POLYOXYETHYLENE (600) DIOLEATE

CAS: 977028-99-1 SURFACE-ACTIVE AGENT

POLYOXYETHYLENE (600) DIOLEATE is a synthetic surface-active agent authorized by the U.S. FDA as an indirect food additive permitted under specified sections of Title 21 of the Code of Federal Regulations for use in food contact applications.

What It Is

POLYOXYETHYLENE (600) DIOLEATE is a synthetic surface-active agent belonging to a class of non-ionic surfactants known as polyoxyethylene esters. In the context of food regulation, it is recognized as an indirect food additive with specified permitted uses in the United States. It is identified by the Chemical Abstracts Service number 977028-99-1 and has synonyms such as PEG-12 DIOLEATE, POLYOXYETHYLENE 600 DIOLEATE, and POLYETHYLENE GLYCOL 600 DIOLEATE. These alternate names reflect the underlying chemical structure, which consists of polyethylene glycol esters of oleic acid. As a surface-active agent, this compound functions to reduce surface tension between materials, which is a desirable characteristic in applications such as antifoaming and emulsification. Regulatory listings note its inclusion in specific sections of Title 21 of the Code of Federal Regulations, indicating defined conditions under which it may be used in food-related processes or in materials that contact food products. Although it is not assigned a specific E-number in the European Union, its classification as a surface-active agent informs its technological purpose and regulatory context. Surface-active agents like this are valued for their ability to modify the interface between food components such as oils and water, which underpins their use in processes like defoaming during production or coating applications. Because these functionalities are integral to the processing environment rather than the food itself, regulatory frameworks typically specify how and where such substances may be used rather than permitting their direct inclusion in food products at arbitrary levels. In summary, POLYOXYETHYLENE (600) DIOLEATE is a non-ionic surfactant with defined industrial and food contact applications under regulatory authorization, and its use is closely governed by safety and compliance standards established by food safety authorities.

How It Is Made

The production of POLYOXYETHYLENE (600) DIOLEATE involves chemical synthesis anchored in the esterification of a polyethylene glycol with a long-chain fatty acid. Polyethylene glycols are polymers of ethylene oxide, and in this case, the average molecular weight is approximately 600, which denotes the length of the polymer chain and its subsequent hydrophilic character. The hydrophilic polyethylene glycol chain is reacted with oleic acid, a long-chain monounsaturated fatty acid, under controlled conditions that promote ester bond formation between the carboxyl group of the fatty acid and the terminal hydroxyl group of the polyethylene glycol. This esterification yields a diester where two oleic acid molecules are bonded to the polyethylene glycol backbone, resulting in the surface-active properties characteristic of this class of compounds. The controlled synthesis process typically involves the use of catalysts and elevated temperatures to drive the reaction toward completion while minimizing side reactions. After the esterification, the resulting product undergoes purification steps to remove residual reactants, catalysts, and byproducts. Purification may involve techniques like vacuum stripping or solvent extraction to achieve a product meeting required technical specifications, especially when intended for food contact applications where purity criteria are critical. The final material is assessed for assay, typically seeking high levels of active component consistent with its intended function as a surfactant. Material characterization often includes checks on factors like average molecular weight distribution and absence of impurities that could affect safety or performance. In regulated food contact scenarios, manufacturers must adhere to Good Manufacturing Practices (GMP) and documented specifications to ensure that the substance meets regulatory definitions and is fit for authorized uses. The chemical synthesis and purification approach underscores the precision required to produce a consistent and reliable surface-active agent while conforming to regulatory expectations for industrial and food contact substances.

Why It Is Used In Food

The use of POLYOXYETHYLENE (600) DIOLEATE in food-related applications is driven by its functional role as a surface-active agent, which enables it to modify the interface between liquids and solids or between immiscible liquids. In food manufacturing processes, surface-active agents are often utilized to facilitate processes like defoaming during heating or agitation, emulsification when combining oily and aqueous phases, or as an aid in coating applications. These functions are technological in nature and are aimed at improving process efficiency, product consistency, or material handling rather than directly adding taste or nutritional value to the food itself. The designation of this compound as an indirect food additive reflects this application context: it is typically used where food contact materials or processing environments benefit from its surface-active properties. For example, during the production of beverages or other liquid foods, frothing or excessive foam can interfere with manufacturing equipment or impede consistent filling. A surface-active agent with defoaming capacity helps reduce foam formation to maintain process efficiency. Similarly, in packaging materials that contact food, surface-active agents may be incorporated into coatings to facilitate release or prevent unwanted adhesion of food components. Because the substance operates at interfaces, it can assist in processes where dispersion of one phase into another is necessary, such as in certain emulsification steps for ingredient blending. Regulatory listings under specific sections of Title 21 of the Code of Federal Regulations establish where and how such substances may be used, often with defined limits or conditions to ensure that any migration into food remains within safe and controlled bounds. It is important to emphasize that the use of this surface-active agent is typically associated with applications that assist manufacturing and material performance, rather than as a direct ingredient in consumer-facing food formulations. This contextualizes why regulatory frameworks place it in categories like secondary direct food additives or indirect food additives: the primary goal of using POLYOXYETHYLENE (600) DIOLEATE is to support food production or contact material functionality, with safety evaluations centered on potential exposure from contact rather than intentional consumption. This distinction informs how risk assessments and regulatory decisions are structured for such substances.

