LAUROYL DIETHANOLAMIDE

CAS: 120-40-1 WASHING OR SURFACE REMOVAL AGENT

Lauroyl diethanolamide is a fatty amide surfactant identified by CAS 120-40-1 that appears on the FDA food contact substance inventory.

What It Is

Lauroyl diethanolamide (CAS 120-40-1) is a long-chain fatty acid derivative characterized as a nonionic surfactant and surface-active agent. In chemical terms, it is an amide formed from lauric acid and diethanolamine, with a hydrophobic lauryl (C12) tail and a hydrophilic diethanolamine head. This amphiphilic configuration provides the molecule with the ability to reduce surface tension between different phases, thereby functioning as a washing or surface removal agent in formulations where surface activity is desired. Functionally, lauroyl diethanolamide appears on regulatory inventories such as the U.S. Food and Drug Administration's list of substances permitted for use in certain food contact applications, indicating its role as an indirect additive in materials that can touch food under specified conditions. Regulatory citations include 21 CFR 173.315, 176.180, and 178.3130, which are sections of the U.S. Code of Federal Regulations listing authorized uses of various indirect additives. Its presence on these inventories reflects recognition by regulators that, under defined use conditions, the compound can serve technical functions without posing undue risk, based on chemical identity and intended application context. The structure and naming conventions include multiple synonyms reflecting industrial and scientific usage, such as lauryl diethanolamide and N,N-bis(2-hydroxyethyl)dodecanamide, and these names help professionals identify the same chemical across technical documents and regulatory listings. Overall, lauroyl diethanolamide is primarily a technical surfactant with specific permitted uses in contact with food-related materials rather than a direct food ingredient itself, and its classification and regulatory listing help ensure that its use is consistent with safety and quality expectations for food contact applications.

How It Is Made

Lauroyl diethanolamide is manufactured through a chemical reaction between lauric acid derivatives (such as methyl laurate) and diethanolamine under controlled conditions. In industrial synthesis, the fatty acid (or ester) and the amine are combined with a catalyst, typically under elevated temperature, to promote amide bond formation. The result is a compound that integrates the hydrophobic fatty chain with the hydrophilic diethanolamine moiety, yielding a nonionic surfactant with surface-active properties. After synthesis, the product is typically purified to remove unreacted starting materials and byproducts, often through distillation, filtration, or washing steps, producing a technical-grade or refined surfactant suitable for use in formulations. This manufacturing approach is common among fatty acid amides and parallels basic amide formation reactions used broadly in chemical industry settings. The process emphasizes reaction conditions and purification to achieve performance characteristics required for its intended use, for example in materials that contact food. While specific industrial practices may vary and proprietary catalysts or conditions may be employed, the underlying chemistry draws on well-established organic synthesis principles. Quality control and analytical testing, such as chromatography or spectroscopy, help ensure that the final product meets specifications for identity and purity relevant to its technical function.

Why It Is Used In Food

Lauroyl diethanolamide is used in food-related applications primarily for its surfactant and surface-active properties in materials that contact food, rather than as a direct ingredient in food itself. In the context of food packaging and food contact surfaces, surfactants like lauroyl diethanolamide can help improve processes such as coating, cleaning, and release properties by reducing surface tension and aiding uniform distribution of formulations. Its inclusion in regulatory inventories for indirect food additives reflects a technical function where the compound is part of polymers, films, or coatings that may contact food; these functions can facilitate manufacturing efficiency and performance in food packaging materials. Because the compound is effective at modifying surface interactions, formulators may use it to enhance wettability or reduce defects in coatings designed for food contact. Surfactants also can help with dispersion of additives within a polymer matrix, contributing to consistent performance of food contact articles. The regulatory framework for such substances focuses on ensuring that any migration into food from contact surfaces remains within safe limits, based on chemical identity and anticipated conditions of use. This role differs from direct food additives, which are incorporated into foods to provide sensory or preservative functions; instead, lauroyl diethanolamide supports the functional integrity of materials that indirectly touch food.

Adi Example Calculation

Because no numerical Acceptable Daily Intake (ADI) has been established for lauroyl diethanolamide in the context of direct food additive use, an illustrative calculation using specific mg/kg body weight values cannot be provided here. In typical ADI calculations for direct additives, a hypothetical ADI might be expressed in mg per kg of body weight per day, and an example for a given body weight would multiply that value by body weight to estimate a daily intake threshold. However, since lauroyl diethanolamide is regulated as an indirect food contact substance with specific use conditions rather than through an established ADI, such illustrative numeric calculations do not apply directly. Instead, compliance with regulatory conditions governing migration from contact materials into food under intended use scenarios helps ensure that any exposure remains within safe bounds.

Safety And Health Research

Safety evaluation of lauroyl diethanolamide in the context of food contact materials centers on its chemical identity and potential for migration into food under anticipated conditions of use, rather than direct ingestion in significant amounts. Regulatory inventories that list this compound for food contact applications reflect assessments that its presence in materials formulated and used according to specified conditions does not pose undue risk, based on available data and historical use. Toxicological evaluations of similar surfactants consider endpoints such as irritation, sensitization, and systemic toxicity, and regulators set conditions to minimize exposure to levels considered safe. Because lauroyl diethanolamide is not a direct food ingredient but resides in polymers or coatings, safety research focuses on understanding potential migration and ensuring that any exposure through contact remains within limits established by risk assessment principles. Materials intended for repeated food contact may be subject to migration testing and compliance with overall and specific migration limits, where applicable. Comprehensive toxicological studies on the compound itself in food contexts may not be publicly available, and numerical health-based guidance values for systemic exposure through diet are not established here. Risk assessment in this context emphasizes adherence to regulatory use conditions and monitoring of migration rather than direct dietary intake assumptions.

