DECANAL DIMETHYL ACETAL

CAS: 7779-41-1 FLAVORING AGENT OR ADJUVANT

DECANAL DIMETHYL ACETAL (CAS 7779-41-1) is a synthetic flavoring agent used in foods for its citrus and sweet sensory notes. It is permitted under certain food additive regulations.

What It Is

DECANAL DIMETHYL ACETAL is a chemical compound identified by CAS number 7779-41-1 and known by several other names including 1,1-dimethoxydecane, capraldehyde dimethyl acetal, and decane, 1,1-dimethoxy-. It belongs to the class of acetals, specifically linear aliphatic acetals formed by the reaction of an aldehyde with an alcohol. As a flavoring agent or adjuvant, it is used in the formulation of flavor blends to impart fruity, citrus, or sweet aromatic properties to food and beverage products. Its inclusion in flavor formulations is generally based on its sensory contribution rather than nutritional value. Regulatory frameworks in some regions list it among synthetic flavoring substances that may be used in food in accordance with good manufacturing practice. The compound is typically a colorless to pale yellow liquid with characteristic sensory notes that can complement citrus and fruit flavor profiles.

How It Is Made

The synthesis of DECANAL DIMETHYL ACETAL generally involves the chemical reaction of decanal, a ten-carbon aldehyde, with methanol in the presence of an acid catalyst. This reaction produces the acetal functional group through the condensation of the aldehyde with two molecules of methanol, forming the dimethyl acetal. The reaction conditions, such as temperature, catalyst type, and solvent choice, are selected to favor the formation of the desired acetal product while minimizing side reactions. After reaction completion, purification steps such as distillation or solvent extraction are employed to isolate the acetal with high purity suitable for flavor use. Industrial processes are designed to meet quality specifications for flavor ingredients, including controls on residual reactants and byproducts. The resulting compound is typically a clear liquid that is stable under normal storage conditions and soluble in organic solvents used in flavor formulation. Safety controls during manufacture ensure that workers are protected from exposure to chemical intermediates and that the final product meets food-grade standards.

Why It Is Used In Food

DECANAL DIMETHYL ACETAL is used in food primarily for its ability to contribute desirable sensory characteristics to flavor formulations. As a flavoring agent or adjuvant, it enhances citrus, fruity, and sweet flavor profiles, making it suitable for applications in beverages, confections, baked goods, and other consumer foods. Its function in food formulations is to provide complexity and balance to flavor profiles where fresh, citrus-like notes are desired. Because flavor perception is influenced by volatile organic compounds at low concentrations, acetals like DECANAL DIMETHYL ACETAL are effective at delivering specific aroma and taste cues without significantly affecting the nutritional composition of the food. Its inclusion in a formulation is based on sensory evaluation and compatibility with other flavor components. Technological reasons for use include its compatibility with flavor carriers and its stability in certain processing conditions. Formulators select ingredients like DECANAL DIMETHYL ACETAL to achieve a consistent sensory experience across batches, ensuring consumer expectations for taste and aroma are met.

Adi Example Calculation

An illustrative example of how acceptable daily intake (ADI) concepts are applied can be described without prescribing personal intake advice. Suppose a hypothetical ADI were established for a food flavoring compound at a certain number of milligrams per kilogram of body weight per day; regulators would then use an individual’s body weight to estimate a daily allowance that is considered safe. For instance, for a hypothetical compound with an ADI of X mg/kg body weight, a person weighing Y kilograms would have an estimated daily intake threshold of X times Y milligrams. This calculation is purely illustrative and does not reflect a specific ADI for DECANAL DIMETHYL ACETAL because expert evaluations have focused on typical exposure levels rather than defining a numeric ADI. The purpose of such examples is to explain how ADI values are related to body weight and exposure, and how they are used in risk assessment for food additives generally.

Safety And Health Research

Safety evaluations of flavoring agents such as DECANAL DIMETHYL ACETAL focus on their toxicological profile at levels relevant to human dietary exposure. Regulators and expert committees review available data on acute toxicity, repeated-dose studies, and any evidence of potential effects such as genotoxicity or organ-specific toxicity. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) has assessed this compound in the context of flavoring agents and concluded that there is no safety concern at current levels of intake when used as intended in food. Such evaluations consider typical use levels in food products and the estimated dietary exposure of consumers. Safety assessments also examine the compound’s metabolism and breakdown products to determine whether they pose any potential risk. Regulatory evaluations do not suggest adverse health effects at the concentrations used in food flavoring applications, but ongoing review of new scientific data is a standard part of regulatory practices. Overall, safety research supports the controlled use of DECANAL DIMETHYL ACETAL in food flavorings subject to compliance with food additive regulations.

