most organic solvents such as ethanol, diethyl ether, and benzene. The compound has a low vapor pressure, which contributes to its stability and longevity as a fragrance or flavoring agent.

Synthesis[edit | edit source]

The synthesis of heptyl acetate typically involves the esterification of heptanoic acid with ethanol. This reaction is catalyzed by an acid, such as sulfuric acid, which acts to speed up the reaction by donating a proton to the alcohol, forming a more reactive alcohol ion that can more readily react with the acid to form the ester.

Uses[edit | edit source]

Heptyl acetate's primary use is as a flavoring agent in the food industry, where it imparts a sweet, fruity flavor to various products. It is also used in the fragrance industry, where its pleasant, apple-like odor makes it a popular choice for perfumes, lotions, and other cosmetic products. Additionally, heptyl acetate can be used as a solvent or an intermediate in the synthesis of other chemical compounds.

Safety[edit | edit source]

Heptyl acetate is generally considered safe for use in both the food and fragrance industries. However, like many organic compounds, it should be handled with care. Exposure to high concentrations of heptyl acetate vapor can cause irritation to the eyes, skin, and respiratory system. It is important to use appropriate personal protective equipment when handling this chemical in industrial settings.

Environmental Impact[edit | edit source]

The environmental impact of heptyl acetate is relatively low. It is biodegradable and does not accumulate in the environment. However, as with all chemical compounds, care should be taken to prevent large-scale releases into the environment to avoid potential harm to aquatic and terrestrial life.

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Contributors: Prab R. Tumpati, MD