DIETHYLAMINOETHANOL

CAS: 100-37-8 BOILER WATER ADDITIVE

DIETHYLAMINOETHANOL (CAS 100-37-8) is an amino alcohol primarily used industrially as a boiler water additive functioning to inhibit corrosion in steam systems that contact food.

What It Is

DIETHYLAMINOETHANOL is a small organic amino alcohol with the chemical structure of a diethyl-substituted amino group attached to ethanol. It is a colorless, hygroscopic liquid with a characteristic amine-like odor that is miscible in water and many organic solvents. Structurally it belongs to the class of ethanolamines, which are compounds containing both amine and alcohol functional groups. In industrial use, DIETHYLAMINOETHANOL is employed as a boiler water additive, where its basicity and chemical reactivity help moderate the pH of boiler systems and reduce the corrosive action of dissolved carbon dioxide and other acidic species. It is identified by CAS Number 100-37-8 and is known by several synonyms including 2-(Diethylamino)ethanol and N,N-Diethylethanolamine. While it has applications in laboratory synthesis and as an intermediate in chemical manufacturing, its designation as a boiler water additive reflects a specific technical use supporting steam generation processes that contact food products under controlled regulatory conditions. The compound’s physical properties, such as water miscibility and alkalinity, underpin its functional role in neutralizing corrosive agents in aqueous industrial systems and helping maintain stable operational conditions in steam boilers and humidification applications. Chemical inventories and regulatory references list DIETHYLAMINOETHANOL in categories relevant to indirect food contact, emphasizing its technical function rather than as a conventional food ingredient. The understanding of DIETHYLAMINOETHANOL as a boiler water additive frames its role within food processing environments and underscores the need for regulatory compliance and safety evaluation in its use.

How It Is Made

DIETHYLAMINOETHANOL is typically synthesized through established industrial chemical reactions involving the reaction of diethylamine with ethylene oxide under controlled conditions. In this process, ethylene oxide is added to diethylamine at a regulated temperature, leading to the formation of the amino alcohol through nucleophilic attack of the amine on the epoxide ring. The crude product is then purified by techniques such as fractional distillation under reduced pressure to obtain a high-purity DIETHYLAMINOETHANOL suitable for industrial applications. The synthesis pathway reflects common routes for producing alkanolamines, where the balance of reactivity and operational control helps achieve consistent product quality. In a manufacturing setting, careful monitoring of reaction parameters, temperature control, and purification stages ensure that the final product meets the technical specifications required for use as an additive in boiler water treatment and related applications. Quality assurance for industrial chemicals such as DIETHYLAMINOETHANOL involves analytical verification of composition, identification of potential impurities, and adherence to safety handling protocols. The production methods are documented in chemical reference sources and industrial synthesis texts that provide generalized information about typical procedures, without revealing proprietary process details. Because DIETHYLAMINOETHANOL is hygroscopic and reactive with acidic contaminants, production facilities also incorporate measures to control moisture exposure and maintain the chemical’s stability during storage and transportation. These manufacturing practices reflect standard chemical industry approaches to producing amino alcohol intermediates, ensuring that DIETHYLAMINOETHANOL performs reliably in its designated technical roles.

Why It Is Used In Food

The use of DIETHYLAMINOETHANOL in food-related settings is indirect and tied to its role as a boiler water additive rather than as a direct food ingredient. When steam is generated for use in food processing, cleaning, or contact with food surfaces, controlling the quality and chemical composition of the boiler water is essential to prevent corrosion, scaling, and contamination of the steam. DIETHYLAMINOETHANOL functions in boiler water systems by neutralizing acidic components, such as carbonic acid formed from dissolved carbon dioxide, thereby reducing corrosive processes within the boiler and steam distribution network. In regulated food processing environments, such control supports operational integrity and helps ensure that the steam used does not introduce unwanted chemical byproducts into food contact surfaces. Regulatory frameworks that govern indirect food additives recognize the technical necessity of compounds like DIETHYLAMINOETHANOL when used under specified conditions that limit potential residues in food products. Its inclusion in regulatory listings under boiler water additives reflects the understanding that properly controlled use enhances equipment longevity and supports hygienic processing conditions without compromising food safety when used as intended. While not a food constituent itself, DIETHYLAMINOETHANOL enables food manufacturers to maintain steam quality and operational performance, which are critical for processes such as blanching, sterilization, and humidification in food production facilities. The emphasis in food regulation is on safe use, limiting exposure, and ensuring that functional additives like DIETHYLAMINOETHANOL serve their intended purpose without introducing risk to consumers or compromising product integrity.

