CELLULOSE, DIETHYLAMINOETHYL

CAS: 9013-34-7

CELLULOSE, DIETHYLAMINOETHYL is a modified cellulose polymer derivative identified by CAS 9013-34-7 that functions as an ion-exchange material and technical agent in industrial and biochemical applications.

What It Is

CELLULOSE, DIETHYLAMINOETHYL is a chemically modified derivative of cellulose. The cellulose backbone is functionalized with diethylaminoethyl groups to produce a polymer that exhibits ion-exchange properties. This compound is known by multiple synonyms, all referring to the same structured polymer described by the CAS registry number 9013-34-7. As a derivative of cellulose, the molecule retains a polysaccharide backbone that is common to naturally occurring cellulose but is modified to introduce cationic sites along the polymer chain. Cellulosic derivatives are a broad class of compounds widely used across industrial sectors, including separation science, chromatography, and potentially food processing aids. In the context of processing aids, the polymeric nature of this ingredient means that it is not well absorbed intact in the human gastrointestinal tract, much like other celluloses that pass through the digestive system largely unchanged. The category of modified celluloses encompasses many structural variants where cellulose is chemically altered to confer different functionalities. In the case of diethylaminoethyl substitution, the polymer becomes useful in ion-exchange processes where charged species can be captured or separated based on electrostatic interactions. The cationic character of diethylaminoethyl cellulose allows it to bind negatively charged molecules under appropriate conditions. While this additive is referenced in regulatory contexts such as materials used as fixing agents for immobilization of enzyme preparations (per 21 CFR 173.357 in the United States), its core identity remains that of a polymeric cellulose derivative designed for specific technical uses rather than direct sensory or nutritive roles in foods. Diethylaminoethyl cellulose is not described with an international E-number specific to food additive use in the European Union, and official safety evaluations treat cellulosic derivatives as a group rather than providing a unique number for each specific derivative. In global regulatory databases, modified celluloses may be listed as having acceptable specifications or general safety profiles without detailed toxicological thresholds, reflecting a long history of use and low bioavailability as large, poorly absorbed polymeric substances.

How It Is Made

The manufacturing process for CELLULOSE, DIETHYLAMINOETHYL begins with purified cellulose, which is a polymer composed of glucose units linked by beta-1,4-glycosidic bonds. In a typical etherification reaction, cellulose is treated with reagents that introduce diethylaminoethyl functional groups onto the cellulose polymer backbone. This process involves deprotonation of hydroxyl groups on the cellulose chain followed by reaction with diethylaminoethyl chloride or related alkylating agents, resulting in substitution of the diethylaminoethyl moiety onto available cellulose hydroxyl sites. Reaction conditions such as solvent, temperature, and catalyst can affect the degree of substitution and distribution of functional groups along the polymer chain. Following the chemical modification, the polymer is subjected to purification steps to remove unreacted reagents, byproducts, and solvents. This often involves thorough washing, filtration, and drying stages to isolate a stable, solid form of diethylaminoethyl cellulose. The final product is commonly supplied as a microgranular or pre-swollen ion-exchange material with defined particle size distributions used for technical applications. Manufacturers adhere to quality control protocols that monitor chemical composition, degree of substitution, and physical properties such as particle size and moisture content. These specifications ensure that the modified cellulose performs consistently in intended applications, such as chromatographic separations or as immobilization matrices in biochemical processes. While detailed proprietary methods can vary between producers, the underlying chemistry is rooted in well-established polymer modification techniques. As with other industrial polymers, safety and handling procedures are part of manufacturing standards to mitigate exposure during production, using appropriate personal protective equipment and process controls. There is no widely recognized standard manufacturing process for food-grade versions of this derivative because regulatory use in foods is limited to specific technical roles, and general food additive manufacturing protocols may differ from those in research or industrial contexts. Because cellulose derivatives share a common origin and many of the same production hurdles—such as ensuring consistent substitution and removing residual reactants—the quality assurance frameworks developed by industry guide the reliable production of these modified polymers.

