ALLYL OCTANOATE

CAS: 4230-97-1 FLAVORING AGENT OR ADJUVANT

ALLYL OCTANOATE is a synthetic flavoring agent permitted in food in the United States under good manufacturing practice as a member of the synthetic flavoring substances and adjuvants class.

What It Is

ALLYL OCTANOATE is an ester compound used as a flavoring agent or adjuvant in food products. It is identified by the CAS number 4230-97-1 and is recognized by flavor industry compilations and regulatory listings as a synthetic flavoring substance. As a member of this class of compounds, it is used to impart specific scent and taste characteristics that resemble fruity and tropical notes in finished food products. Other synonyms for the same chemical entity include ALLYL CAPRYLATE, ALLYL OCTYLATE, 2-PROPENYL OCTANOATE, 2-PROPENYL OCTYLATE, OCTANOIC ACID 2-PROPENYL ESTER, and OCTANOIC ACID ALLYL ESTER, reflecting its chemical structure as an allyl ester of octanoic acid. The distinctive part of its technical identity is that the allyl group confers volatility and aroma characteristics useful in flavor design. Within regulatory and flavor databases, it appears as a permitted member of the synthetic flavoring substances list and is catalogued under identifiers including FEMA number 2037 and JECFA number 5. Because it is an ester formed from allyl alcohol and an octanoic acid moiety, it belongs to a broader class of fatty acid esters that are widely used to emulate fruit-like sensory notes. In practical terms, the flavoring function designated for ALLYL OCTANOATE is derived from its ability to provide characteristic sensory contributions that are not adequately supplied by the original food matrix. This places it within a suite of small ester compounds broadly used in the formulation of beverages, confectionery, and dessert products. Its use as an adjuvant means it may also support the delivery or perception of other flavor ingredients in complex flavor systems. The identity and classification of ALLYL OCTANOATE have been reviewed and are maintained by authoritative bodies in the food additive regulatory domain, which compile and assess such substances for safe use in food applications. Its inclusion in official inventories signals that regulatory bodies have identified it for permissible use under specified conditions.

How It Is Made

The production of ALLYL OCTANOATE involves classic esterification chemistry combining an alcohol component and an acid component to form an ester linkage. In this case, the allyl alcohol moiety reacts with octanoic acid under controlled conditions in the presence of an acid catalyst to yield the allyl ester of octanoic acid, commonly referred to as ALLYL OCTANOATE. Although numerous catalysts and process conditions can be used in laboratory or industrial settings, a traditional method employs a strong acid catalyst to facilitate the removal of water formed during the reaction, shifting the equilibrium toward ester formation. The reaction is often followed by purification steps to isolate the desired product and remove unreacted starting materials, catalyst residues, and by-products. After synthesis, the crude product is typically subjected to distillation or other purification techniques to achieve a flavor-grade purity suitable for use in food applications. Specifications for purity and identity may be provided by flavor industry standards, which outline acceptable organoleptic and chemical properties. The final flavor-grade material is usually a clear, colorless to pale yellow liquid with a characteristic fruity odor profile. Quality control tests often include checks on ester content, residual acid content, and absence of contaminants that would impair flavor quality or pose safety concerns. Because of its specialized use in flavor applications, production is typically carried out by chemical manufacturers with expertise in flavor and fragrance raw materials. They operate under good manufacturing practice protocols to ensure consistent quality and compliance with regulatory specifications. While the underlying organic chemistry is well established, specific industrial processes may be proprietary. In all cases, the synthesis of ALLYL OCTANOATE reflects standard esterification principles widely used in the creation of flavor and fragrance esters.

