Hexyl acetate is an organic compound primarily used as a fragrance and flavoring agent. It is an ester derived from hexanol and acetic acid. This compound is recognized for its fresh, fruity, and slightly floral aroma, and it is employed in a range of products including perfumes, cosmetics, and food items.

Chemical Composition and Structure

The chemical composition of hexyl acetate includes:

Hexanol: The alcohol component with a six-carbon chain (C6H14O) that imparts a fresh and fruity scent.
Acetic Acid: A two-carbon carboxylic acid (CH3COOH) that reacts with hexanol to form hexyl acetate.

The structure of hexyl acetate is characterized by:

Ester Functional Group: Formed from the reaction between the hydroxyl group of acetic acid and the carbonyl group of hexanol.
Molecular Formula: C8H16O2. The structure features a six-carbon chain (hexyl group) attached to an ester group (–COO–), resulting in its distinctive fresh, fruity aroma.

Physical Properties

Hexyl acetate typically appears as a clear, colorless to pale yellow liquid. It has a fresh, fruity, and slightly floral odor, similar to green apples or pears. The compound is soluble in alcohol and oils but insoluble in water. It has a moderate boiling point, making it suitable for use in various formulations.

Production Process

The production process for hexyl acetate involves:

Synthesis: Hexyl acetate is synthesized through esterification, a chemical reaction where hexanol reacts with acetic acid in the presence of an acid catalyst, such as sulfuric acid.
Distillation: The reaction mixture is distilled to separate hexyl acetate from other by-products and residual reactants.
Purification: Additional purification steps are applied to remove any impurities, ensuring that the final product meets quality standards.
Formulation: The purified hexyl acetate is then incorporated into various products, including perfumes, flavorings, and cosmetics.

Applications

Hexyl acetate is used in:

Fragrances: Included in perfumes and scented products to impart a fresh, fruity aroma.
Cosmetics: Added to personal care products to enhance their fragrance profile.
Flavorings: Used in food and beverage products to provide a fruity flavor.
Household Products: Employed in air fresheners and cleaning products for its pleasant scent.

Safety

Hexyl acetate is generally regarded as safe for use in fragrances and flavorings when used in recommended concentrations. It should be handled according to safety guidelines to prevent any potential irritation.

Environmental and Safety Considerations

The production of hexyl acetate should follow environmentally responsible practices to minimize its impact. Efficient synthesis and purification methods are important to reduce waste. Proper handling and labeling are essential to ensure safe use in its various applications.

INCI


Fragrance. It plays a very important role in the formulation of cosmetic products as it provides the possibility of enhancing, masking or adding fragrance to the final product, increasing its marketability. It is able to create a perceptible pleasant odour, masking a bad smell. The consumer always expects to find a pleasant or distinctive scent in a cosmetic product.

Perfuming. Unlike fragrance, which can also contain slightly less pleasant or characteristic odours, the term perfume indicates only very pleasant fragrances. Used for perfumes and aromatic raw materials.

Flavoring agent. The purpose of this ingredient is to modify the solution to impart a certain flavour. Natural flavouring extracts are rather expensive, so the cosmetic and pharmaceutical industries resort to synthesised substances that have sensory characteristics mostly similar to natural flavourings or are naturally equivalent. This ingredient is isolated through chemical processes or is synthesised from chemicals. It is also referred to as Aroma.
Synonyms:

CAS: 142-92-7 EC number 205-572-7