Why It Is Used In Food

CELLULOSE, DIETHYLAMINOETHYL itself is not typically used for direct sensory functions in foods like sweetening or flavoring. Its use in food processing, where permitted, is technical and indirect. Specifically, regulatory texts in the United States refer to diethylaminoethyl cellulose as a material that may be used as a fixing agent in the immobilization of enzyme preparations used to manufacture ingredients such as high fructose corn syrup. In these contexts, the polymer facilitates the stable attachment of enzyme preparations to solid supports or matrices, enabling efficient catalytic action without dissolving into the processing stream. When used under the conditions specified in secondary direct additive regulations, the polymer helps maintain enzyme stability and performance during the transformation of raw materials into processed ingredients. The rationale for using modified celluloses like diethylaminoethyl cellulose in technical roles stems from their polymeric nature and surface functionalities, which enable interactions with biological or chemical species in controlled ways. For example, in immobilized enzyme systems, the presence of charged functional groups along the cellulose backbone can support electrostatic binding or retention of enzyme molecules, enhancing the operational longevity and reusability of the preparation. These technical functionalities offer manufacturers tools to optimize production efficiency rather than contributing flavor, texture, or nutritional value to the final food product consumed by individuals. In broader food processing contexts, various cellulose derivatives serve as stabilizers, thickeners, or carriers, but any consideration of diethylaminoethyl cellulose in such roles must adhere strictly to local regulatory allowances. Its primary use remains outside typical consumer-facing food additives; it is valued for process facilitation in industrial settings. Where regulatory frameworks allow, its inclusion as a processing aid does not mean it functions as an ingredient that alters the sensory or compositional attributes of foods directly.

Adi Example Calculation

As an illustrative example to explain the ADI concept in general terms, consider a hypothetical substance with an ADI of 10 mg/kg body weight per day. For an adult weighing 70 kilograms, this would equate to 700 mg of that substance per day as a conservative threshold below which no health concerns are anticipated. In contrast, modified cellulose derivatives used as processing aids are often present only in trace amounts, if at all, in finished food products, making actual exposure far lower than any illustrative ADI. Because diethylaminoethyl cellulose is used in immobilized enzyme systems that are typically separated from final food products, consumer exposure levels would be negligible relative to the illustrative calculation above. This example is for conceptual understanding only and does not reflect an established ADI for this compound.

Safety And Health Research

Safety assessments of cellulose derivatives, including diethylaminoethyl cellulose, focus on the inherent properties of high molecular weight polymers that are poorly absorbed in the gastrointestinal tract. In safety evaluations of related modified celluloses, regulatory panels have observed low systemic bioavailability and limited potential for genotoxicity or chronic toxicity in experimental systems. The general principle guiding these assessments is that large polymeric substances that are not absorbed intact do not present the same systemic exposures as small molecules, thereby reducing potential health risks associated with typical metabolic processes. This property has contributed to regulatory conclusions of 'ADI not specified' for groups of modified celluloses, indicating that within expected exposure levels, no safety concerns have been identified in the literature. Cellulosic polymers and their derivatives have been studied for a variety of endpoints related to toxicity, including acute toxicity, reproductive and developmental effects, and potential for mutagenicity. Across a range of modified cellulose compounds, studies have consistently shown low acute toxicity and no evidence of significant genotoxic effects under standard testing conditions. Where data gaps exist, regulators employ read-across approaches, extrapolating safety profiles from structurally similar substances within the modified cellulose family. This approach leverages shared physicochemical characteristics and metabolic behavior, acknowledging that differences in substitution patterns often do not dramatically alter absorption or systemic exposure outcomes. Despite this backdrop, specific safety data for diethylaminoethyl cellulose as a food contact or processing agent are limited, owing to its specialized use. Regulatory evaluations prioritize conditions of use that minimize consumer exposure and emphasize process control to ensure that residual levels in final products remain negligible. The cumulative weight of evidence from polymer toxicology and regulatory reviews supports the conclusion that modified celluloses used appropriately in industrial food processes do not present meaningful health risks at trace residual levels in food products.