Adi Example Calculation

Because DIETHYLAMINOETHANOL does not have an established acceptable daily intake (ADI) value set by international regulatory bodies, it is not appropriate to provide a numerical example calculation of intake. ADIs are typically derived when a substance is intentionally added to food and there is sufficient toxicological data to support estimating lifetime exposure thresholds. In the case of DIETHYLAMINOETHANOL, its regulated use as an indirect boiler water additive under conditions that limit contact with food eliminates the basis for calculating a consumer’s daily intake. Regulatory conditions emphasize controlled application and minimal potential for residues, and therefore there is no ADI framework to apply. Users of DIETHYLAMINOETHANOL in industrial food processing roles rely on compliance with food contact regulations rather than intake calculations to ensure safety.

Safety And Health Research

Safety assessments of DIETHYLAMINOETHANOL have largely focused on its chemical hazards in industrial settings rather than on direct human dietary exposure. Toxicological information indicates that the compound can be irritating to skin, eyes, and respiratory tissues at sufficient exposure levels, and industrial safety data classify it with hazard warnings typical for corrosive and flammable chemicals. These classifications derive from studies and safety evaluations that inform occupational exposure limits and handling precautions in workplace environments. There is limited evidence from authoritative food safety bodies regarding long-term dietary or human health risks associated with DIETHYLAMINOETHANOL because its intended use in food processing is as an indirect additive in boiler water systems under controlled regulatory conditions. Research and safety evaluations in occupational and industrial chemical databases provide guidance on hazard identification and control measures to protect workers from acute exposures, including measures such as ventilation, personal protective equipment, and exposure monitoring. Although global expert committees such as the Joint FAO/WHO Expert Committee on Food Additives (JECFA) maintain comprehensive food additive evaluation programs, publicly accessible records do not provide specific ADI values or detailed intake assessments for DIETHYLAMINOETHANOL, reflecting its limited role in direct food contact. In the absence of specific dietary intake data, regulatory authorities emphasize adherence to usage conditions defined in food contact regulations and industrial safety standards to minimize potential exposure risks. This approach aligns with general risk management practices for indirect food additives, where the primary objective is to control exposure through process conditions rather than through dietary consumption, and where occupational health research informs safe handling and environmental controls in industrial contexts.

Regulatory Status Worldwide

The regulatory status of DIETHYLAMINOETHANOL in the context of food processing is centered on its permitted use as a boiler water additive under specific conditions. In the United States, the Food and Drug Administration (FDA) includes boiler water additives in Title 21 of the Code of Federal Regulations at Section 173.310, which outlines the conditions under which boiler water additives may be safely used in the preparation of steam that will contact food. This regulatory provision allows compounds like DIETHYLAMINOETHANOL to be used in boiler systems provided that the amount of additive does not exceed what is necessary for its functional purpose and that steam contact with food is consistent with the intended technical effect. Such regulations emphasize controlled use to prevent excessive chemical residues in steam and downstream contact with food products. It is important to recognize that DIETHYLAMINOETHANOL’s approval status is specific to indirect food contact through steam generation and not as a direct food ingredient. Similar regulatory frameworks exist internationally, often with analogous provisions that govern indirect food additives used in process water and steam systems, and these frameworks focus on restricting use to necessary functional applications while limiting potential food exposure. Regulatory bodies worldwide may also classify DIETHYLAMINOETHANOL under industrial chemical inventories and safety guidelines separate from food contact specifications, reflecting its broader use beyond food processing. The regulatory landscape underscores the importance of adhering to defined conditions of use for boiler water additives, ensuring that DIETHYLAMINOETHANOL and similar chemicals fulfill their technical roles without compromising food safety or violating local and international food contact regulations.

Taste And Functional Properties

DIETHYLAMINOETHANOL does not contribute a sensory taste profile to food products because it is not used directly as a flavoring or food component. Its functional properties are technical and pertain to its behavior in aqueous systems, particularly in boiler water management. The compound's amino and alcohol groups give it basic properties and enable it to interact with acidic species in solution, increasing alkalinity and contributing to pH stabilization. In boiler systems that generate steam for food contact applications, maintaining a controlled pH is important to avoid corrosion and subsequent contamination of equipment and surfaces. The solubility of DIETHYLAMINOETHANOL in water and its reactivity with carbon dioxide and other acidic corrosion agents make it effective for this stabilizing function. From a sensory perspective, DIETHYLAMINOETHANOL itself has an amine-like odor detectable at relatively low concentrations in industrial contexts, but such odor is not relevant to food sensory quality when the compound is properly controlled in steam generation settings. The compound’s functional performance is influenced by temperature, pH, and the chemical composition of the boiler water, with effective use requiring calibration of concentration and monitoring of boiler conditions. DIETHYLAMINOETHANOL does not impart a taste to food because it is not intended to remain in food, and regulatory practices surrounding indirect additives emphasize that any residual presence is minimized through controlled application and compliance with food contact conditions. Understanding the technical functional properties of DIETHYLAMINOETHANOL helps stakeholders in food processing and safety engineering to manage boiler systems effectively without compromising product quality.