Adi Example Calculation

To illustrate how an Acceptable Daily Intake (ADI) concept might apply in a hypothetical scenario, consider a generic ADI of X mg per kilogram of body weight per day for a particular substance. If an individual weighs 70 kilograms, multiplying the numeric ADI by body weight yields a lifetime safe intake estimate of X times 70 mg per day. In the case of substances like POLYOXYETHYLENE (600) DIOLEATE, which are authorized as surface-active agents in food contact materials, actual exposure is determined by potential migration into foods, which is often minimal and controlled through regulatory conditions of use rather than direct inclusion in food formulations. This illustrative calculation demonstrates how body weight factors into evaluating whether typical exposure levels remain below a safety threshold. It emphasizes that ADI is a conceptual benchmark used by regulators to frame safe exposure levels rather than a recommendation for consumption. Because specific numeric ADI values for this additive may not be publicly specified in available regulatory listings, the illustration serves to clarify the methodology regulators use to assess risk and ensure that authorized uses do not result in exposure exceeding safe limits under normal conditions.

Safety And Health Research

Safety evaluations for additives like POLYOXYETHYLENE (600) DIOLEATE focus on the potential for exposure and any associated risks from migration into food under intended use conditions. Regulatory frameworks such as the U.S. Food and Drug Administration’s review process consider data on chemical identity, functional use, and toxicological information to establish conditions of use that ensure consumer safety. For surface-active agents authorized as indirect food additives, toxicological assessments typically explore endpoints such as systemic toxicity, genotoxicity, and potential effects related to chronic exposure. Because such substances are not intended for direct consumption but may contact food via processing aids or packaging materials, exposure assessments account for potential migration levels under realistic use scenarios. The FDA’s inclusion of POLYOXYETHYLENE (600) DIOLEATE in specific sections of the Code of Federal Regulations reflects an understanding that available data support its safe use under defined conditions. The regulatory listing serves as evidence that safety considerations, including potential health hazards and exposure levels, have been factored into authorization decisions. Beyond regulatory evaluations, scientific research on similar surface-active agents often examines their absorption, distribution, metabolism, and excretion (ADME) profiles, as well as any effects observed in animal studies at doses far exceeding typical human exposure from food contact. These studies help characterize the margin of safety and inform risk management decisions. While detailed toxicological literature specific to POLYOXYETHYLENE (600) DIOLEATE may be limited in the public domain, its structural similarity to other polyethylene glycol esters and established use in industrial and processing contexts provide a body of comparative information that regulators can consider. This approach, rooted in weight-of-evidence evaluations, allows for risk assessments even when direct human data are unavailable. Given the indirect nature of exposure and the controlled conditions under which migration into food is evaluated, the overall safety profile for authorized uses of this surface-active agent aligns with regulatory expectations for materials that contact food. Continued monitoring and compliance with regulatory conditions, including purity criteria and migration limits, help ensure that any potential health risks remain negligible relative to established safety standards.