Regulatory Status Worldwide

In the United States, CELLULOSE, DIETHYLAMINOETHYL is referenced in federal food regulations under provisions that govern materials used as fixing agents in the immobilization of enzyme preparations. Specifically, 21 CFR 173.357 lists diethylaminoethyl-cellulose among substances that may be safely used for immobilizing glucose isomerase enzyme preparations in the manufacture of high fructose corn syrup, subject to prescribed conditions. This regulatory text affirms a limited, technical allowance rather than a broad approval for use as a conventional food additive. Such provisions require that manufacturers ensure that residues or functional impacts outside the specific process context are minimized. In other regulatory jurisdictions, authoritative evaluations of cellulosic derivatives encompass broad classes of modified celluloses. European safety assessments of modified celluloses have concluded general safety profiles for structurally related compounds when used within permitted applications. However, specific approvals or E-number designations for diethylaminoethyl cellulose as a food additive in the EU have not been established, and the compound is not assigned a unique E-number in common additive lists. International bodies such as JECFA maintain databases of food additives and contaminants, but diethylaminoethyl cellulose does not appear as a distinct entity with defined acceptable daily intake (ADI) values in those compilations, reflecting its limited application context. Worldwide, regulators differentiate between direct food additives and processing aids; compounds like diethylaminoethyl cellulose that function in processing support roles are typically evaluated for safety based on their use conditions, potential residues, and lack of bioavailability. Such determinations emphasize that the compound’s presence in the final food is incidental and that any residual levels fall within safety expectations established by regulatory frameworks.

Taste And Functional Properties

CELLULOSE, DIETHYLAMINOETHYL does not contribute a taste or flavor profile in the way traditional food ingredients do. As a high molecular weight, modified cellulose polymer, it is not intended to dissolve in aqueous beverages or food systems to impact sweetness, bitterness, umami, or other sensory qualities. Instead, its functional properties are rooted in its polymeric structure and surface chemistry. The presence of diethylaminoethyl groups along the cellulose backbone imparts cationic characteristics under appropriate conditions, which can interact with anionic species or charged molecules in solution or at interfaces. These interactions support its use in chromatographic separations or enzyme immobilization systems. From a physicochemical perspective, modified celluloses generally exhibit negligible solubility in water and other common food solvents due to their high molecular weight and degree of substitution. They are handled as particulates or gels in technical applications and do not readily break down into small molecules that could influence taste sensations. Their behavior in complex systems is governed by steric effects, surface charge density, and the physical disposition of substituted groups. For example, diethylaminoethyl cellulose resins may swell in certain aqueous environments, allowing interactions with targeted molecules, but they remain insoluble and largely excluded from absorption or direct contact with taste receptors. Because they are not absorbed and do not provide metabolic energy or nutrients, modified celluloses like diethylaminoethyl derivatives are classified functionally outside of gustatory impact. Their contributions focus on mechanical or interactive roles within systems, such as separating proteins or facilitating enzyme activity in manufacturing. Accordingly, they are not evaluated for organoleptic properties in regulatory assessments, and their sensory profile—if any—is typically described as neutral or negligible when assessed in isolation.

Acceptable Daily Intake Explained

Acceptable daily intake (ADI) is a regulatory concept used by food safety authorities to describe the amount of a substance that can be consumed daily over a lifetime without appreciable health risk. ADIs are expressed in milligrams of substance per kilogram of body weight per day and are derived from toxicological data that identifies doses without observed adverse effects. For many cellulose derivatives, including those related to diethylaminoethyl cellulose, regulatory panels have concluded that a numerical ADI is not specified due to the low toxicity, poor absorption, and lack of systemic effects observed in available studies. When an ADI is not specified, it reflects an assessment that typical exposures from approved uses do not pose safety concerns, provided regulatory use conditions are met. The ADI framework helps regulators standardize safety evaluations across diverse classes of substances, but it is most relevant for additives that remain in final food products at measurable levels. In the case of processing aids or materials that are largely removed or present only in trace amounts after manufacturing processes, the ADI concept may have limited direct application. Nevertheless, understanding ADI helps contextualize why regulators differentiate between direct food additives and processing aids: the potential for daily ingestion and systemic exposure drives the need for numerical thresholds in some cases but not others. In practical terms, for consumers and industry stakeholders, the notion of an ADI reassures that regulatory bodies have considered available toxicological evidence and established safety margins. When modified celluloses are used in ways that minimize residual presence in foods, regulators may determine that a numerical ADI is unnecessary because typical exposures are orders of magnitude below levels associated with any biological effect.

