# Acetaldehyde Phenethyl Propyl Acetal

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**Safety rating:** UNKNOWN
**CAS number:** 7493-57-4
**Category:** flavoring
**FDA GRAS:** no
**Adverse events (FDA AERS):** 0
**FDA recalls:** 0
**Last updated:** 2026-04-02

## Summary

Acetaldehyde phenethyl propyl acetal is a synthetic flavoring compound used to enhance and modify flavors in food products. It belongs to a class of acetal compounds designed to provide specific taste and aroma characteristics in processed foods and beverages.

## Regulatory status

| Country | Status |
| --- | --- |
| United States | approved |
| European Union | not_evaluated |
| United Kingdom | not_evaluated |
| Canada | not_evaluated |
| Australia | not_evaluated |
| Japan | not_evaluated |
| South Korea | not_evaluated |
| Brazil | not_evaluated |
| China | not_evaluated |
| India | not_evaluated |

## Detailed analysis

## What is Acetaldehyde Phenethyl Propyl Acetal?

Acetaldehyde phenethyl propyl acetal (CAS Number: 7493-57-4) is a synthetic organic compound classified as a flavoring agent and flavor enhancer. It is an acetal—a type of chemical compound formed through the reaction of an aldehyde with alcohols. This particular compound combines acetaldehyde with phenethyl and propyl components to create a molecule with specific organoleptic properties suitable for food applications.

As a synthetic flavoring, it does not occur naturally and is manufactured through chemical synthesis for use exclusively in food formulations. The compound is designed to provide or enhance particular flavor notes in food and beverage products.

## Common Uses

Acetaldehyde phenethyl propyl acetal is used as a flavoring agent and flavor enhancer in processed foods and beverages. Its specific applications include:

- Flavoring in beverages, including alcoholic and non-alcoholic drinks
- Enhancement of flavor profiles in confectionery products
- Flavoring adjuvant in processed food products
- Use in food formulations where specific taste and aroma characteristics are desired

The compound typically appears in food products in very small quantities, as is standard practice with synthetic flavor compounds. Exact usage levels vary depending on the desired flavor intensity and the specific food application.

## Safety Assessment

Acetaldehyde phenethyl propyl acetal has not received FDA GRAS (Generally Recognized as Safe) status, which means it has not undergone the formal GRAS determination process. However, this distinction does not indicate that the compound is unsafe; rather, it reflects the regulatory pathway and documentation status.

The absence of reported adverse events related to this additive in FDA databases and the lack of any food recalls associated with it suggest no significant safety concerns have been identified in real-world food use. The compound's safety profile appears stable based on available data, though the limited GRAS designation indicates that comprehensive safety documentation through formal channels has not been completed or submitted to the FDA.

Toxicological considerations for acetal-based compounds generally involve:

- Acute toxicity assessment
- Potential metabolic pathways
- Cumulative exposure evaluation
- Purity and manufacturing specifications

As with all synthetic flavor compounds used in food, regulatory agencies require that usage levels remain well below any identified threshold of concern and that the compound's chemical identity and manufacturing process meet established purity standards.

## Regulatory Status

In the United States, acetaldehyde phenethyl propyl acetal does not hold FDA GRAS status, meaning it may be subject to stricter regulatory oversight than GRAS-affirmed ingredients. However, its presence in food products and the absence of enforcement actions or recalls suggest it may be used under specific regulatory provisions or exemptions.

The FDA maintains comprehensive databases on food additives, and the zero adverse events and zero recalls associated with this compound indicate no significant safety signals have emerged from market surveillance or consumer reports.

Regulatory status varies internationally. Manufacturers intending to use this flavoring in different countries should verify compliance with the specific requirements of the European Union, Canada, Australia, and other jurisdictions where their products are marketed, as flavor ingredient regulations differ significantly across regions.

## Key Studies

Limited published peer-reviewed research is available specifically on acetaldehyde phenethyl propyl acetal. The compound's safety evaluation would typically rely on:

- Standard toxicological testing protocols
- Structural relationship assessment to known safe compounds
- Metabolism and pharmacokinetic studies
- Purity analysis and specification setting

The lack of reported adverse events and recalls in FDA databases represents the most significant real-world safety data available for this additive. Manufacturers using this flavoring agent are responsible for maintaining appropriate documentation of its safety and ensuring compliance with food additive regulations in their operating jurisdictions.

## Sources

- FDA Substances Added to Food (CFSAN)
- OpenFDA Adverse Event Reporting System (AERS)
- OpenFDA Food Recalls
- EFSA OpenFoodTox
- EU Food Additive Portal

## Citation

Additive Facts. "Acetaldehyde Phenethyl Propyl Acetal — Safety, regulation, and evidence." https://additivefacts.com/additives/acetaldehyde-phenethyl-propyl-acetal. Accessed 2026-05-19.