ACETALDEHYDE HEXYL ISOAMYL ACETAL

CAS: 233665-90-2 FLAVORING AGENT OR ADJUVANT

ACETALDEHYDE HEXYL ISOAMYL ACETAL is a synthetic acetal compound used as a flavoring agent in food applications with a fruity and sweet sensory profile.

What It Is

ACETALDEHYDE HEXYL ISOAMYL ACETAL is a chemically defined acetal used in the flavor industry. It is identified by the CAS number 233665-90-2 and is classified as a flavoring agent or adjuvant. Compounds in this class, known as acetals, consist of a central carbon atom bonded to two alkoxy groups, which in the case of this ingredient contribute to its stability and odor profile. This compound appears as a colorless liquid with a characteristic fruity and sweet aroma, often described as apple-like or cognac-like in specialized flavor databases. It is not known to occur naturally in significant amounts but is synthesized for use in flavor formulations. The sensory descriptor for this compound in flavor creation is primarily fruity and sweet, which makes it useful for enhancing or creating specific flavor profiles in food products. In flavour applications, acetals such as ACETALDEHYDE HEXYL ISOAMYL ACETAL are valued for their ability to contribute to complex aroma profiles without introducing off-notes. These chemicals are typically included at low concentrations in finished food products to provide consistent sensory characteristics. Due to its specific functional groups, the compound exhibits relatively low water solubility but is compatible with organic matrices common in beverage and confectionery formulations. Because of its synthetic nature, it is essential that its use and safety are assessed within regulatory frameworks established by international food safety authorities. The chemical structure of ACETALDEHYDE HEXYL ISOAMYL ACETAL includes branched alkyl chains and ether linkages, which influence both its sensory characteristics and physical properties such as vapor pressure and flavor release dynamics during processing. Understanding the identity and classification of this compound helps food scientists use it appropriately in product development and evaluate its regulatory status for legal compliance and consumer safety.

How It Is Made

ACETALDEHYDE HEXYL ISOAMYL ACETAL is produced via organic synthesis involving acetaldehyde and appropriate alcohol precursors under controlled conditions. In general, acetal formation involves reacting aldehydes with alcohols in the presence of an acid catalyst, leading to the formation of the acetal functional group. For this compound, specific alcohol components with hexyl and isoamyl moieties are selected to yield the desired branched acetal structure. This reaction sequence is well understood in industrial organic chemistry and is optimized to favor high yield and purity of the target acetal product. The process used in manufacturing flavor ingredients typically adheres to good manufacturing practices (GMP), ensuring that reaction conditions, catalysts, and purification steps meet stringent quality criteria. After synthesis, the crude product may be purified by distillation or other separation techniques to remove unreacted starting materials and side products. Purity assessment relies on analytical methods such as gas chromatography and mass spectrometry to confirm that the final product meets established identity and purity specifications for flavor use. Because flavor ingredients like ACETALDEHYDE HEXYL ISOAMYL ACETAL are used at low concentrations in finished food products, manufacturers ensure that the technical grade material is free from contaminants that could affect taste or safety. Regulatory authorities may also provide specifications or monographs that define acceptable impurity limits and identity criteria for commercial batches. These manufacturing and quality control processes help ensure that the ingredient performs consistently in food and beverage applications and complies with relevant food safety standards.

Why It Is Used In Food

ACETALDEHYDE HEXYL ISOAMYL ACETAL is used in food primarily for its flavoring properties. It contributes fruity, sweet, and apple-like notes to flavor systems, making it valuable in formulations where such sensory characteristics are desired, such as in beverages, confections, and baked goods. Flavor chemists often select compounds like this acetal to replicate or enhance natural fruit flavors or to balance other sensory components in a flavor blend. The technological role of this ingredient extends beyond simply providing a pleasant aroma; it can influence the overall flavor balance and persistence in complex formulations. Because it is volatile and interacts with other flavor components differently under various conditions, it is chosen for applications that require stability during processing and shelf life. Its compatibility with other common flavoring materials and its performance in different matrices add to its utility in product development. Food manufacturers use compounds like ACETALDEHYDE HEXYL ISOAMYL ACETAL to achieve targeted consumer sensory experiences while maintaining consistency from batch to batch. The ingredient's use levels are carefully controlled by flavorists to ensure the desired impact without overpowering other elements of the food or beverage product. The decision to include such flavoring agents is based on sensory evaluation and regulatory compliance to achieve safe and appealing food products.