Acceptable Daily Intake Explained

Acceptable daily intake (ADI) is a concept used by food safety authorities to estimate the amount of a substance that can be consumed every day over a lifetime without appreciable risk. For many food additives, ADIs are established based on toxicological data and risk assessments that define exposure thresholds. In the case of DIETHYLAMINOETHANOL, there is no widely recognized ADI established by international expert committees such as JECFA, as its primary function in food processing is as an indirect additive for boiler water treatment rather than as a direct food ingredient. When a substance does not have an established ADI, regulatory frameworks typically treat it according to indirect food contact provisions that restrict use to functional applications and limit potential residues in food. The absence of an ADI for DIETHYLAMINOETHANOL does not imply that it is unsafe, but rather reflects the nature of its authorized use and the lack of data requiring a formal intake threshold. In regulatory practice, indirect additives are managed by specifying conditions of use that prevent significant migration or exposure, ensuring that any incidental contact with food is negligible. Consumers concerned about food safety can refer to regulatory provisions that define acceptable use conditions and indirect additive categories, recognizing that ADIs are most relevant for substances intentionally added to food. For indirect additives like DIETHYLAMINOETHANOL, adherence to regulated usage conditions minimizes the need for numerical intake recommendations and focuses on controlling exposure through process parameters and quality assurance measures.

Comparison With Similar Additives

DIETHYLAMINOETHANOL can be compared with other boiler water additives and amino alcohols used for similar technical purposes. Compounds such as morpholine and cyclohexylamine are also used in boiler water treatment to control pH and reduce corrosion by establishing an alkaline environment in steam systems. Each of these additives has distinct chemical properties that influence their volatility, solubility, and behavior in aqueous systems, leading to differences in application protocols and monitoring requirements. Amino alcohols such as monoethanolamine and diethanolamine, while structurally related to DIETHYLAMINOETHANOL, are more commonly encountered in industrial resin synthesis and surfactant production rather than as boiler water additives. The choice among these chemicals for specific boiler systems depends on factors such as system design, temperature, expected feedwater contaminants, and regulatory acceptance for indirect food contact. The comparison highlights the technical role of DIETHYLAMINOETHANOL within a broader class of functional additives that support corrosion control and pH management in steam generation systems. Regulatory contexts also differ among these additives, with specific provisions governing their use in food processing environments. Understanding the similarities and differences among boiler water additives assists engineers and safety professionals in selecting appropriate treatment chemistries that align with operational goals and regulatory compliance.

Common Food Applications Narrative

In food processing environments where steam is essential for operations such as blanching, sterilization, pasteurization, and surface cleaning, the quality of the steam and the integrity of the boiler systems are critical. DIETHYLAMINOETHANOL plays a supporting role in these environments by contributing to the chemical control of boiler water, helping to moderate pH levels and limit corrosive processes that can affect equipment. The generation of clean, high-quality steam that contacts food products requires careful management of boiler chemistry to prevent corrosion, scaling, and potential contamination. Boiler water additives such as DIETHYLAMINOETHANOL are used by engineers and plant technicians to maintain proper alkalinity in boiler feedwater, thereby protecting boiler tubes, condensate lines, and steam distribution networks from chemical degradation. This indirect contribution supports a range of food processing applications that depend on steam, whether in vegetable blanching to inactivate enzymes, heating processes in canneries, or humidification systems in bakery operations. Because steam that contacts food surfaces must be free from harmful contaminants, the use of technical additives is governed by regulatory frameworks that specify acceptable conditions and limits for such applications. DIETHYLAMINOETHANOL’s role is not in the formulation of food products, but rather in ensuring that the industrial infrastructure supporting food production operates reliably. Its application in boiler water treatment therefore contributes to the broader food processing ecosystem by enabling consistent steam generation, reducing maintenance issues related to corrosion, and helping facilities meet hygienic standards required for food safety and quality. In practice, proper dosing, monitoring, and system maintenance are essential to ensure that boiler water additives like DIETHYLAMINOETHANOL perform their technical function without introducing unintentional effects on steam quality or downstream processes. As part of a comprehensive boiler water treatment program, DIETHYLAMINOETHANOL helps support food manufacturers in achieving operational goals that align with safety and regulatory expectations.

Safety & Regulations

FDA

  • Approved: True
  • Regulation: 21 CFR 173.310

EFSA

  • Notes: EFSA has no specific additive evaluation available

JECFA

  • Notes: No specific JECFA evaluation for DIETHYLAMINOETHANOL identified

Sources

Comments

No comments yet. Be the first to share!