Regulatory Status Worldwide

In the United States, lauroyl diethanolamide appears on the Food and Drug Administration's inventory of substances permitted for use in food contact applications, with references to 21 CFR sections such as 173.315, 176.180, and 178.3130 that list authorized indirect food additives and their conditions of use. The presence of these citations indicates that the compound has been identified as an allowable component in materials that may contact food under specific conditions, as detailed in federal regulations. However, specific use conditions and limitations are spelled out in those CFR sections, and compliance with those conditions is required for lawful use. There is no evidence from the d inventory that lauroyl diethanolamide carries an E-number in the European Union, and its evaluation by the Joint FAO/WHO Expert Committee on Food Additives (JECFA) is not directly documented in publicly accessible JECFA additive listings, so numeric Acceptable Daily Intake (ADI) values or INS numbers are not available here. Because it is used as an indirect additive rather than a direct food additive, regulatory frameworks emphasize migration limits and material performance rather than consumption-based ADI values. Worldwide regulatory treatment varies, and formulators must consult local food contact regulations to ensure compliance with conditions of use relevant to each market.

Taste And Functional Properties

Lauroyl diethanolamide is not typically evaluated for taste in the context of foods, because its primary applications relate to surface activity and material formulation rather than direct consumption. Functionally, as a nonionic surfactant, it demonstrates properties common to amphiphilic molecules: it lowers surface tension, aids in wetting and spreading of liquid formulations, and can stabilize interfaces between dissimilar phases. Its chemical structure—with a hydrophobic fatty tail and a hydrophilic diethanolamide head—enables the molecule to orient at surfaces and interfaces, promoting emulsification and dispersion when used in appropriate technical applications. These functional traits are valuable in formulation science, particularly for plastics and coatings for food contact materials, where consistent surface interaction can influence performance. In technical use, the behavior of such a surfactant under different pH, temperature, or solvent conditions is an important consideration for formulators, as these factors can alter its effectiveness. Because it is not consumed as a direct food ingredient, sensory qualities like taste or aroma are generally not part of its functional evaluation for food contact applications; instead, emphasis is placed on stability and compatibility with material substrates.

Acceptable Daily Intake Explained

Acceptable Daily Intake (ADI) is a concept used by food safety authorities to express the amount of a substance that can be ingested daily over a lifetime without appreciable health risk, based on toxicological data and safety factors. For compounds used as direct food additives, an ADI is often established after careful evaluation by expert bodies such as the Joint FAO/WHO Expert Committee on Food Additives (JECFA) or the European Food Safety Authority (EFSA). In the case of lauroyl diethanolamide, because it is primarily regulated as an indirect food contact substance rather than a direct food additive, numeric ADI values are not publicly established in the major additive evaluations accessible here, and the focus instead is on controlling migration from contact materials to food. In general, when ADIs are assigned for direct food additives, regulators use available toxicity data to identify a no-observed-adverse-effect level (NOAEL) in animal studies and apply safety factors to derive a conservative exposure limit for humans. These principles help ensure that even low-level exposure through diet is unlikely to pose health concerns over a lifetime. However, for indirect additives, regulatory frameworks emphasize compliance with use conditions and migration limits to manage exposure rather than calculating an ADI in the traditional sense used for direct additives.

Comparison With Similar Additives

Lauroyl diethanolamide can be compared with other surfactant-type additives and indirect food contact substances that serve surface-active or processing roles. For example, glycerol monostearate is a surface-active agent used in foods and materials to improve texture or dispersion performance; however, glycerol monostearate is a direct food additive with its own numerical ADI and E-number, whereas lauroyl diethanolamide is used indirectly in food contact materials without a direct E-number. Another comparable class includes polyethylene glycol esters used to modify surface properties in food packaging; these too are regulated with specific conditions of use defining allowable migration, and often have published numerical guidance where direct ingestion may occur. Compared with these, lauroyl diethanolamide’s role as a surfactant in material formulations aligns with broader regulatory strategies that manage exposure through migration limits rather than direct food additive authorizations. These distinctions highlight how different additive types—direct versus indirect—are treated in regulatory frameworks based on use patterns and exposure pathways.

Common Food Applications Narrative

Although lauroyl diethanolamide is not a direct food ingredient, it plays a supporting role in the broader context of products that come into contact with food or are used around food environments. In modern manufacturing of food packaging materials such as plastic films, trays, and coatings, surfactants like lauroyl diethanolamide can be incorporated into polymer additives to enhance processing and performance. For example, when producing flexible films that wrap fresh produce or packaged goods, surface-active agents help ensure that the polymer melts and coatings spread evenly, reducing defects and improving appearance. Similarly, in rigid containers and closures, lauroyl diethanolamide may be part of additive packages that contribute to slip performance, antistatic behavior, or release properties, which in turn support efficient production and handling. Because these applications are indirect—meaning the additive resides in the material rather than in the food itself—regulatory listings specify conditions of use to manage any potential migration into food. In food service equipment or processing environments, surfactants with similar properties can also be components of cleaning formulations used to remove residues from equipment surfaces, again aiding hygiene without being consumed directly. These uses connect to consumer search intents about food contact safety and materials performance, emphasizing that lauroyl diethanolamide supports technical functions in products associated with food rather than providing sensory or nutritional roles.

Safety & Regulations

FDA

  • Notes: Listed in FDA food contact substance inventory with specific CFR citations but specific conditions of use and individual approval status not clarified.

EFSA

  • Notes: No direct EFSA additive evaluation with numeric ADI identified.

JECFA

  • Notes: No JECFA numeric ADI identified in accessible additive listings.

Sources

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