BENZALDEHYDE PROPYLENE GLYCOL ACETAL

CAS: 2568-25-4 FLAVORING AGENT OR ADJUVANT

BENZALDEHYDE PROPYLENE GLYCOL ACETAL is a synthetic flavoring agent identified by CAS 2568-25-4 and listed under FDA 21 CFR 172.515 as a permitted synthetic flavoring substance for use in food.

What It Is

BENZALDEHYDE PROPYLENE GLYCOL ACETAL is a synthetic organic compound used as a flavoring agent or adjuvant in food products and formulations. It is identified chemically by the CAS Number 2568-25-4 and is also referenced under various systematic and trade-related names reflecting its chemical structure, including isomeric descriptors of the 1,3-dioxolane ring and phenyl substituents. As a member of the class of flavoring agents, it is utilized to impart specific sensory characteristics to food and beverage products in which its organoleptic profile contributes to the overall flavor complexity of the formulation. The compound belongs to the broader category of acetals, which are organic functional groups formed by the reaction of aldehydes with alcohols, and in this case arises from benzaldehyde and propylene glycol precursors. This structural identity underpins its use as a flavoring ingredient, where it interacts with other constituents in flavor blends to achieve desired sensory effects. In food formulation and regulatory contexts, flavoring agents are distinct from nutrients and food additives that impact texture, color, or preservation; instead, they function primarily to provide or enhance taste and aroma. BENZALDEHYDE PROPYLENE GLYCOL ACETAL is specifically engineered for its compatibility with a wide range of food matrices, and its inclusion in regulatory lists such as the FDA’s 21 CFR 172.515 framework indicates its recognition within safety and use guidelines for flavoring substances. Within the flavor industry, such synthetic agents are often evaluated based on organoleptic properties, volatility profiles, and stability under typical processing conditions, which inform how they are used in complex flavor systems. The presence of this compound in regulatory listings highlights its role not only in imparting flavor but also in meeting defined safety parameters for consumption as part of specified food applications. The detailed regulatory classification reflects extensive consideration by food safety authorities regarding its technical function, identity, and permissible use conditions.

How It Is Made

The manufacture of BENZALDEHYDE PROPYLENE GLYCOL ACETAL typically involves a chemical synthesis process that condenses benzaldehyde with propylene glycol. In a controlled reaction environment, these precursor molecules undergo a condensation reaction in which the aldehyde functional group of benzaldehyde reacts with the diol functional groups of propylene glycol to form an acetal linkage. This reaction generally takes place in the presence of acid catalysts that facilitate the removal of water as a by-product and drive the equilibrium toward acetal formation. The resulting compound is a 1,3-dioxolane derivative, featuring a five-membered ring structure that incorporates both the phenyl group from benzaldehyde and the propylene moiety from propylene glycol. This synthesis route is representative of a broader class of acetal formation reactions used in industrial organic chemistry and is favored due to its efficiency in producing flavoring intermediates suitable for food and fragrance applications. After synthesis, the crude product is subjected to purification processes such as distillation, solvent extraction, and chromatographic separation to isolate the desired isomeric forms and to achieve a high-purity substance appropriate for use in food-grade applications. Purity specifications are critical in this context because residual reactants, catalysts, or by-products could impact both the sensory qualities and safety profile of the additive. Quality control measures include analytical verification of structure and composition using techniques such as gas chromatography, mass spectrometry, and nuclear magnetic resonance spectroscopy, which confirm that the product meets defined chemical identity criteria and impurity limits. The purified BENZALDEHYDE PROPYLENE GLYCOL ACETAL is then formulated into flavor blends or other carriers for incorporation into various food products. The synthesis and purification workflows are designed to conform to good manufacturing practices, ensuring that the final additive is suitable for its intended use. These practices encompass not only chemical process optimization but also documentation, traceability, and adherence to regulatory standards that govern the production of food ingredients. As with many flavoring agents, the production of BENZALDEHYDE PROPYLENE GLYCOL ACETAL embodies an intersection of organic chemistry methodology and food industry quality assurance, allowing producers to deliver a consistent, stable compound that contributes specific sensory characteristics to food and beverage formulations.