Regulatory Status Worldwide

In the United States, POLYOXYETHYLENE (600) DIOLEATE is recognized by the U.S. Food and Drug Administration (FDA) as an indirect food additive permitted for specified uses in food contact applications. It is listed in the inventory of indirect food additives under Title 21 of the Code of Federal Regulations (CFR), specifically under sections 173.340 (relating to defoaming agents permitted in food for human consumption) and 176.200 (relating to defoaming agents used in coatings of paper and paperboard components of food packaging). These regulatory citations define the conditions and contexts in which the substance may be used, with the overarching principle that any migration into food must remain within safe and controlled limits as determined by the regulatory framework. The inclusion of POLYOXYETHYLENE (600) DIOLEATE in these sections reflects a reviewed and documented understanding of its technical function and potential exposure scenarios in food contact environments, ensuring that its use aligns with safety standards established by the FDA. Source links provide direct access to the relevant regulatory listings in the CFR and the FDA’s inventory of indirect food additives. In other jurisdictions, the regulatory status of surface-active agents with similar functions is typically governed by local food safety authorities and materials standards. For example, in the European Union, substances intended for use in food contact materials are subject to authorization under EU Regulation (EC) No 1935/2004 and related implementing measures that establish lists of permitted substances, specific migration limits, and conditions of use. While POLYOXYETHYLENE (600) DIOLEATE itself may not be assigned a specific E-number or explicit inclusion on the Union list of authorized food additives, its use in food contact materials would be considered within the framework for food contact substances, meaning that compliance with migration limits and material specifications is required for approval. In practice, manufacturers seeking to use such surface-active agents in EU food contact applications would need to provide data demonstrating safety and compliance with applicable material standards. Internationally, bodies such as the Joint FAO/WHO Expert Committee on Food Additives (JECFA) evaluate food additives and provide specifications and safety assessments that inform Codex Alimentarius standards. While a specific JECFA evaluation for POLYOXYETHYLENE (600) DIOLEATE may not be readily identified in publicly available databases, the general approach of JECFA to developing specifications and safety guidance for additives and processing aid substances provides a context in which national and regional regulators can assess and harmonize their own regulatory decisions. Participation in JECFA evaluations supports global alignment on safety assessment methodologies and reinforces the principle that surface-active agents intended for food contact use are subject to rigorous review to ensure consumer protection.

Taste And Functional Properties

POLYOXYETHYLENE (600) DIOLEATE, reflecting its classification as a surface-active agent, does not contribute significant taste or flavor to food products at the levels consistent with its authorized use scenarios. Its functional properties stem from its amphiphilic molecular architecture, which features both a hydrophilic polyethylene glycol segment and a lipophilic fatty acid-derived segment. This dual affinity underlies its ability to interact at interfaces between polar and non-polar phases, enabling it to reduce surface tension and stabilize or destabilize emulsions depending on the context. While sensory characteristics like taste and odor are not primary considerations for this compound in food contact use, its physicochemical behavior influences the performance of processing systems where interphase interactions are critical. In practical terms, surface-active agents like POLYOXYETHYLENE (600) DIOLEATE may influence the texture or mouthfeel of food products only indirectly, and such effects are typically not the intended function in regulated use cases. Because it is not used as a flavoring or direct food additive in most food formulations, sensory impact at authorized use levels is minimal and is not a driver for its application. Instead, formulators value properties such as solubility, compatibility with other processing aids, and stability under varying temperatures and pH conditions. The compound’s solubility profile, influenced by the balance between the hydrophilic and hydrophobic moieties, determines how effectively it disperses in aqueous or lipid-rich environments during processing. Its stability under typical manufacturing conditions—such as exposure to heat or agitation—ensures consistent behavior during operations like defoaming or emulsification. Understanding these functional properties helps clarify why substances in this class are regulated for specific uses: the focus is on their technical performance at interfaces and their potential to migrate from contact materials into food, which informs safety evaluations rather than sensory profiles. This emphasizes a separation between functional utility in processing or packaging and direct contributions to food quality attributes like taste or aroma.

Acceptable Daily Intake Explained

Acceptable Daily Intake (ADI) is a risk assessment concept used by regulatory bodies to estimate the amount of a substance that can be consumed daily over a lifetime without appreciable health risk. It is expressed in milligrams of the substance per kilogram of body weight per day and is derived from toxicological studies, typically in animals, where a no-observed-adverse-effect level (NOAEL) or benchmark dose is identified and then divided by safety factors to account for uncertainties. For substances like POLYOXYETHYLENE (600) DIOLEATE that function as surface-active agents and are authorized as indirect food additives, the focus of safety assessment is often on potential migration from food contact materials rather than direct dietary intake. This means that exposure estimates are based on realistic scenarios of contact and migration into food under intended use conditions. Regulators use ADI values to establish limits that protect public health by ensuring that even high-end consumers of foods are unlikely to exceed safe exposure levels. An ADI is not a recommended level of consumption but rather a threshold that incorporates conservative assumptions to maintain a wide margin of safety. For indirect additives, actual exposure is typically orders of magnitude lower than the ADI because migration into food is tightly controlled through regulatory specifications and material standards. When specific numeric ADI values are not established for a given compound in publicly accessible evaluations, regulatory listings—such as those found in the U.S. Code of Federal Regulations—serve as evidence that the substance’s authorized uses are supported by safety data and risk management decisions. In these cases, compliance with conditions of use and monitoring of migration into food help ensure that total exposure remains within safe limits as defined by regulatory frameworks. Understanding ADI in this context underscores that regulatory approval for use is contingent upon both technical necessity and a safety assessment that accounts for potential consumer exposure. It helps place the use of surface-active agents like POLYOXYETHYLENE (600) DIOLEATE within a scientific risk management framework that prioritizes consumer protection while enabling functional benefits in food production and contact materials.

