AMMONIA (ALSO INCLUDES AMMONIUM CHLORIDE)

CAS: 977188-02-5 FLAVORING AGENT OR ADJUVANT

AMMONIA (ALSO INCLUDES AMMONIUM CHLORIDE) is listed in the U.S. FDA Substances Added to Food inventory as a flavoring agent or adjuvant with CAS 977188-02-5 but specific CFR authorization for this mixture is not identified in the primary regulatory inventory, and limited safety evaluations by EFSA and JECFA cover constituent ammonia and ammonium chloride under general flavouring assessments.

What It Is

AMMONIA (ALSO INCLUDES AMMONIUM CHLORIDE) refers to a defined flavoring ingredient entry used in food flavouring applications. The designation encompasses a mixture of gaseous ammonia and its salt, ammonium chloride, recognized by the U.S. Food and Drug Administration’s Substances Added to Food inventory for its technical effect as a flavoring agent or adjuvant. The CAS registry number 977188-02-5 identifies this specific mixture entry used in regulatory listings rather than pure individual components. In flavour chemistry, both ammonia and ammonium chloride have been used as compounds that can impart characteristic sensory properties, particularly in savory and processed foods, and have been evaluated within regulatory frameworks for safe use in food products. The term "flavoring agent or adjuvant" indicates that this ingredient functions to provide or modify taste or aroma in a food product formulation. Regulatory listings for flavouring agents like this often rely on evaluations conducted by expert bodies and inclusion in inventory systems rather than specific numeric intake limits defined in food additive regulations.

How It Is Made

As an ingredient entry for AMMONIA (ALSO INCLUDES AMMONIUM CHLORIDE), the production involves combining ammonia and ammonium chloride under controlled conditions to yield a mixture suitable for use as a flavouring agent. Ammonia itself is a simple nitrogenous compound commonly produced via industrial synthesis such as the Haber-Bosch process, where nitrogen and hydrogen react under high temperature and pressure. Ammonium chloride is typically synthesized by reacting ammonia with hydrogen chloride in aqueous solution, resulting in a crystalline salt that can be separated and purified. In the context of food ingredient preparation these chemical inputs are processed to achieve a defined specification that meets food-grade criteria, including limits on impurities and contaminants. National and international food safety standards and good manufacturing practices guide the purity and quality attributes, ensuring that the final mixture is consistent with its intended use. Because the CAS number 977188-02-5 refers to the mixture itself rather than the individual ammonia or ammonium chloride substances, a specific combined manufacturing specification for this entry is not widely published. However, food grade ammonium chloride is typically produced by controlled neutralization and crystallization steps to ensure the chemical meets food additive minimal purity standards.

Why It Is Used In Food

This ingredient entry is listed for use as a flavoring agent or adjuvant because the constituent chemical characteristics of ammonia and ammonium chloride can contribute to taste profiles or support other flavouring effects in a formulation. These compounds may be employed to enhance or modify the sensory experience of savory and processed foods, where controlled addition can influence saltiness, pungency, or other taste attributes. In food science, flavoring agents are selected on the basis of their ability to interact with the food matrix to achieve desired organoleptic properties including aroma complexity and taste balance. Ammonium chloride specifically has a history as a food additive in some countries for its salty and slightly bitter taste, often used in specialized confectionery and traditional applications. The mixture with ammonia may be provided in certain flavouring formulations to achieve specific manufacturing or sensory objectives where the combined functional attributes are desirable. Manufacturers use such agents in small amounts to intensify flavour without significantly altering nutritional composition.

Adi Example Calculation

To illustrate the ADI concept in a hypothetical manner, imagine an expert committee establishes an ADI for a flavouring compound at a figure representing the highest level of daily intake unlikely to pose appreciable health risk. For a person weighing 70 kilograms (about 154 pounds), if that ADI were hypothetically 5 milligrams per kilogram body weight per day (as an example), the total allowable intake would be 350 milligrams per day. In the context of flavouring substances used at parts per million levels in food products, actual exposures would typically be orders of magnitude below such a value, reflecting conservative safety margins. This hypothetical example demonstrates how ADI values provide a benchmark for regulatory and industry use, but it does not imply that a specific ADI has been established for this ingredient entry by a regulatory body. Instead it highlights how numeric ADI concepts help frame safety assessments and guide responsible formulation practices.

Safety And Health Research

Regulatory safety assessments for flavouring substances that include ammonia and ammonium chloride are conducted by expert bodies such as EFSA and JECFA. For instance, EFSA’s Flavouring Group Evaluation 46 considers ammonia and ammonium chloride among structurally related flavouring agents, analysing toxicological data, metabolic fate, and exposure estimates to determine whether their use at intended levels raises safety concerns. These evaluations take into account structure based prediction, available genotoxicity information, and traditional toxicology studies for compounds within the group. The outcomes generally indicate that at typical use levels in flavouring applications estimates of intake are substantially lower than thresholds of toxicological concern for similar structural classes, though more precise data on use levels may be requested to refine assessments. JECFA and Codex databases compile evaluations and specifications for food additives and flavourings, providing expert summary information on identity, chemistry, and safety evaluations that inform risk assessments and international standards. Overall, such expert-led evaluations focus on hazard identification, metabolism, and exposure considerations rather than assigning specific health effects at consumer exposure levels, ensuring that use in foods adheres to safety principles.