Why It Is Used In Food

BENZALDEHYDE PROPYLENE GLYCOL ACETAL is incorporated into foods primarily for its role as a flavoring agent or adjuvant that contributes distinctive sensory attributes to processed foods, beverages, and culinary preparations. Flavoring agents are essential components in many modern food systems because they enable manufacturers to create or enhance desirable taste profiles, mask off-notes from other ingredients or processing steps, and meet consumer expectations for flavor consistency. In particular, this compound imparts nuanced aromatic and taste sensations that can resemble or complement natural flavors such as almond or cherry-like notes, which are valued in complex flavor formulations used for confectionery, baked goods, beverages, and other consumables. The selection of a specific flavoring agent like BENZALDEHYDE PROPYLENE GLYCOL ACETAL is guided by both its sensory contribution and its compatibility with other constituents in a given product matrix, ensuring that the overall flavor profile meets target specifications. Flavor chemists and formulators often use combinations of natural extracts and synthetic compounds to achieve a balanced and stable flavor profile. Synthetic flavoring agents such as BENZALDEHYDE PROPYLENE GLYCOL ACETAL offer advantages including precise control over concentration, reproducibility across production batches, and the ability to tailor formulations to meet specific sensory characteristics that natural sources alone may not reliably provide. In addition, synthetic flavoring ingredients can be more cost-effective and sustainable than extracting rare or seasonally variable natural flavor compounds. The presence of this compound in food applications reflects its utility in creating appealing sensory experiences that align with consumer preferences and market trends, whether in traditional confectionery, beverage flavorings, or other processed food categories. Because it functions purely as a flavoring agent, BENZALDEHYDE PROPYLENE GLYCOL ACETAL does not contribute nutritional value or play a role in preservation, texture modification, or color enhancement. Instead, its purpose is specifically to influence the taste and aroma dimensions of food products, making them more appealing or distinctive. In regulatory frameworks such as the United States Code of Federal Regulations, such compounds are listed under sections that govern flavoring agents and related substances, indicating that their use is both recognized and permitted when employed according to defined good manufacturing practices. The utility of this compound in food formulations underscores the importance of precise flavor design in the competitive landscape of food product development, where sensory impact can significantly influence consumer acceptance and market success.

Adi Example Calculation

To illustrate how acceptable daily intake (ADI) considerations might apply in a conceptual context, consider a hypothetical scenario where a flavoring agent had a defined numeric ADI (note that BENZALDEHYDE PROPYLENE GLYCOL ACETAL does not have a specified numeric ADI assigned by regulators but is considered safe under current use conditions). If a given additive were assigned an ADI of X milligrams per kilogram of body weight per day, a person weighing 70 kilograms could theoretically consume up to 70 times X milligrams of that compound daily without exceeding the ADI. For instance, if a flavoring agent had an ADI of 1 milligram per kilogram body weight per day, a 70-kilogram person could consume up to 70 milligrams of the substance each day over a lifetime without appreciable health risk, according to that ADI. In reality, regulators only assign numeric ADI values when there is sufficient toxicological and exposure data to support a quantitative threshold. In the case of BENZALDEHYDE PROPYLENE GLYCOL ACETAL, evaluations by expert committees have indicated that current exposure levels from food use do not raise safety concerns, and specific numeric ADI values have not been established. Instead, regulatory frameworks emphasize conditions of use and good manufacturing practices to ensure safety. Nonetheless, the ADI concept provides a useful framework for understanding how safety margins are built into regulatory assessments. If this compound or a similar flavoring agent were found to require an ADI based on future data, the process outlined above would apply: multiply the numeric ADI by the consumer's body weight to estimate a conservative daily exposure limit. It is important to emphasize that such calculations are illustrative and not personal health advice. They demonstrate how ADI values function in regulatory science, offering a quantitative benchmark for lifetime exposure that helps guide ingredient use levels in food. In the absence of a numeric ADI for this compound, regulatory listings and evaluations inform producers and regulators about conditions under which the substance can be safely used without the need for explicit intake limits.

