ACETYL METHYL CARBINYL ACETATE

CAS: 4906-24-5 FLAVORING AGENT OR ADJUVANT

Acetyl Methyl Carbinyl Acetate is a flavoring agent or adjuvant used to impart creamy, buttery, or dairy notes in foods and beverages.

What It Is

Acetyl Methyl Carbinyl Acetate is an organic ester chemical compound identified by the Chemical Abstracts Service (CAS) number 4906-24-5 and classified as a flavoring agent or adjuvant used in food formulation. It belongs to a broader class of small ester molecules that contribute distinctive sensory impressions, often described as creamy, buttery, or dairy-like, when incorporated into food and beverage products. This compound is structurally related to other ketone esters and can exist under several synonymous chemical names, which reflect its functional groups and molecular arrangement. Flavoring agents like Acetyl Methyl Carbinyl Acetate are typically added in minute amounts to provide desirable taste and aroma characteristics to a wide range of edible products. In regulatory inventories, it may be referenced within flavoring substance registries that list chemicals evaluated for safety in food use, although such listings do not always equate to specific numeric regulatory limits. Although common in the flavor industry, Acetyl Methyl Carbinyl Acetate itself does not possess a numeric identification within the International Numbering System (INS/E-number) for food additives, as its status is principally tied to its evaluation and acceptance as a flavoring under expert panel assessments rather than a broad additive category number.

How It Is Made

The manufacturing of Acetyl Methyl Carbinyl Acetate involves organic chemical synthesis that typically centers on esterification reactions between an alcohol and an acid derivative. In general terms, this process may begin with a precursor ketone such as acetoin, which is chemically converted into an acetate ester through controlled reaction with acetic acid or an acetic acid derivative under conditions that promote ester bond formation. Industrial production methods prioritize efficiency and the attainment of high purity to meet food-grade specifications. Production facilities that handle flavoring agents like Acetyl Methyl Carbinyl Acetate will operate under good manufacturing practices (GMP) standards relevant to food ingredients and flavor compounds. Quality control measures often include chromatographic analysis to confirm the absence of unwanted side products and to ensure that the final material meets established chemical identity profiles. Solvent recovery and catalyst use are managed carefully in modern synthesis workflows to mitigate waste and reduce environmental impact. Once synthesized, this compound is typically purified by distillation or other separation techniques to remove residual reactants and byproducts. The resulting product is then formulated or blended with carriers or solvents appropriate for its intended use in food and beverage applications. While the specific proprietary methods used by individual manufacturers may vary, the fundamental organic chemistry principles governing ester synthesis remain consistent across the industry.

Why It Is Used In Food

Acetyl Methyl Carbinyl Acetate is used in food and beverage formulations primarily for its ability to enhance or impart specific sensory attributes that contribute to the overall flavor profile of a product. Flavoring agents of this type are often employed to evoke creamy, dairy-like notes that can complement sweet, baked, or confectionary applications. Because subtle flavor nuances can significantly influence consumer perception, formulators may select Acetyl Methyl Carbinyl Acetate to achieve desired aromatic complexity within low concentrations. Functional reasons for its use include its compatibility with other flavor ingredients and its capacity to integrate well into emulsions, syrups, and other complex food matrices. In beverage applications, it can provide background notes that round out fruit or dessert-like flavors. In bakery and dairy-inspired products, this compound can help replicate or reinforce natural flavor impressions without adding bulk or sweetness. Flavoring agents like Acetyl Methyl Carbinyl Acetate are integral to the flavor chemist's toolkit, enabling targeted modulation of taste and aroma. Because human perception of flavor results from a combination of chemical cues interacting with sensory receptors, even trace amounts of a compound such as this can play an important role in shaping the consumer experience of a food or drink product.