Why It Is Used In Food

ALLYL OCTANOATE is used in food because it provides distinct sensory contributions that enhance or create specific flavor profiles. Food formulators often rely on such flavoring agents when the natural ingredients alone do not yield the desired sensory impact or when consistency in flavor is needed across batches. The ester functional group in ALLYL OCTANOATE interacts with human olfactory receptors in a manner that evokes fruity and tropical nuances, which can be essential in formulating products such as beverages, confections, and dessert items. Its use as a flavoring agent or adjuvant aligns with the objectives of product developers to craft appealing taste experiences that meet consumer expectations. The compound’s volatility and aromatic characteristics make it useful in flavor systems where delicate fruit notes are desirable. Because it is a synthetic flavoring substance, its inclusion allows for greater control over flavor intensity and consistency compared to relying solely on natural extracts, which can vary due to seasonal and agricultural factors. By providing a reproducible sensory signature, ALLYL OCTANOATE supports the creation of standardized taste experiences in mass-produced food and beverage products. In addition to sensory contributions, flavoring agents like ALLYL OCTANOATE can play a role in balancing other flavor components within a formulation. In complex flavor blends, individual ingredients may interact, and adjuvants can help unify disparate notes or bring out subtle elements that would otherwise be overshadowed. This makes such compounds useful tools for flavor designers working on a broad range of products, from soft drinks to dairy desserts and confectionery. Their use is governed by regulatory frameworks that permit them under specified conditions of good manufacturing practice, ensuring that they are added in the minimum quantity necessary to achieve the intended effect.

Adi Example Calculation

An illustrative example can help clarify how the concept of acceptable daily intake applies to flavoring agents like ALLYL OCTANOATE, even when no numeric ADI is assigned by regulators. Regulatory evaluations often estimate dietary exposure by considering typical use levels in food categories, combined with consumption data for those categories. For instance, if a flavoring agent is used at very low parts-per-million levels in beverages or confections, and consumers typically ingest a modest amount of those products in a day, the resulting estimated exposure is low relative to levels associated with any toxicological thresholds in animal studies. To illustrate, consider a hypothetical scenario where a beverage contains a flavoring agent at a concentration of a few parts per million. If an adult consumes a liter of that beverage in a day, their intake of that compound would be in the microgram range. In safety assessments, toxicologists compare such exposure estimates with data from animal studies where much higher doses are administered to identify any adverse effects. When the estimated human exposure is orders of magnitude lower than doses associated with adverse outcomes in animals, regulators conclude that there is a wide margin of safety. This margin of safety, built into the evaluation process, helps ensure that typical use patterns do not result in harmful exposures. While the specific numeric example above uses hypothetical values for illustrative purposes, it demonstrates the principle behind regulatory safety evaluations: low dietary exposure relative to toxicological thresholds. For ALLYL OCTANOATE, regulators have reviewed available evidence and concluded that there is no safety concern at current levels of intake when used as a flavoring agent, indicating that typical consumption patterns remain well within safe margins. This conceptual understanding of ADI and exposure helps stakeholders interpret safety evaluations in the context of real-world use.

Safety And Health Research

Research and evaluation of food flavoring agents focus on understanding potential hazards and exposures relevant to human consumption rather than asserting specific health effects without evidence. For ALLYL OCTANOATE, safety considerations derive from toxicological data, structure-activity relationships, and regulatory assessments that inform permissible use. Toxicology studies typically assess acute toxicity, irritation potential, and other endpoints relevant to safety. Data compiled in material safety information sheets and chemical databases indicate that certain allyl esters, including ALLYL OCTANOATE, can be irritants to skin and eyes at higher concentrations encountered in industrial settings, underscoring the importance of appropriate handling and use conditions in manufacturing environments. Regulatory evaluations such as those by JECFA consider available toxicological data in the context of expected exposure from food consumption. In the evaluation captured in the JECFA database, ALLYL OCTANOATE was reviewed for safety at levels consistent with typical use as a flavoring agent, and the committee concluded that there was no safety concern at those intake levels. This type of evaluation integrates data from animal studies, chemical structure analysis, and estimated dietary intake to assess whether a compound raises concerns under normal use patterns in food. Because flavoring agents are typically used at very low concentrations relative to total food intake, regulators take into account both the potency of the compound’s sensory effect and the likelihood of human exposure when assessing safety. It is important to distinguish between regulatory safety evaluations and broader health effect claims. Evaluations by expert bodies focus on whether an ingredient can be safely used in foods within defined conditions, not on asserting specific physiological effects beyond safety considerations. For ALLYL OCTANOATE, the available authoritative evaluations support its safety at current use levels but do not provide evidence for specific health benefits or risks in consumer health beyond its classification as a flavoring agent with an acceptable safety profile under regulatory conditions.