Safety And Health Research

Regulatory and safety research on BENZALDEHYDE PROPYLENE GLYCOL ACETAL focuses on understanding its toxicological properties, exposure potential, and implications for human consumption within the context of defined use levels in food products. Evaluations by authoritative bodies such as the Joint FAO/WHO Expert Committee on Food Additives (JECFA) and industry panels like the Flavor and Extract Manufacturers Association (FEMA) involve reviews of available scientific data on acute and chronic toxicity, absorption and metabolism, and potential adverse effects at estimated intake levels. These evaluations aim to determine whether there are safety concerns at levels of exposure typical of food use and to establish whether the compound can be safely incorporated into food formulations under good manufacturing practices. In essence, safety research synthesizes information from controlled studies, structural analog assessments, and exposure modeling to inform regulatory decisions and usage guidelines. One aspect of safety assessment involves reviewing the results of toxicological studies in animal models, which provide data on potential effects following ingestion at various dose levels. Such studies explore endpoints including acute toxicity, effects on organ systems, and potential for developmental or reproductive toxicity. While the details of specific studies on BENZALDEHYDE PROPYLENE GLYCOL ACETAL can vary, the overall conclusion from regulatory reviews, including the summary by JECFA under evaluation Number 839, indicates that the compound does not raise safety concerns at current levels of intake when used as a flavoring agent. This conclusion takes into account the fact that exposure from typical food use is orders of magnitude lower than doses associated with adverse effects in controlled testing environments. turn1(国际化学品安全卡网站) Exposure assessment is another critical component of safety research, wherein estimated intake levels are compared with thresholds derived from toxicological data. For flavoring agents, these estimates often involve calculations based on typical use concentrations in food categories and consumption patterns within target populations. By comparing estimated human exposure with levels determined from animal studies, safety assessors apply conservative margins of safety to ensure that even high-end consumers are not at risk. Regulatory bodies use these margins, along with data on metabolic pathways and potential bioaccumulation, to determine whether explicit numerical intake limits or acceptable daily intake (ADI) values are necessary. In the case of BENZALDEHYDE PROPYLENE GLYCOL ACETAL, expert evaluations have not identified a need for specific numeric ADI limits, instead indicating that existing use conditions and proposed good manufacturing practices are sufficient to ensure safety. Overall, safety and health research on BENZALDEHYDE PROPYLENE GLYCOL ACETAL emphasizes a rigorous, evidence-based approach to evaluating potential risks. The integration of data from toxicology, exposure modeling, and regulatory science informs decisions that balance technical utility in food formulations with consumer safety. Continued monitoring of new scientific data and revisions to standards based on emerging evidence are part of ongoing efforts by regulators and industry scientists to maintain high levels of food safety and consumer protection.

Regulatory Status Worldwide

BENZALDEHYDE PROPYLENE GLYCOL ACETAL is recognized globally as a permitted flavoring agent under specific regulatory frameworks that govern food additive use. In the United States, this compound is included within the list of synthetic flavoring substances and adjuvants in Title 21 of the Code of Federal Regulations, Section 172.515, which outlines the conditions under which such synthetic flavoring agents may be safely used in food. This regulatory designation reflects a comprehensive evaluation by food safety authorities that the compound, when used according to good manufacturing practices and at concentrations necessary to achieve its intended technical effect, does not pose an undue safety risk in food applications. The listing in 21 CFR 172.515 indicates that BENZALDEHYDE PROPYLENE GLYCOL ACETAL is among numerous synthetic substances that are permitted for direct addition to food as flavoring agents, provided they adhere to the conditions described in the regulation, including use at the minimum required to achieve the desired flavor effect. turn(电子联邦法规) Internationally, regulatory assessments by organizations such as the Joint FAO/WHO Expert Committee on Food Additives (JECFA) have evaluated BENZALDEHYDE PROPYLENE GLYCOL ACETAL as a flavoring agent under JECFA Number 839. JECFA’s evaluation concluded that the compound does not raise safety concerns at current levels of intake when used as a flavoring agent, indicating a general acceptance of its safety profile in food applications. This evaluation, which is part of the broader set of assessments performed by JECFA on numerous flavoring agents, underscores its status within global food safety frameworks and reflects consideration by expert scientists of available toxicological data. turn1(国际化学品安全卡网站) In addition to regulatory listings, trade and industry organizations such as the Flavor and Extract Manufacturers Association (FEMA) provide detailed assessments of flavoring substances, including use levels and safety considerations, which inform manufacturers and regulators about appropriate applications. The FEMA Reference Number for BENZALDEHYDE PROPYLENE GLYCOL ACETAL is 2130, indicating its recognition within the flavor industry and the availability of GRAS determinations or expert panel evaluations that support its use. Such assessments are often incorporated into regulatory dossiers and inform guidelines for flavor use in various jurisdictions. (FEMA) Overall, the regulatory status of BENZALDEHYDE PROPYLENE GLYCOL ACETAL reflects a body of scientific evaluation and acceptance that permits its use as a flavoring agent under defined conditions. It is essential for manufacturers to adhere to local and international regulations and usage guidelines to ensure compliance with food safety standards in all markets where the compound is used.