Adi Example Calculation

When a numeric acceptable daily intake (ADI) is not established for a flavoring agent because it has been evaluated as not presenting a safety concern at typical intake levels, an illustrative calculation would focus on hypothetical exposure rather than a comparison to a numeric threshold. For example, if an adult consumer weighing 70 kilograms ingests a flavored beverage containing Acetyl Methyl Carbinyl Acetate at a concentration of one part per million, the resulting exposure would equate to microgram quantities of the substance per day. To illustrate, a product consumed at one liter per day with one part per million of flavoring agent corresponds to roughly one milligram of total flavor chemical in that daily intake. When distributed across the body weight of a 70‑kilogram adult, this exposure would be approximately 0.014 milligrams per kilogram body weight per day. Because expert evaluations have concluded that typical exposure levels for this compound in foods do not raise safety concerns, this illustrative calculation serves to contextualize the relative magnitude of intake rather than to assess compliance with a specific numeric ADI. This example underscores how low usage levels commonly associated with flavoring agents translate to very small amounts relative to body weight, helping to explain why expert panels may determine that safety margins are adequate without defining a numeric ADI.

Safety And Health Research

Safety research and regulatory evaluation of Acetyl Methyl Carbinyl Acetate focus on ensuring that its use as a flavoring agent does not present an undue health risk at levels typical of consumption. Expert panel assessments consider toxicological data, exposure estimates, and structural alerts to determine whether the compound raises concerns for genotoxicity, systemic toxicity, or other endpoints of relevance to human health. The available summary indicates that, within the context of flavor use, no safety concern has been identified at current levels of intake. Toxicological research for flavoring agents generally encompasses studies on acute toxicity, repeated-dose toxicity, and metabolic fate, although specific primary studies for every individual flavor compound may not be published in the open scientific literature. Instead, evaluations often rely on read‑across data from structurally related compounds and expert judgment. The absence of a specific numeric acceptable daily intake for this compound reflects the nature of the assessment rather than an indication of unknown hazard. Regulators and expert panels also consider potential sensory irritation or sensitization when assessing safety for food use. Manufacturers and formulators take such considerations into account when determining appropriate usage levels in consumer products. Ongoing monitoring and reassessment by regulatory bodies ensure that new evidence can be incorporated into safety evaluations over time.

Regulatory Status Worldwide

Regulatory evaluation of Acetyl Methyl Carbinyl Acetate as a flavoring agent has been conducted by recognized expert bodies within the context of flavor safety assessment. In the United States, this compound appears in the Food and Drug Administration’s (FDA) Substances Added to Food inventory, indicating that it has been evaluated by the Flavor and Extract Manufacturers Association (FEMA) Expert Panel and is listed for flavoring use under that inventory without a specific numeric regulation citation. Inclusion in this inventory does not equate to an explicit FDA regulation number but reflects that it has been reviewed for intended use as a flavoring substance. Internationally, the Joint FAO/WHO Expert Committee on Food Additives (JECFA) has evaluated this compound within the broader category of flavoring agents. According to summary information from flavor additive databases, the evaluation did not identify a safety concern at current levels of intake when used as a flavoring agent, but a specific numeric acceptable daily intake was not established. The evaluation year d in available assessments is 1998, though this reflects the year of review rather than a numeric limit. Within the European Union, formal assignment of an E-number under the food additives regulations does not appear to be documented for this specific compound. National food safety authorities may reference expert panel evaluations or flavor inventories when assessing the use of this substance within their jurisdictions. Regulatory frameworks vary globally, with many authorities relying on expert assessments and established inventories to inform permissible use levels in foods.

Taste And Functional Properties

Acetyl Methyl Carbinyl Acetate contributes distinct sensory notes often characterized as creamy, buttery, or dairy-like, which can enhance the flavor complexity of edible products. The sensory impression it provides is typically described through tasting and olfactory evaluation panels within the flavor industry. This compound’s estery characteristics can complement a range of base flavors, especially in formulations that seek to replicate milk, cream, or dessert nuances. Functionally, this compound is soluble in common flavoring solvents such as propylene glycol or ethanol, facilitating its incorporation into liquid flavor concentrates. It can also be blended within oil-based or emulsified systems, depending on the application. Like many small esters, it is volatile enough to contribute aroma without residual taste at intended use levels, but stable enough under normal food processing conditions to withstand mixing, heating, or blending operations. The balance between volatility, solubility, and sensory impact is central to understanding how this compound behaves in food systems. Its specific physicochemical properties allow it to interact with other flavor ingredients, thereby reinforcing or softening certain sensory perceptions. Overall, taste and functional properties of Acetyl Methyl Carbinyl Acetate make it a useful component in flavor design where creamy, rounded, or dairy-inspired characteristics are desirable.