Comparison With Similar Additives

CELLULOSE, DIETHYLAMINOETHYL can be compared with other cellulose derivatives used in food-related contexts, such as microcrystalline cellulose and carboxymethyl cellulose. Microcrystalline cellulose and powdered cellulose are common modified celluloses used as bulking agents or stabilizers, with well-established safety profiles and broad regulatory acceptance in many regions. Unlike diethylaminoethyl cellulose, these derivatives are explicitly listed with E-numbers and numerical use conditions in some jurisdictions. Their functional roles differ: microcrystalline cellulose contributes to texture and structure in foods, while diethylaminoethyl cellulose primarily serves technical roles in processing. Carboxymethyl cellulose is another derivative that functions as a thickener and stabilizer in a variety of food products. It has widespread regulatory acceptance with detailed usage levels and safety evaluations, reflecting its common inclusion in consumer foods. In contrast, diethylaminoethyl cellulose’s specialized use as a fixing agent in enzyme immobilization situates it outside typical food additive categories. The differences in regulatory treatment between these substances underscore the importance of understanding functional roles and exposure potential when evaluating safety and allowable uses. Comparing these derivatives highlights how structural modifications to cellulose influence both function and regulatory context.

Common Food Applications Narrative

CELLULOSE, DIETHYLAMINOETHYL is generally not listed as a direct ingredient in consumer food products; rather, it may be employed in industrial processing contexts that indirectly support food manufacturing. One prominent example is its role in immobilized enzyme systems used to produce high fructose corn syrup. In these applications, the polymer acts as a fixed support for catalytic proteins, ensuring that enzymes operate efficiently over extended cycles of use without contaminating product streams. This immobilization technique assists manufacturers in transforming starch into sweeteners while maintaining consistent reaction conditions and lowering downstream purification burdens. In enzyme preparation systems that convert lactose, sucrose, or other substrates, cellulosic supports may be chosen for their mechanical properties and functional group availability, enabling reliable binding and reuse. Beyond corn syrup production, cellulose derivatives with diethylaminoethyl functionality could theoretically support other bioprocessing steps where charged interactions facilitate separation or stabilization. For example, large-scale purification of proteins, peptides, or nucleic acids in food ingredient manufacturing could leverage ion-exchange resins derived from cellulose. In such cases, the polymer does not become part of the final food product; it serves as a medium through which desirable components are isolated or concentrated. This processing aid approach aligns with regulatory categories that distinguish technical agents from direct food additives, emphasizing that the consumer does not typically encounter the polymer in the final packaged food they purchase. Although regulators may permit use of specific modified cellulose derivatives under defined conditions, manufacturers must document compliance with applicable food safety and quality standards. Labels on consumer food products usually do not reflect indirect processing aids that are removed prior to final formulation. Accordingly, CELLULOSE, DIETHYLAMINOETHYL’s relevance to typical food applications centers on its utility in supporting ingredient transformations and process efficiencies rather than as a constituent of finished foods consumed at the retail level.

Safety & Regulations

FDA

  • Approved: True
  • Regulation: 21 CFR 173.357

EFSA

  • Notes: Specific EFSA approval for diethylaminoethyl cellulose not identified in d sources

JECFA

  • Notes: No specific JECFA evaluation for this compound found in the JECFA database

Sources

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