Taste And Functional Properties

BENZALDEHYDE PROPYLENE GLYCOL ACETAL is valued in flavor chemistry for its unique combination of taste and functional properties that enhance the sensory profile of food and beverage applications. Organoleptically, this compound is associated with floral and sweet aromatic notes, which can be described as reminiscent of almond-like or cherry-like flavor facets that enrich complex flavor systems. Such sensory characteristics make it a useful component in formulations where subtle aromatic enhancements are desired without overpowering the base flavors. The balance between sweet and floral notes allows it to complement a wide variety of other flavoring agents, both natural and synthetic, enabling flavorists to craft nuanced profiles for products ranging from confectionery to beverages. Functionally, BENZALDEHYDE PROPYLENE GLYCOL ACETAL exhibits properties that support its integration into diverse food matrices. It is generally stable under typical processing conditions, including moderate heat and pH ranges encountered during cooking, baking, and beverage production. Its moderate volatility ensures that it can contribute to aroma perception during consumption without dissipating too rapidly during formulation or storage. Additionally, its chemical structure, which includes a dioxolane ring, imparts sufficient solubility in both alcoholic and hydroalcoholic systems, making it compatible with beverage applications. In aqueous systems, solubility is more limited than in organic solvents, but when used in appropriate concentrations and supported by carriers or solvents common in flavor blends, it distributes effectively throughout typical product formulations. In terms of sensory function, this compound interacts synergistically with other flavoring agents to create more complex and layered taste experiences. The interaction between different flavor components is a key aspect of flavor design, whereby individual molecules contribute specific notes that, in combination, produce a cohesive and appealing overall profile. BENZALDEHYDE PROPYLENE GLYCOL ACETAL’s role is often to provide subtle top or middle notes that round out the sensory character of the product and enhance consumer perception. Because sensory profiles are highly dependent on concentration and product context, careful calibration by flavor professionals ensures that the functional properties of this compound are leveraged effectively without overwhelming other flavor elements. As with all flavoring agents, its contribution to taste and aroma is a product of both its inherent sensory properties and the skillful integration into a broader flavor network within the food or beverage product.

Acceptable Daily Intake Explained

The concept of an acceptable daily intake (ADI) is a cornerstone of food safety assessment, representing an estimate of the amount of a substance that can be ingested daily over a lifetime without posing appreciable health risk. ADI is typically expressed in milligrams of substance per kilogram of body weight per day and is derived from toxicological studies where thresholds for adverse effects are identified in animal models. Safety factors are then applied to account for interspecies differences and variability among humans, resulting in a conservative value that provides a wide margin of safety. For many flavoring agents, including BENZALDEHYDE PROPYLENE GLYCOL ACETAL, regulatory evaluations consider whether a specific ADI value is necessary based on available toxicological and exposure data. In the case of BENZALDEHYDE PROPYLENE GLYCOL ACETAL, expert evaluations by the Joint FAO/WHO Expert Committee on Food Additives (JECFA) have concluded that it does not raise safety concerns at current levels of intake when used as a flavoring agent. This type of conclusion reflects a comprehensive review of toxicological data, exposure estimates, and structural analog information, leading to a determination that typical food use does not justify assigning a numeric ADI. Instead, safety assessments focus on ensuring that the compound is used within good manufacturing practices, where it contributes the intended technical effect at minimal effective concentrations. The absence of a specific numeric ADI does not imply that higher exposures are safe; rather, it indicates that existing evidence does not necessitate defining a precise intake limit under typical usage conditions. For consumers and non-expert audiences, understanding the ADI concept involves recognizing that these assessments are designed to protect public health by estimating daily exposure that is unlikely to cause harm based on scientific evidence. Even without a specific numeric ADI value assigned by regulators, the use of BENZALDEHYDE PROPYLENE GLYCOL ACETAL in food flavoring is governed by regulatory frameworks that require adherence to good manufacturing practices and conditions that ensure minimal necessary use. Thus, safety considerations inherent in ingredient approval and regulation serve a similar protective function by establishing boundaries for use that minimize potential risk from chronic exposure. In practice, food manufacturers and regulators work together to ensure that flavoring agents such as this are used responsibly and within the context of comprehensive safety evaluations that prioritize consumer health.

