What is 2-phenoxyethyl Propionate?
2-phenoxyethyl Propionate (CAS Number 23495-12-7) is a synthetic organic compound belonging to the ester chemical class. It consists of a phenoxy group (a benzene ring bonded to an oxygen atom) attached to an ethyl chain, which is then esterified with propionic acid. This molecular structure is characteristic of many synthetic flavor compounds used in the food industry.
The compound is colorless to pale yellow and exists as a liquid at room temperature. Like other synthetic esters used in flavoring, 2-phenoxyethyl Propionate is designed to mimic or enhance natural flavor profiles, particularly those with fruity and slightly floral notes.
Common Uses
2-phenoxyethyl Propionate is primarily used in the food and beverage industry as a flavoring agent. Its applications typically include:
- Flavored beverages (soft drinks, juices, flavored water)
- Confectionery products (candies, chocolates, chewing gum)
- Baked goods and desserts
- Dairy products (yogurts, flavored milk)
- Processed snack foods
The compound is used in very small concentrations—typically measured in parts per million (ppm)—to achieve the desired flavor profile without creating an overpowering taste. As a flavoring adjuvant, it often works in combination with other flavor compounds to create complex taste experiences.
Safety Assessment
2-phenoxyethyl Propionate has not been formally evaluated by the FDA for GRAS (Generally Recognized As Safe) status. However, the absence of GRAS designation does not indicate a safety concern; rather, it reflects that formal safety petitions or determinations have not been submitted or completed with the FDA.
Importantly, the FDA's adverse event database contains zero reported incidents associated with this compound, and there have been no product recalls attributed to its presence in food. This suggests that where it has been used in food applications, it has not generated safety concerns significant enough to warrant regulatory action or public health alerts.
The compound's chemical structure—as an ester derived from propionic acid—places it in a class of compounds with generally recognized safety profiles. Propionic acid and its esters have long histories of use in food applications and are employed as preservatives in many food products.
Regulatory Status
In the United States, 2-phenoxyethyl Propionate is not explicitly listed on the FDA's official GRAS list of flavoring substances. However, this does not prohibit its use in food. Flavoring compounds can be used under FDA regulations when they are incorporated through suppliers who maintain compliance with 21 CFR Part 182 (Substances Generally Recognized as Safe) or when they are subject to Food Additive Petitions.
Regulatory status may vary by country. The European Union maintains different approval lists for flavoring substances, and authorization varies by member state. Manufacturers using this ingredient internationally must ensure compliance with the specific regulations of each target market.
The synthetic nature of this flavoring agent places it under the category of artificial or synthetic flavors rather than natural flavors, and labeling requirements may specify this distinction depending on jurisdiction.
Key Studies
Direct toxicological or safety studies specifically evaluating 2-phenoxyethyl Propionate are not widely published in accessible scientific literature. Most safety information for minor flavoring compounds comes from structure-activity relationship (SAR) assessments and general knowledge of chemical classes rather than from dedicated clinical studies.
Safety assessments for ester-based flavor compounds typically rely on:
- Chemical structure analysis and comparison to known safe compounds
- Metabolism predictions based on similar compounds
- Intended use levels and anticipated human exposure
- General toxicity data for related compounds in the ester class
The absence of adverse event reports and product recalls suggests empirical safety in actual food applications. However, the limited formal toxicological evaluation means that comprehensive safety data specific to this compound may not be publicly available.