Regulatory Status Worldwide

The regulatory status of ALLYL OCTANOATE reflects its inclusion in official lists of flavoring substances that may be used in food under specified conditions. In the United States, the Food and Drug Administration (FDA) permits the use of synthetic flavoring substances and adjuvants under 21 CFR 172.515, which covers a broad class of flavoring agents when used in accordance with good manufacturing practice. This means that formulations containing ALLYL OCTANOATE must use it at the minimum quantity required to achieve the intended flavor effect, and its use must comply with general safety principles outlined in the regulation. Such listings in the CFR indicate that regulators have assessed the available safety evidence and established conditions for its permissible use. In addition to the CFR listing, ALLYL OCTANOATE appears in the FDA’s Substances Added to Food database, which catalogs ingredients that have been evaluated for use in food. At the international level, the Joint FAO/WHO Expert Committee on Food Additives (JECFA) has evaluated ALLYL OCTANOATE as a flavoring agent. In the JECFA database, it is assigned a JECFA number and is listed under the class of flavoring agents. In its evaluation, JECFA concluded that there is no safety concern at current levels of intake when used as a flavoring agent, indicating that the evidence available at the time of review supported its safe use in food within typical consumption patterns. This evaluation helps inform regulatory decisions in countries that reference or adopt JECFA assessments as part of their own food additive approval frameworks. Other regulatory bodies and flavor inventories, including those maintained by industry organizations such as the Flavor and Extract Manufacturers Association (FEMA), provide further context for how ALLYL OCTANOATE is characterized in the flavor industry. While FEMA’s GRAS (Generally Recognized as Safe) determinations are independent from government approvals, they offer expert-reviewed information on the use levels and sensory properties of flavoring agents. Worldwide, the regulatory landscape for flavoring substances like ALLYL OCTANOATE involves a combination of national statutory approvals, expert committee evaluations, and industry-specific assessments that collectively define how and where such ingredients may be used in food products.

Taste And Functional Properties

The taste and functional properties of ALLYL OCTANOATE are rooted in its chemical structure and the sensory response it elicits. As an ester derivative of octanoic acid and allyl alcohol, it exhibits a fruity, tropical aroma and flavor character. It is often described in flavor industry references as contributing nuances reminiscent of pineapple, banana, or other tropical fruits when used at appropriate levels in food applications. These sensory attributes are why it is selected by formulators seeking to evoke fruit-like notes in finished products. The compound’s effectiveness in flavor systems depends on its volatility and its ability to interact with taste and olfactory receptors in the oral and nasal cavities, contributing to both aroma and taste perception. In functional terms, ALLYL OCTANOATE is typically used at low concentration levels, consistent with good flavoring practice. Its solubility characteristics favor dispersion in fats and oils and in some aqueous systems when properly emulsified or dissolved with carriers appropriate for the final product. The compound’s stability can be influenced by conditions such as heat, pH, and exposure to oxidation; in general, esters may hydrolyze under extreme pH or prolonged heating, which can affect their sensory contribution. Thus, formulation scientists consider the processing conditions of the target product when incorporating this flavoring agent to ensure that its sensory properties are retained through manufacturing and shelf life. Because ALLYL OCTANOATE is a volatile compound, it contributes more prominently to aroma than to taste in many contexts. Aroma is a critical component of flavor perception, and even small amounts of volatile flavoring substances can have a notable impact on the overall sensory profile of a product. It is the strategic use of such compounds in balanced flavor blends that enables product developers to achieve nuanced and appealing flavor profiles sought by consumers.

