BENZYL ACETATE

CAS: 140-11-4 FLAVORING AGENT OR ADJUVANT

Benzyl acetate is a flavoring agent and adjuvant used in foods and beverages, identified by CAS number 140-11-4. It has a fruity aroma and is permitted for use under the US FDA regulation 21 CFR 172.515 as a synthetic flavoring substance used in accordance with good manufacturing practice.

What It Is

Benzyl acetate is an organic ester compound used as a flavoring agent or adjuvant in foods. It is chemically identified by the CAS number 140-11-4. It is also known in scientific and industrial contexts by synonyms such as benzyl ethanoate and phenylmethyl acetate. As a flavoring agent, benzyl acetate contributes a fruity odor that can enhance or modify sensory profiles of food products. As an adjuvant, it may assist other additive components in achieving their intended effects in formulations. In terms of its classification, benzyl acetate belongs to a broad class of esters that are widely used in the flavor and fragrance industry because of their appealing sensory characteristics. Within this group, benzyl acetate is distinguished by its balance of volatility and aroma profile, which makes it useful in applications where a consistent and recognizable fruity note is desired. Its presence in regulated flavoring lists reflects long-standing use in food contexts, often at low concentrations that are adequate to provide the sensory benefit without contributing materially to nutritional content. Because benzyl acetate is used for its sensory role rather than for nutrition or preservation, regulatory evaluation typically emphasizes safe exposure levels and conditions of use, rather than specific performance metrics. This means that safety assessments and usage guidelines from expert panels and food regulatory authorities play a central role in determining the contexts in which it may be formulated into food products.

How It Is Made

Benzyl acetate can be produced by esterification reactions involving benzyl alcohol and acetic acid or acetic anhydride under controlled chemical processing conditions. In the laboratory or industrial setting, catalysts such as mineral acids may be used to facilitate the reaction that produces the ester linkage between the alcohol and acid components. After the esterification is complete, purification techniques such as distillation are typically employed to isolate benzyl acetate of sufficient purity for use in flavor applications. The basic chemistry of ester formation is well understood: the hydroxyl group of benzyl alcohol reacts with the carboxyl group of the acetic acid source to form the ester bond, releasing water in the process. Control over reaction time, temperature, and catalyst concentration allows producers to optimize yield and reduce by-products. Once the crude product is formed, distillation separates benzyl acetate from unreacted starting materials and minor impurities. For food applications, purified benzyl acetate must meet appropriate quality standards. These standards focus on purity, absence of harmful contaminants, and consistency of organoleptic properties. Third-party specifications, often provided in food additive compendia or supplier documentation, help manufacturers ensure the material meets regulatory and safety expectations. The manufacturing context also includes adherence to safety standards for handling flammable and volatile organic substances.

Why It Is Used In Food

Benzyl acetate is used in food primarily because of its aromatic and flavor-enhancing properties. Its fruity and floral odor and taste profile can augment or complement natural flavors in a broad range of formulations. For example, when included in fruit-flavored products, it can help evoke specific sensory impressions that are associated with natural fruit notes. In practical terms, benzyl acetate may be used at low concentrations because flavor compounds are typically potent and can influence the overall profile of a product even when present in minute quantities. Food scientists and flavorists blend it with other flavor components to achieve desired sensory effects, such as sweet-fruity notes in confectionery, beverages, and dairy products. Its role as an adjuvant also means it may help stabilize or enhance the impact of other flavor ingredients. Because flavor perception is complex and influenced by multiple factors including temperature, pH, and the presence of other ingredients, the precise motivation for choosing benzyl acetate in a given formula is often empirical. Formulation trials and sensory panels help determine if the inclusion of benzyl acetate improves consumer perception of a finished product. Its continued use reflects decades of experience within the flavor industry and inclusion in regulatory lists for synthetic flavoring substances.

Adi Example Calculation

For illustrative purposes only, consider a hypothetical adult weighing 70 kilograms. If the acceptable daily intake (ADI) for benzyl acetate is considered in terms of the group ADI maintained by expert committees, then a daily intake at the upper bound of 5 mg per kilogram body weight would equate to 350 mg for that individual (70 kg times 5 mg/kg). This calculation is strictly illustrative and does not represent a recommendation for consumption. Actual exposure from food additives is typically orders of magnitude lower because flavoring agents are used at low levels to achieve sensory effects.

Safety And Health Research

Extensive safety evaluations for flavoring agents like benzyl acetate focus on toxicological data, exposure assessments, and metabolic pathways rather than on direct health effects from typical food use. International expert committees such as JECFA review available data on benzyl acetate and related compounds to determine whether there are any safety concerns at expected intake levels. According to the JECFA database entry, a group acceptable daily intake for benzyl acetate and related compounds was established and maintained, indicating no safety concern at current intake levels when used as a flavoring agent. (世界卫生组织应用) Regulatory safety data also consider metabolic fate: benzyl acetate is metabolized to constituents that are further processed by typical physiological pathways. Evaluations examine endpoints such as genotoxicity, chronic toxicity, and potential for systemic effects to ensure that normal consumption through food does not pose undue risk. Occupational and laboratory safety documentation highlight that benzyl acetate, like many organic esters, can be an irritant and should be handled appropriately in concentrated form. These materials provide guidance on exposure scenarios that differ substantially from dietary intake and therefore are not directly relevant to food safety usage.