Adi Example Calculation

Because an Acceptable Daily Intake (ADI) has not been numerically defined for ACETALDEHYDE HEXYL ISOAMYL ACETAL due to a regulatory conclusion of no safety concern at current levels of intake, it is not appropriate to provide a numerical example calculation. Instead, illustrative exposure considerations typically involve comparing estimated dietary intake based on use levels in various food categories with conservative safety benchmarks established by regulators. For example, in flavor safety assessments, exposure estimates may be derived from reported use levels in categories such as beverages or confectionery, integrated with consumption data. These estimates help assess whether dietary exposure remains well below levels associated with any adverse effects identified in toxicological studies. Such comparative approaches support regulatory evaluations without defining a specific ADI.

Safety And Health Research

Safety assessment of flavoring agents such as ACETALDEHYDE HEXYL ISOAMYL ACETAL focuses on evaluating potential hazards relative to expected dietary exposure. Regulatory and scientific bodies review available toxicological data, including studies of genotoxicity, subchronic toxicity, and metabolic pathways relevant to the compound. Flavoring substances with simple acetal structures are often grouped for evaluation because they share chemical features that influence how they are metabolized and eliminated by the body. According to international evaluation by the Joint FAO/WHO Expert Committee on Food Additives, the compound does not raise safety concerns when used at current intake levels typical for flavoring applications. These assessments consider margins between estimated human exposure and doses associated with no observable adverse effects in relevant studies. The absence of safety concern reflects current evidence and usage patterns rather than an absence of inherent chemical activity; ongoing monitoring and updated evaluations help ensure that new data can be incorporated into risk assessments. It is important to emphasize that regulatory safety assessments are based on rigorous data review and exposure estimation. While some compounds within flavoring categories may have limited toxicological data, grouping approaches and conservative assumptions help ensure protective evaluations. Users and consumers benefit from these structured safety assessment processes, which are designed to prevent adverse health effects related to normal dietary exposure to flavor ingredients.

Regulatory Status Worldwide

Internationally, flavoring substances like ACETALDEHYDE HEXYL ISOAMYL ACETAL are evaluated by food safety authorities to ensure that their use at typical intake levels does not raise safety concerns. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) has evaluated this compound and determined that there is no safety concern at current levels of intake when used as a flavoring agent, based on its assessment in the context of flavor additives. This evaluation is reported in JECFA’s Technical Report Series, which provides a safety conclusion for the compound in flavor use contexts. Such evaluations consider available toxicological data and exposure estimates to assess potential risk. In the United States, the ingredient appears in regulatory substance databases maintained by the Food and Drug Administration (FDA), indicating its recognition as a chemical substance, but there is no specific CFR food additive listing explicitly authorizing its use; therefore, regulatory status must be confirmed through applicable flavor use regulations and GRAS notification procedures. In the European Union, scientific opinions such as those from EFSA consider groups of related flavoring substances, often concluding that structurally related acetals evaluated by JECFA do not raise safety concerns at estimated intake levels. However, specific EU listings or restrictions may vary and require reference to the Union list of flavorings and source documents. These international evaluations support responsible use of the ingredient within regulatory frameworks.

Taste And Functional Properties

ACETALDEHYDE HEXYL ISOAMYL ACETAL has a distinct sensory profile characterized by fruity and sweet notes, often described as reminiscent of apple or cognac-like nuances. These characteristics make it valuable for flavor creation where such sensory impressions are sought. The functional behavior of the compound in food systems depends on its chemical structure, which influences volatility, solubility, and stability under various processing conditions. When incorporated into flavor blends, this acetal typically exhibits moderate volatility, meaning that it contributes to the aroma perceived upon consumption without dissipating too quickly during manufacturing or storage. Its solubility profile favors organic phases, and it is relatively insoluble in water, which can affect how it partitions between phases in complex food matrices. This property is important for formulation scientists to consider, as it influences how the compound interacts with other ingredients and how it is perceived sensorially. In terms of heat and pH stability, acetals generally demonstrate tolerance to a range of conditions, though very acidic or highly heated environments can lead to hydrolysis over time. Flavorists account for such functional considerations when selecting ingredients for products that undergo pasteurization, baking, or prolonged storage. By understanding both the sensory and physicochemical behavior of ACETALDEHYDE HEXYL ISOAMYL ACETAL, product developers can optimize its use to enhance overall flavor quality while maintaining performance throughout processing and shelf life.