Acceptable Daily Intake Explained

An Acceptable Daily Intake (ADI) is a concept used by food safety authorities to describe an estimate of the amount of a substance that can be ingested daily over a lifetime without appreciable health risk, based on available toxicological data and safety assessments. For many flavoring agents, including compounds like ALLYL OCTANOATE, traditional ADI values may not be established in numeric terms if evaluations conclude that the compound does not pose a safety concern at current levels of intake when used as intended. In the case of ALLYL OCTANOATE, the Joint FAO/WHO Expert Committee on Food Additives (JECFA) reviewed the compound and determined that there was no safety concern at estimated intake levels from its use as a flavoring agent, which means a specific numeric ADI was not assigned but safety at typical exposure levels was supported. It is important to understand that an ADI is not a recommended consumption target or nutritional requirement. Instead, it represents a threshold based on toxicological data below which long-term exposure is considered to be without appreciable risk. For substances with very low use levels and low dietary exposure, regulators may conclude that typical intake does not approach thresholds associated with adverse effects, and thus a numeric ADI is not necessary. This approach reflects the conservative application of safety factors and exposure assessments to ensure that consumer exposure remains well below levels of concern. For food manufacturers and regulators, the concept of ADI reinforces the principle that flavoring agents should be used in accordance with good manufacturing practice and that their contribution to overall dietary exposure remains low. Guidance from expert committees emphasizes that when such compounds are used at levels necessary to achieve the intended flavor effect, they do not pose safety concerns, which provides assurance to both industry and consumers that use is consistent with modern safety evaluation practices.

Comparison With Similar Additives

Flavoring agents that share functional roles with ALLYL OCTANOATE often include other small ester compounds that provide fruit-like sensory characteristics. For example, ethyl butyrate is an ester commonly used to impart pineapple or tropical fruit notes in beverages and candies. Like ALLYL OCTANOATE, ethyl butyrate is volatile and contributes to aroma perception more than taste, and it is also subject to regulatory review as a permitted flavoring substance. The sensory profiles differ, with ethyl butyrate often described as providing more pronounced tropical fruit notes, while ALLYL OCTANOATE may offer a complementary nuance in certain flavor systems. Another compound in this category is isoamyl acetate, which is known for its strong banana-like aroma. Isoamyl acetate is widely used in confectionery and beverage formulations to achieve distinct banana or fruit-associated flavors. Structurally, it differs from ALLYL OCTANOATE in chain length and functional placement, which affects its volatility and sensory character. Both compounds illustrate how small changes in chemical structure influence the sensory properties of flavoring agents and inform their selection by formulators. Additionally, methyl anthranilate is an ester used to evoke grape-like notes in various products. Although it belongs to a different chemical subclass, it shares the functional role of contributing specific aroma characteristics at low concentrations. Comparing these compounds highlights the diversity of flavoring agents available to achieve targeted sensory effects. Formulators choose among such additives based on the desired flavor profile, regulatory status, and compatibility with other ingredients. Understanding the spectrum of flavoring esters and their properties enables food scientists to craft nuanced and appealing flavor experiences for consumers.

Common Food Applications Narrative

In everyday food and beverage products, flavoring agents such as ALLYL OCTANOATE are used to deliver consistent and desirable sensory experiences that consumers recognize and enjoy. This compound, with its fruity and tropical aroma profile, finds application in a variety of categories where such sensory notes are valued. For example, in soft drinks and fruit-flavored beverages, it may be included to augment natural fruit essences or to provide a signature tropical note that appeals to a broad audience. When formulating flavored waters, lemonades, or fruit punches, product developers often rely on well-characterized flavoring agents to round out the overall taste profile. In confectionery products like hard candies, gummies, and gel-based sweets, sensory balance is critical to achieving the intended experience. Ingredients like ALLYL OCTANOATE provide consistent contributions to the fruit-like qualities that define many popular candy flavors. Because confectionery production often involves heating and cooling cycles, formulators choose flavoring agents with known performance characteristics that withstand these processes while delivering the desired sensory impact. Similarly, in dairy-based desserts such as gelatos, puddings, and frozen treats, esters with fruity characters can complement the creamy base and create memorable taste impressions. Baked goods with fruit fillings or glazes also benefit from carefully selected flavoring agents. In these applications, the compound’s compatibility with other ingredients, including sugars and emulsifiers, allows it to enhance the perception of fruitiness without overpowering other elements of the recipe. In each of these product types, the inclusion of a flavoring substance like ALLYL OCTANOATE is guided by formulation goals that prioritize sensory quality and consistency. The result is a wide range of products on store shelves where consumers experience familiar fruit-like flavors that are underpinned by carefully chosen flavoring agents.

Safety & Regulations

FDA

  • Approved: True
  • Regulation: 21 CFR 172.515

EFSA

  • Notes: EFSA-specific evaluation not identified in available sources

JECFA

  • Year: 1996
  • Notes: JECFA evaluation concluded no safety concern at current levels of intake without a numeric ADI assignment

Sources

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