Regulatory Status Worldwide

In the United States, benzyl acetate is included under the regulation 21 CFR 172.515 as a synthetic flavoring substance and adjuvant that may be safely used in food when used in accordance with all principles of good manufacturing practice in the minimum quantity required to produce its intended effect. This regulation lists it among numerous other flavoring agents authorized for food use. The inclusion of benzyl acetate in this regulation reflects evaluation by US food safety authorities that its use under these conditions does not raise safety concerns. 21 CFR 172.515 provides a legal framework for food manufacturers to incorporate specific synthetic flavoring substances, including benzyl acetate, into products without individual food additive petitions when used appropriately. Internationally, benzyl acetate has been evaluated by the Joint FAO/WHO Expert Committee on Food Additives (JECFA), which maintains a group acceptable daily intake (ADI) for benzyl acetate and related compounds expressed as benzoic acid equivalents. According to the JECFA database, the group ADI of 0-5 mg/kg body weight was maintained at the fifty-seventh meeting, encompassing benzyl acetate among other related flavoring agents. JECFA’s evaluation comments that there is no safety concern at current intake levels when used as a flavoring agent. (世界卫生组织应用) Other jurisdictions and scientific bodies may adopt similar frameworks that recognize benzyl acetate’s safety and support its use in food when applied within defined technical and good manufacturing practice boundaries. These evaluations provide reassurance that regulatory oversight considers exposure, safety data, and intended use in determining acceptable conditions for food additive inclusion.

Taste And Functional Properties

Benzyl acetate contributes a fruity, sweet, and floral sensory note that is often described as reminiscent of jasmine, apple, or pear. The perception of its aroma and taste arises from its ester functional group and resultant volatility, which allows it to interact with olfactory receptors when consumed or inhaled. In formulations, this functional property can help create or enhance the intended flavor profile at low usage levels. Functionally, benzyl acetate is an organic ester that has moderate solubility in lipids and limited solubility in water. Its volatility contributes to its aromatic impact, particularly in products where aroma release during consumption is essential. These physicochemical traits make it useful in flavor systems where aroma performance is a priority. In typical food conditions, benzyl acetate will interact with the matrix of other ingredients, and its sensory contribution depends on factors such as product composition, pH, and processing conditions. Because flavor compounds can be sensitive to heat and pH, formulators consider stability in specific food systems to ensure that the desired sensory attributes are maintained through processing, storage, and consumption.

Acceptable Daily Intake Explained

An acceptable daily intake (ADI) is a regulatory concept used by expert bodies such as JECFA to define a daily exposure level over a lifetime that is considered safe for humans, based on available toxicological data and appropriate safety factors. JECFA’s group ADI for benzyl acetate and related compounds is expressed as a range (0-5 mg per kilogram of body weight) when considered as benzoic acid equivalents, reflecting a conservative estimate of safe exposure. (世界卫生组织应用) It is important to note that the ADI is not a recommended level to aim for in the diet; rather, it is a guideline for regulators and manufacturers to ensure that typical use levels in food do not result in exposures that exceed what is considered unlikely to pose health risks over a lifetime. ADIs incorporate uncertainty factors to provide a margin of safety beyond observed no-effect levels in toxicological studies.

Comparison With Similar Additives

Benzyl acetate is one of many ester-based flavoring agents that contribute fruity or floral notes to food products. Similar compounds include ethyl acetate, which provides a sweet, fruity profile with high volatility often used in fruit‑flavored products; isoamyl acetate, known for its banana‑like flavor profile that is common in confectionery; and methyl anthranilate, which imparts a grape‑like aroma suited to certain beverage applications. While these compounds differ in sensory character, they share functional roles as esters that enhance or modify flavor profiles at low usage levels. Regulatory considerations for these flavoring agents are analogous: safety evaluations focus on typical exposure from food use and ensure that conditions of good manufacturing practice are met. The choice among such additives in formulation typically depends on the desired sensory outcome rather than on broad differences in regulatory safety frameworks.

Common Food Applications Narrative

Benzyl acetate’s profile as a fruity, floral ester makes it a versatile flavor ingredient in a wide range of food and beverage applications. In fruit-flavored beverages, it can provide underlying notes that support the desired profile without overpowering the natural fruit essence. In candy and confectionery formulations, it contributes a sweet and aromatic character that aligns well with consumer expectations for fruit or floral-themed flavors. In dairy and dessert products, benzyl acetate may be paired with other flavor compounds to balance richness and provide nuanced sensory layers. For example, in yogurt or flavored milk, its fruity elements can help round out the flavor profile without introducing off-notes. In baked goods, it is used in concert with other flavor agents where high-temperature processing can challenge the stability of volatile components. Beyond beverages and sweets, benzyl acetate is found in certain savory applications that benefit from subtle aromatic enhancement. Culinary uses reflect the compound’s ability to contribute complexity to flavor perception. Across these contexts, the principle of good manufacturing practice is applied: benzyl acetate is added in quantities appropriate to achieve the sensory objective without exceeding levels that would alter the overall balance of the finished product.

Safety & Regulations

FDA

  • Approved: True
  • Regulation: 21 CFR 172.515

EFSA

  • Notes: EFSA specific evaluation and numeric ADI not found in available sources

JECFA

  • Year: 2001
  • Ins Number: 23
  • Adi Display: 0-5 mg/kg bw
  • Adi Mg Per Kg: 5

Sources

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