CETYL ALCOHOL
Cetyl Alcohol (CAS 36653-82-4) is a long-chain fatty alcohol used across cosmetics, pharmaceuticals, and flavoring contexts with multiple synonyms.
What It Is
Cetyl Alcohol is a chemical compound categorized as a long-chain fatty alcohol with the molecular formula C16H34O. It is identified by the CAS registry number 36653-82-4, which confirms its unique identity in chemical and regulatory contexts. This compound appears as a waxy solid or flakes at room temperature and has a faint or mild odor. As noted by chemical databases, Cetyl Alcohol is also known under a variety of synonyms, including hexadecan-1-ol and palmityl alcohol, reflecting its place in the broader class of fatty alcohols. It is classified technically as a flavoring agent or adjuvant according to the provided functional designation. In regulatory inventories such as the FDA’s Substances Added to Food list, Cetyl Alcohol can be indexed as a flavoring substance evaluated by FEMA and JECFA, though that listing does not, by itself, constitute formal FDA approval for any specific use in foods. The structural features of this molecule derive from a straight chain of 16 carbon atoms terminating in a hydroxyl group, making it one of the higher molecular weight alcohols commonly encountered in industrial, cosmetic, and flavoring applications. The compound’s waxy physical state, coupled with its solubility profile — insoluble in water but soluble in organic solvents — aligns with its practical uses in formulations where dispersion or emulsion behavior is critical to performance.
How It Is Made
The production of Cetyl Alcohol can occur by several pathways associated with fatty alcohol manufacture. Traditional methods for fatty alcohol production involve catalytic hydrogenation of fatty acid methyl esters or fats derived from natural oils, such as palm oil or coconut oil; hydrogenation cleaves and reduces the ester groups to yield the corresponding alcohol. Alternatively, it can be derived from natural wax sources historically obtained from animal or plant waxes. Industrial synthesis typically uses well-controlled hydrogenation processes to achieve a high degree of purity appropriate for use in cosmetics, pharmaceutical excipients, and other applications. This process is conducted under conditions of elevated temperature and pressure with specific catalysts to enable an efficient conversion of precursor compounds to the long-chain alcohol. After synthesis, the material is often purified through distillation or crystallization to achieve grades that meet regulatory or compendial standards such as those defined by pharmacopeias. Although Cetyl Alcohol itself is listed in chemical inventories and industry product catalogs, its designation in food-related regulatory contexts requires careful interpretation of listed regulations and evaluations by expert panels such as FEMA or JECFA rather than being directly described in a single easily accessible consolidated specification document.
Why It Is Used In Food
Cetyl Alcohol’s inclusion as a flavoring agent or adjuvant arises from its chemical properties as a long-chain fatty alcohol. In food and beverage formulations where it is used, the compound may contribute to the physical behavior of other ingredients, such as improving texture, stabilizing emulsions, or assisting the dispersion of hydrophobic flavor components in aqueous systems. Generally, flavoring agents and adjuvants are selected for their ability to enhance sensory characteristics or to support the delivery and perception of flavor compounds rather than to provide a distinct taste of their own. In this capacity, Cetyl Alcohol can function as a supporting ingredient that alters mouthfeel or promotes the integration of flavor oil phases into food matrices. Its use is guided by evaluations from expert bodies that assess safety and technological justification for inclusion at specific use levels. Such evaluations consider how the compound interacts with food components, how it behaves under typical processing conditions, and whether consumers could be exposed at levels that are appropriate for the intended application.
Adi Example Calculation
Because Cetyl Alcohol lacks a specific numeric ADI value set by a named regulatory body in the referenced evidence, an illustrative calculation cannot be provided. In typical contexts where an ADI is defined for a food additive, one might take that figure and multiply it by a hypothetical body weight to demonstrate what total intake that figure represents. Without an explicit ADI number from a regulatory evaluation, such a calculation is not possible in a way that adheres to the requirement for direct evidence of numeric regulatory values.
Safety And Health Research
Regulatory and chemical safety evaluations focus on the toxicological profile of Cetyl Alcohol as a fatty alcohol rather than direct physiological effects at typical use levels. Data compiled in chemical safety sheets indicate the compound has relatively low acute toxicity in standard test models, and fatty alcohols of this class are generally considered to exhibit low levels of systemic toxicity. Regulatory panels consider end points such as genotoxicity, repeated dose toxicity, and other hazard parameters when assessing an additive or flavoring substance. However, specific numeric safety thresholds such as an acceptable daily intake (ADI) have not been explicitly presented here because they require direct reference to authoritative evaluations that specify such values. In general, expert evaluations consider whether use levels in food products are sufficiently low to avoid concerns under typical consumption patterns and whether the compound’s metabolic fate supports safe use at intended levels.