Acceptable Daily Intake Explained

An acceptable daily intake (ADI) represents an estimate of the amount of a substance in food or drinking water that can be ingested daily over a lifetime without posing a significant risk to health. ADIs are typically expressed on a body weight basis and are derived from toxicological studies using uncertainty factors to account for variability between individuals and species. For many flavoring agents, ADIs are not established in a numeric form when expert panels conclude that the substance does not raise safety concerns at levels of intake typical for flavor use. In such cases, the regulatory conclusion is based on the assessment of available evidence rather than on a specific numeric threshold. For Acetyl Methyl Carbinyl Acetate, summary information from expert evaluations indicates that its use as a flavoring agent does not pose a safety concern at current levels of intake, which implies that typical dietary exposure is considered sufficiently low to be within an acceptable safety margin. This type of assessment reflects the expert judgment that, based on structure, metabolism, and available toxicological data, the compound does not warrant a quantifiable ADI. It is important to understand that the absence of a numeric ADI does not mean unrestricted use; rather, it means that, within the context of evaluated flavoring applications and typical consumption patterns, the substance is not expected to pose health risks. ADI concepts help regulators and industry alike maintain levels of flavor usage that are consistent with consumer safety.

Comparison With Similar Additives

Acetyl Methyl Carbinyl Acetate can be compared to other ester‑type flavoring agents, such as ethyl acetate and isoamyl acetate, which also contribute distinct sensory notes to food and beverage formulations. Ethyl acetate is a simple ester with fruity characteristics commonly used in fruit‑flavored products, whereas isoamyl acetate is known for its banana‑like aroma. In contrast, Acetyl Methyl Carbinyl Acetate provides creamy, buttery nuances that are less fruity and more compatible with dairy or dessert flavor profiles. Another related compound is ethyl butyrate, which imparts pineapple‑like fruity notes; formulators might choose between such esters based on the desired flavor direction of a product. While these compounds share similar functional groups that influence volatility and solubility, their odor profiles differ significantly, leading to varied applications. In terms of regulatory evaluation and safety context, many small ester flavoring agents undergo similar expert panel assessments that consider typical exposure and structural analogy rather than establishing specific numeric ADIs. This approach reflects the collective understanding within flavor safety science that structural and metabolic similarities can inform safety conclusions across related compounds without redundant testing.

Common Food Applications Narrative

In practical food and beverage applications, Acetyl Methyl Carbinyl Acetate is used to achieve specific aromatic and flavor effects that align with consumer expectations for certain products. For example, when formulating dessert-like beverages, creamy confections, or dairy-inspired snacks, chefs and flavorists may select this compound as part of a complex blend to impart subtle buttery or creamy sensations. Its inclusion can help round out flavor profiles in products that mimic milk or cream without the use of actual dairy ingredients, offering flexibility for formulation. In bakery applications, this compound may support flavor development in items such as cakes, pastries, or frostings, where a balanced background note enhances the overall sensory experience. It can also appear in frozen desserts, flavored syrups, or ready-to-drink beverages where nuanced flavor layering is required. Beverage products that emulate fruit-and-cream or dessert-type flavor combinations may also benefit from the presence of Acetyl Methyl Carbinyl Acetate within their flavoring systems. Although the levels used in finished products are typically very low and without nutritional contribution, the influence of this compound on perceived taste and aroma can be significant when integrated thoughtfully. Its application is not limited to sweet products; some savory or snack-type formulations may leverage its creamy undertones to balance other flavor elements. In all cases, the focus is on enhancing consumer perception through targeted flavor modulation rather than altering fundamental food chemistry.

Safety & Regulations

FDA

  • Notes: Included in the FDA Substances Added to Food inventory based on FEMA evaluation but no specific regulation citation is provided in available sources

EFSA

  • Notes: No EFSA specific evaluation or E-number assignment could be verified for this compound

JECFA

  • Year: 1998
  • Notes: JECFA evaluation did not establish a numeric ADI but indicated no safety concern at current intake levels
  • Adi Display: Not established numeric; evaluated as no safety concern at current intake levels

Sources

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