Comparison With Similar Additives

Surface-active agents and emulsifiers with functions similar to POLYOXYETHYLENE (600) DIOLEATE include compounds like polysorbates, mono- and diglycerides of fatty acids, and lecithin, which are used across food processing applications to stabilize emulsions or reduce surface tension. Polysorbates, for example, are polyoxyethylene derivatives of sorbitan esters that perform emulsification and dispersing functions in products like salad dressings and baked goods. Mono- and diglycerides of fatty acids are widely used as emulsifiers to improve texture and extending shelf life in bakery and dairy products. Lecithin, a naturally occurring phospholipid, is often used where a label-friendly emulsifier is desired. While these substances share a general role in modifying interactions between oil and water phases, their regulatory classifications and authorized uses differ. Some, like lecithin and certain mono- and diglycerides, are directly included in food formulations and contribute to product structure and texture, whereas POLYOXYETHYLENE (600) DIOLEATE is typically authorized as an indirect additive for processing aids or food contact applications. This distinction reflects differences in exposure pathways, regulatory frameworks, and functional intent. Lecithin and mono- and diglycerides, for example, are generally assigned Acceptable Daily Intake values based on direct dietary exposure, while surface-active agents in food contact materials are regulated with conditions of use designed to minimize migration and exposure. Comparing these additives highlights how functional categories intersect with regulatory definitions: direct food additives are evaluated for dietary exposure and sensory impact, whereas indirect additives are evaluated for contact-related exposure and technical utility. Understanding these differences helps clarify why distinct regulatory approaches exist for substances with superficially similar functions, ensuring that safety assessments and exposure considerations align with how each additive is used in food systems.

Common Food Applications Narrative

POLYOXYETHYLENE (600) DIOLEATE is incorporated into food-related processes primarily where surface-active behavior supports the engineering and material performance aspects of production rather than serving as a direct ingredient in consumer food formulations. In modern food manufacturing environments, processing aids and contact material additives play an essential role in ensuring consistent, efficient operations across a wide array of products. For example, during the large-scale production of carbonated beverages or liquid dairy products, controlling foam formation during filling and packaging steps can prevent overflows, maintain throughput, and reduce waste. A surface-active agent with defoaming capacity addresses this by interfering with bubble formation and stabilizing the liquid surface, which helps maintain production line efficiency. In addition to beverage processing, surface-active agents are used in the manufacture of paperboard or coatings that come into contact with food. Packaging materials often need to conform to stringent performance criteria, including resistance to moisture, controlled release of contents, and ease of handling. POLYOXYETHYLENE (600) DIOLEATE may be part of coatings applied to paperboard to achieve antifoaming or release characteristics that improve the performance of packaging during filling and sealing. By enabling smoother interfaces between materials and aiding in the application of coatings, it contributes indirectly to the quality and safety of packaged foods. Another common context involves industrial-scale emulsification steps where blending of oil-based and water-based components is necessary for producing flavors, dressings, or ingredient blends. While other emulsifiers are often selected for direct formulation functions, surface-active agents help condition equipment surfaces or assist in preliminary dispersion steps. In each of these scenarios, the additive is not consumed directly as a flavoring or structural ingredient but operates within the production environment to support technological outcomes. Regulatory frameworks recognize this functional distinction by authorizing such substances under specific sections of food contact materials regulations, which delineate permitted uses, application conditions, and any necessary limitations to control potential migration into food. These frameworks ensure that while the additive contributes to processing performance, potential consumer exposure remains within safe and controlled parameters, consistent with public health protection goals.

Safety & Regulations

FDA

  • Approved: True
  • Regulation: 21 CFR 173.340 and 21 CFR 176.200

EFSA

  • Notes: EFSA specific authorization and numeric ADI not found in available deep links

JECFA

  • Notes: No specific numeric ADI or year for JECFA evaluation found in available sources

Sources

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