# Decyl Butyrate

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**Safety rating:** UNKNOWN
**CAS number:** 5454-09-1
**Category:** flavoring
**FDA GRAS:** no
**Adverse events (FDA AERS):** 0
**FDA recalls:** 0
**Last updated:** 2026-04-02

## Summary

Decyl butyrate (CAS 5454-09-1) is a synthetic ester compound used as a flavoring agent in food products. It imparts fruity, waxy, or creamy flavoring notes and is utilized in small quantities to enhance taste profiles in various 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 Decyl Butyrate?

Decyl butyrate is a synthetic ester formed from the combination of decanol (a 10-carbon alcohol) and butyric acid (a 4-carbon fatty acid). It appears as a colorless to pale yellow liquid with a fruity and slightly waxy aroma. The compound is classified as a flavoring agent or flavoring adjuvant in food applications, meaning it is used to enhance or modify the taste and aroma of food and beverage products.

## Common Uses

Decyl butyrate is employed primarily in the flavor industry as a component of complex flavor formulations. Its fruity and creamy sensory characteristics make it useful in:

- Processed fruit-flavored products
- Confectionery and candy applications
- Beverage flavoring systems
- Dairy-based desserts and flavorings
- Baked goods and snack formulations

As with most synthetic flavor compounds, decyl butyrate is used in very small concentrations—typically measured in parts per million (ppm)—to achieve desired sensory effects without contributing significant calories or nutritional impact.

## Safety Assessment

Decyl butyrate has not received Generally Recognized As Safe (GRAS) status from the FDA, which means it has not undergone the formal GRAS notification process or affirmation. However, this designation does not indicate the substance is unsafe; rather, it reflects the status of regulatory review and documentation.

The FDA's adverse event database reports zero reported adverse events associated with decyl butyrate, and no recalls involving this additive have been issued. This absence of reported safety incidents in the post-market surveillance system suggests that if the compound is in use, it has not generated consumer complaints or identified health concerns requiring regulatory action.

As a synthetic ester, decyl butyrate is structurally similar to other approved food flavor compounds. Esters of this type are generally considered to have low systemic toxicity when consumed in the small quantities typical of food flavoring applications. The butyric acid component is a naturally occurring short-chain fatty acid found in various foods, and decyl alcohol is a higher-chain alcohol used in various industrial and food applications.

## Regulatory Status

In the United States, decyl butyrate's regulatory status is complex. While it is not GRAS-affirmed, it may be used as a flavor ingredient under FDA regulations if it meets certain conditions. The FDA allows the use of flavoring substances that are not GRAS if they have been used in a manner consistent with prior approval or if they fall under the category of substances that may be safely used as flavoring ingredients.

The European Union's regulatory framework for flavorings is more stringent, requiring flavoring compounds to undergo formal safety evaluation through the European Food Safety Authority (EFSA) before authorization. The regulatory status of decyl butyrate in the EU would depend on its inclusion in approved flavor compound lists.

Manufacturers using decyl butyrate are responsible for ensuring that its use complies with applicable regulations in their respective jurisdictions and that final food products meet all safety and labeling requirements.

## Key Studies

Limited published scientific literature specifically addresses decyl butyrate toxicity or safety. The compound has not been the subject of extensive regulatory toxicology studies published in the open literature, partly because many flavor industry safety assessments are conducted confidentially by manufacturers and regulatory bodies.

General toxicological principles for synthetic esters and structure-activity relationships suggest that compounds of this class present low acute toxicity. However, specific chronic toxicity, genotoxicity, or reproductive/developmental toxicity studies on decyl butyrate specifically are not readily available in public databases.

Future safety data may emerge if the substance undergoes formal GRAS notification or if regulatory authorities in regions like the EU request comprehensive safety dossiers for authorization.

## 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. "Decyl Butyrate — Safety, regulation, and evidence." https://additivefacts.com/additives/decyl-butyrate. Accessed 2026-05-19.