Regulatory Status Worldwide

In the United States, DECANAL DIMETHYL ACETAL is listed within the regulation for synthetic flavoring substances and adjuvants under 21 CFR 172.515, which permits the use of such substances in food provided they are used in the minimum quantity required to produce the intended effect and in accordance with good manufacturing practice. This regulatory citation identifies a class of flavoring agents that may be safely used when conditions are met but does not itself specify numerical use levels. In addition to national food additive regulations, international expert bodies such as the Joint FAO/WHO Expert Committee on Food Additives (JECFA) have evaluated the safety of DECANAL DIMETHYL ACETAL as a flavoring substance and indicated that there is no safety concern at current levels of intake when used for this purpose. Regulatory frameworks may vary across jurisdictions, and in some regions, compositional or labeling requirements apply when flavoring agents are included in consumer food products. Adherence to local food and flavoring regulations ensures that the compound is used within established safety parameters and that products are compliant with applicable standards.

Taste And Functional Properties

The sensory properties of DECANAL DIMETHYL ACETAL are characterized by citrus, fruity, and sweet aromatic notes that can enhance the overall perception of flavor in a product. When used in flavor formulation, it contributes subtle top notes that complement other citrus and fruit-derived flavor compounds. Its functional attributes include moderate volatility, which allows it to contribute aroma at typical use levels, and compatibility with organic solvents and carriers used in flavor delivery systems. It has limited solubility in water but dissolves readily in ethanol and other organic solvents commonly used in flavor blends, enabling its integration into a wide range of food and beverage matrices. From a formulation perspective, DECANAL DIMETHYL ACETAL is valued for its stability under conditions that do not involve extreme heat or strong acids, which can degrade sensitive flavor compounds. Its performance in products is often assessed through sensory panels and analytical methods to ensure it delivers the intended organoleptic effect. Although it does not serve a nutritive function, its contribution to flavor enhances consumer acceptance and enjoyment of products.

Acceptable Daily Intake Explained

Accepted daily intake (ADI) is a concept used by regulatory bodies and expert committees to express a level of daily exposure to a substance that is considered safe over a lifetime. For many food flavoring agents, including DECANAL DIMETHYL ACETAL, expert evaluations focus on safety at typical intake levels rather than establishing a specific numeric ADI. In the case of this compound, available evaluations by international expert committees have indicated no safety concern at current estimated levels of use in foods. The absence of a defined numeric ADI reflects the expert judgment that exposure from intended uses does not pose a toxicological risk at those levels. When numeric ADIs are established for substances, they are derived from toxicological studies and include safety factors to account for uncertainties, ensuring a wide margin of protection. For consumers, the concept of ADI helps frame the idea that regulatory assessments consider both the amount consumed and the compound’s safety profile.

Comparison With Similar Additives

When comparing DECANAL DIMETHYL ACETAL with other flavoring agents, it is useful to consider additives that contribute similar sensory characteristics or functional roles. For example, other acetals and esters such as ethyl butyrate and methyl anthranilate are also used to impart fruity or citrus-like notes in flavor formulations, providing top-note aroma components that enhance overall flavor balance. Each of these substances has distinct sensory profiles that influence formulation choices; ethyl butyrate may convey tropical fruit nuances, while DECANAL DIMETHYL ACETAL adds citrus and sweet undertones. Regulatory evaluations of flavoring agents consider both sensory function and safety profiles, and many compounds in this category are permitted under relevant food additive regulations when used in accordance with good manufacturing practice. Another compound, neral (cis-citral), offers citrus aroma but is a natural constituent of citrus oils rather than a synthetic acetal. Formulators may choose between natural and synthetic flavoring agents based on sensory goals, regulatory status, and cost. Understanding these differences helps food scientists select appropriate ingredients for targeted flavor outcomes in formulated products.

Common Food Applications Narrative

DECANAL DIMETHYL ACETAL finds use in a variety of food and beverage products where citrus or fruity flavor notes are desired. It is often included in flavor blends for soft drinks, fruit-flavored beverages, and alcoholic beverages to impart natural citrus-like top notes that are reminiscent of orange or similar fruits. In confections such as hard candies and gummies, the compound can enhance sweet and fruity flavor profiles, contributing to a balanced sensory experience. Baked goods may use flavoring agents containing DECANAL DIMETHYL ACETAL to reinforce fruit or citrus notes in fillings, icings, and dough-based products. Dairy-based desserts and frozen treats can benefit from its sensory attributes, adding complexity to fruit or sweet cream flavors. Beverage concentrates and syrups also incorporate such flavoring agents for consistency in flavor delivery upon dilution. The versatility of DECANAL DIMETHYL ACETAL in formulations stems from its ability to harmonize with other natural and synthetic flavor components, making it a useful tool for product developers seeking to achieve specific taste profiles. Its use is dictated by product category, processing conditions, and the desired sensory effect in the finished food or beverage.

Safety & Regulations

FDA

  • Approved: True
  • Regulation: 21 CFR 172.515

EFSA

  • Notes: No specific EFSA numeric authorization or ADI available.

JECFA

  • Notes: JECFA evaluation indicates no safety concern at current intake levels but does not specify a numeric ADI.

Sources

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