Acceptable Daily Intake Explained

An Acceptable Daily Intake (ADI) is a regulatory concept used by food safety authorities to indicate the amount of a substance that can be consumed daily over a lifetime without appreciable health risk. For many flavoring agents, specific numeric ADIs are not established if the compound is shown to pose no safety concern at typical levels of intake in foods. In the case of ACETALDEHYDE HEXYL ISOAMYL ACETAL, JECFA’s evaluation concluded that there is no safety concern at current levels of intake, which means that the data reviewed did not require the establishment of a numerical ADI value. It is important to understand that an ADI is not a recommended intake level for consumers; rather, it is a risk assessment benchmark used by regulators to guide safe use. When an authoritative body determines that current use does not pose safety concerns, food manufacturers are still expected to adhere to good manufacturing practice and use the flavoring compound at levels consistent with achieving the desired sensory effect without exceeding typical use levels evaluated by safety panels.

Comparison With Similar Additives

ACETALDEHYDE HEXYL ISOAMYL ACETAL can be compared with other acetal-based flavoring agents that also contribute fruity or sweet sensory notes in food systems. For instance, ethyl acetate is a simple acetal commonly used in fruit and candy flavors; it provides a light, fruity aroma but is structurally simpler and more volatile. In contrast, ACETALDEHYDE HEXYL ISOAMYL ACETAL has a larger branched structure that influences its volatility and functional performance in complex flavor blends. Another related compound is diethyl acetal (1,1-diethoxyethane), which also contributes fruity notes and is used in certain beverage flavors. Diethyl acetal is smaller and more volatile than ACETALDEHYDE HEXYL ISOAMYL ACETAL, leading to different release profiles during consumption. Comparing such compounds helps flavorists choose the right ingredient based on desired aroma strength, persistence, and matrix compatibility. Both compounds are evaluated for safety and use levels within regulatory frameworks, and their functional differences guide appropriate selection in product development.

Common Food Applications Narrative

ACETALDEHYDE HEXYL ISOAMYL ACETAL finds application in a variety of food and beverage categories where fruity flavor accents are desired. Its characteristic sweet and apple-like aroma components make it a candidate for inclusion in nonalcoholic beverages such as fruit-flavored soft drinks and juice blends, where it can enhance the perception of fruitiness without adding sweetness itself. In confectionery products, this compound may be used to support fruit or dessert flavor profiles, contributing to a more rounded and appealing aromatic experience. Baked goods represent another category where such flavor ingredients can be valuable. In items like fruit-filled pastries or sweet rolls, careful incorporation of targeted aroma compounds like this acetal helps create a sensory impression that complements the inherent flavors of the product. Additionally, dairy-based desserts and flavored dairy beverages can benefit from the nuanced sweetness that this compound contributes when used at low, controlled levels. Beyond these examples, ACETALDEHYDE HEXYL ISOAMYL ACETAL may also be used in sauces, condiments, and snack seasonings where a hint of sweetness and fruitiness can balance saltier or more savory elements. Across these applications, the ingredient is chosen by flavorists based on sensory goals and formulation requirements, and its inclusion is guided by established flavor industry practices. Because it is typically used at very low concentrations, consumers experience its effects primarily through aroma rather than changes in nutritional composition or texture.

Safety & Regulations

FDA

  • Notes: No specific FDA food additive regulation citation found in current evidence.

EFSA

  • Notes: EFSA evaluations consider groups of related acetals and have not assigned a specific E number or numeric ADI.

JECFA

  • Year: 2007
  • Notes: JECFA concluded no safety concern at current levels of intake without defining a numeric ADI.

Sources

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