Comparison With Similar Additives

Flavoring agents similar to BENZALDEHYDE PROPYLENE GLYCOL ACETAL include compounds such as benzaldehyde, benzyl acetate, and ethyl maltol, each contributing distinct sensory characteristics to food formulations. Benzaldehyde, derived from the aromatic aldehyde functional group, is recognized for its pronounced almond-like aroma and is widely used in confectionery and beverage applications where such notes are desired. Compared to BENZALDEHYDE PROPYLENE GLYCOL ACETAL, which imparts subtler floral and sweet nuances, benzaldehyde tends to be more potent in its aromatic presence, requiring careful calibration in flavor blends to avoid overpowering other components. Benzyl acetate is another flavoring agent known for its fruity and floral profile, often described as reminiscent of jasmine or pear. In contrast to the acetal structure of BENZALDEHYDE PROPYLENE GLYCOL ACETAL, benzyl acetate’s ester functional group contributes a different volatility and sensory experience, typically used where bright, fruity notes are desired. Ethyl maltol is a sweet-enhancing flavor compound frequently used in confectionery, bakery, and beverage products to reinforce sweet perceptions. While it does not share the structural features of the acetal compound, ethyl maltol illustrates how different classes of flavoring agents can be combined to achieve layered taste experiences, with each component contributing specific sensory effects. In practical flavor formulation, these compounds are selected based not only on their sensory attributes but also on their stability, solubility, and regulatory status. BENZALDEHYDE PROPYLENE GLYCOL ACETAL’s stability under typical processing conditions and compatibility with other flavor molecules make it a valuable constituent in complex profiles, particularly where floral and sweet undertones are desired alongside other primary flavor notes. The interplay among these flavoring agents exemplifies the art and science of flavor design, where individual compounds are chosen for their complementary contributions to the overall sensory experience. This comparison underscores the diversity of flavoring agents available and highlights how structural differences translate into unique functional and sensory roles within food and beverage products.

Common Food Applications Narrative

In practical food product development, BENZALDEHYDE PROPYLENE GLYCOL ACETAL finds application across a variety of categories where nuanced flavor enhancement is important to the overall sensory appeal. Flavorists and formulators often incorporate this compound into confectionery products such as candies and chocolates to accentuate sweet aromatic notes that complement sugar and cocoa bases. In baked goods, its ability to contribute subtle almond or cherry-like nuances can enhance the perceived richness of flavor without detracting from the primary taste components of flour, sugar, and fat. Similarly, in beverage applications, including soft drinks, ready-to-drink teas, and flavored waters, this flavoring agent supports the creation of layered taste profiles that attract consumer interest. Beyond traditional sweet applications, BENZALDEHYDE PROPYLENE GLYCOL ACETAL is also used in more complex culinary formulations such as dessert mixes, frostings, and flavored syrups where a balance of aromatic characteristics contributes to a distinctive taste experience. The compound’s compatibility with a range of other flavor molecules allows it to be blended into spice and extract mixtures, enhancing herbal or botanical components in specialty beverage and food items. Because it does not impart significant texture or color changes, its inclusion in these applications focuses strictly on sensory enhancement, allowing product developers to fine-tune flavor without unintended effects on other quality attributes. The integration of this compound into food products is performed within established regulatory and quality frameworks that ensure both safety and consistency. Food manufacturers rely on ingredient specifications and usage guidelines to determine appropriate inclusion levels that achieve desired flavor outcomes while maintaining adherence to good manufacturing practices. As with all flavoring ingredients, consumer perception of taste and aroma is a key driver in product choice, and the use of BENZALDEHYDE PROPYLENE GLYCOL ACETAL reflects industry efforts to create appealing and differentiated products across a broad spectrum of food categories. Its role in confectionery, bakery, beverage, and specialty flavor systems exemplifies how specific flavor molecules contribute to the sensory complexity and enjoyment that consumers expect from modern processed foods.

Safety & Regulations

FDA

  • Notes: Included in FDA list of synthetic flavoring substances permitted for use; specific approval status and conditions of use reflect regulatory listing under 21 CFR 172.515. turn(
  • Regulation: 21 CFR 172.515

EFSA

  • Notes: No specific EFSA E-number or numeric ADI identified in available authoritative sources.

JECFA

  • Notes: JECFA evaluation indicates no safety concern at current intake levels; numeric ADI not explicitly assigned on d summary. turn1(

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