Regulatory Status Worldwide
Cetyl Alcohol is referenced in regulatory inventories as a chemical substance that may be evaluated for use in food-related contexts. In the United States, it appears in the Substances Added to Food inventory, which includes food additives listed under various parts of the Code of Federal Regulations and flavoring substances evaluated by expert panels such as FEMA and JECFA. The FDA does not have a single dedicated CFR section for Cetyl Alcohol as a direct food additive; instead, its presence in inventories reflects that agencies track the substance and its evaluations by other authoritative bodies. Consequently, formal FDA approval in the context of specific CFR sections cannot be definitively stated here without explicit regulatory text, and the regulatory notes field reflects that uncertainty. In other jurisdictions, expert panels such as the Joint FAO/WHO Expert Committee on Food Additives maintain databases that include Cetyl Alcohol in searchable specifications for food additives and flavorings evaluated under international guidelines. These international evaluations inform regulatory frameworks and determine whether a given compound is accepted for use at particular levels, though extraction of specific additive numbers or use conditions from those datasets would require direct access to the official JECFA specification entries.
Taste And Functional Properties
As a long-chain fatty alcohol, Cetyl Alcohol exhibits properties more akin to textural modifiers than classic taste-active flavoring agents. It has little intrinsic taste at levels relevant to its functional use in formulations, and its presence in a product is not generally intended to impart a specific sensory flavor. Functionally, Cetyl Alcohol is valued for its behavior at interfaces; it can influence the stability of emulsions, modify the viscosity of mixtures, and interact with fat and water phases in complex formulations. It is insoluble in water, reflecting its hydrophobic character, but dissolves in organic solvents used in flavoring blends or processing aids. Thermal behavior, such as melting point and stability under heat, also influences its selection in specific applications, especially where the physical state of the product or the delivery matrix is critical. Overall, sensory contributions are subtle and often revolve around perceived texture or mouth-coating effects rather than identifiable flavor notes.
Acceptable Daily Intake Explained
An acceptable daily intake (ADI) is a concept used by regulators to express the amount of a substance that can be ingested every day over a lifetime without appreciable health risk, based on toxicological data and application of safety factors. For Cetyl Alcohol, formal ADI values are not included here because such numeric thresholds must be directly sourced from regulatory evaluations that state them explicitly. In the absence of an authoritative ADI value from bodies such as JECFA or EFSA for this compound, general safety discussion focuses on the fact that regulatory frameworks evaluate both hazard and exposure to ensure that any authorized use levels remain well below any thresholds derived from toxicological studies.
Comparison With Similar Additives
Cetyl Alcohol can be compared with other long-chain fatty alcohols or similar agents used as flavoring adjuvants or textural modifiers. For example, lauryl alcohol (a C12 fatty alcohol) shares many functional characteristics, such as being used to modify texture or support emulsion stability in formulations, though differences in chain length influence melting behavior and solubility. Another related compound might be stearyl alcohol (a C18 fatty alcohol), which similarly functions to modify physical properties of a formulation. Compared to small-molecule flavoring agents like esters or aldehydes that provide direct sensory notes, these fatty alcohols serve a supporting role in product systems. In each case, expert regulatory evaluations consider toxicological data relevant to the entire class of fatty alcohols while also recognizing differences that arise from carbon chain length or specific structural features.
Common Food Applications Narrative
In food science and product development, Cetyl Alcohol may be selected for specific technological roles even if it is not a primary flavor contributor. For example, long-chain fatty alcohols like Cetyl Alcohol can act as supporting agents in complex emulsion systems where fat and aqueous phases must be stabilized against separation. These functionalities make them relevant in certain confectionery coatings, aerated products, or flavored oil dispersions where textural uniformity contributes to the consumer experience. Its role as a flavoring adjuvant means it may be used alongside primary flavor ingredients to ensure that volatile or hydrophobic flavor compounds are effectively dispersed and remain consistent throughout the product’s shelf life. In practice, this can support products where flavor consistency and stability are priorities, such as in certain beverage emulsions, rich dessert formulations, or encapsulated flavor systems. As with any ingredient that impacts the physical behavior of formulations, its selection is based on careful consideration of processing conditions, desired sensory outcomes, and regulatory allowances specific to the type of product being developed.
Safety & Regulations
FDA
- Notes: Cannot confirm specific CFR approval language; included in FDA inventories and evaluated by expert panels such as FEMA and JECFA
EFSA
- Notes: No explicit EFSA approval or E number identified from the searched evidence
JECFA
- Notes: Specific ADI and year not available from direct JECFA database search
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