Regulatory Status Worldwide

In the United States, AMMONIA (ALSO INCLUDES AMMONIUM CHLORIDE) appears in the Food and Drug Administration’s Substances Added to Food inventory, indicating that it is recognized as a food ingredient with a specified technical effect as a flavouring agent or adjuvant. The FDA inventory is a listing maintained by the Office of Food Additive Safety that includes food additives, flavoring substances evaluated by expert panels, and other ingredients used in foods, but inclusion in this inventory does not alone represent a specific affirmative regulation like a CFR section authorizing exact use conditions. The individual component ammonium chloride is listed in 21 CFR 184.1138 as a direct food substance affirmed as generally recognized as safe for use in foods under conditions of good manufacturing practice, reflecting FDA’s review of its safety and specifications for use as an ingredient. In the European Union, ammonia and ammonium salts including ammonium chloride have been subjects of EFSA’s flavouring group evaluations, where their safety as flavouring substances has been considered within grouped assessments. These evaluations review structure, metabolism, and estimated intake, but they do not by themselves establish explicit E-number approvals without additional regulatory steps. Internationally, the Codex Alimentarius and FAO/WHO Joint Expert Committee on Food Additives provide authoritative evaluations and specifications for flavouring substances and food additives, and they maintain searchable databases where ammonia-derived flavouring substances can be found among evaluated compounds.

Taste And Functional Properties

The functional properties of ammonia and ammonium chloride relate to how these compounds contribute to taste and chemical behaviour in food systems. Ammonia is a volatile compound with a pungent and sharp sensory profile at higher concentrations, while at low use levels in flavouring formulations it can contribute to complex aroma interactions. Ammonium chloride, on the other hand, has a mildly saline and slightly bitter taste which can be used to balance other flavour notes. Because ammonium chloride is highly soluble in water, it distributes evenly in aqueous food matrices and can influence both taste perception and pH. The heat stability of ammonium chloride allows it to be incorporated into cooked and processed foods without significant breakdown of the compound under typical food processing conditions. In flavouring applications, the combined presence of ammonia and ammonium chloride can support nuanced taste profiles where controlled release of nitrogenous species and ionic strength adjustments play a role. Sensory professionals often consider these properties when designing flavour blends that deliver specific consumer experiences, understanding that such agents should be used within regulatory limits and good manufacturing practice to ensure consistency and safety.

Acceptable Daily Intake Explained

An acceptable daily intake (ADI) is a scientific metric used in food safety to estimate the amount of a substance that can be consumed daily over a lifetime without appreciable health risk. For flavouring agents and similar additives, expert bodies such as JECFA and EFSA review available toxicological and metabolic data to determine whether a numerical ADI can be assigned or whether the compound can be evaluated under a threshold of toxicological concern framework where no specific ADI is needed due to low exposure and minimal hazard at intended use levels. In the case of ammonia and ammonium chloride as flavouring agents, international evaluations consider their metabolic pathways—ammonia being metabolised endogenously to urea and ammonium chloride dissociating into ions handled by normal physiological processes—and typical intake estimates that remain far below levels of toxicological concern. Because these compounds are evaluated in group contexts where structural and metabolic characteristics are considered, a specific numeric ADI may not be established unless sufficient data warrant it. The ADI concept helps regulatory agencies set guidelines for safe use levels and advise food manufacturers on conditions of use that remain within well‑characterised safety margins.

Comparison With Similar Additives

Compared with other flavouring agents, AMMONIA (ALSO INCLUDES AMMONIUM CHLORIDE) occupies a more specialized niche. Common flavouring agents such as monosodium glutamate provide umami taste in savory foods, while esters and aldehydes deliver fruity or aromatic profiles in sweet and beverage applications. Compounds such as ammonium chloride impart a saline and slightly bitter note useful in particular cultural and traditional foods like salty licquorice, whereas ammonia‑based flavouring may also influence aroma perception at low levels. In contrast, typical flavour enhancers like nucleotides and other amino acid derivatives act through well‑characterized sensory pathways to intensify taste. The mixture designation used here represents a unique functional category anchored more in technical flavour modulation than broad use across diverse food types, and its regulatory and safety assessment contexts often group it with structurally related nitrogenous flavourings rather than mainstream additives.

Common Food Applications Narrative

AMMONIA (ALSO INCLUDES AMMONIUM CHLORIDE) finds its technical utility primarily in flavouring contexts where subtle taste modulation is desired. Within the broad landscape of food product development, flavouring agents play a critical role in delivering consistent sensory appeal across categories ranging from savory snacks to processed entrees. For example, in some traditional confectioneries the salt-like taste contributed by ammonium chloride supports unique cultural taste profiles. More generally, flavoring agents that include ammonia derivatives are incorporated in minute quantities into complex flavour blends for snack seasonings, sauces, and savoury spreads to enhance depth and balance of taste. Their use aligns with the broader practice of employing nitrogenous compounds as part of flavour design strategies, especially in products where mild umami-like and savoury enhancement is targeted. However, because this ingredient entry represents a specific mixture rather than a broad class of components, it is primarily relevant in specialized flavour systems formulated by ingredient technologists rather than as a ubiquitous additive in mainstream food categories. Across these applications, technical specifications, safety evaluations, and adherence to good manufacturing practices ensure that the ingredient fulfills its intended functional role without compromising product quality.

Safety & Regulations

FDA

  • Notes: Inclusion in the FDA Substances Added to Food inventory does not alone confer a specific CFR food additive regulation; specific allowed uses require further regulatory details.

EFSA

  • Notes: EFSA has evaluated ammonia and ammonium chloride in grouped flavouring evaluations but no explicit EU approval with E number was confirmed.

JECFA

  • Notes: JECFA evaluates flavouring substances including ammonia and ammonium chloride structurally but no specific numeric ADI or INS number for the mixture entry was found.

Sources

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