# Butyl Beta-naphthyl Ether

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**Safety rating:** UNKNOWN
**CAS number:** 10484-56-7
**Category:** flavoring
**FDA GRAS:** no
**Adverse events (FDA AERS):** 0
**FDA recalls:** 0
**Last updated:** 2026-04-02

## Summary

Butyl Beta-naphthyl Ether (CAS 10484-56-7) is an organic compound used as a flavoring agent in food products. It functions as a flavor adjuvant to enhance or modify taste profiles in various food and beverage applications.

## 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 Butyl Beta-naphthyl Ether?

Butyl Beta-naphthyl Ether is a synthetic organic compound classified as a flavoring agent or flavor adjuvant. It is composed of a naphthyl group (a bicyclic aromatic hydrocarbon) bonded to a butyl alkyl chain through an ether linkage. This molecular structure (CAS Number 10484-56-7) allows it to contribute specific aromatic properties to food products.

## Common Uses

This compound is used in the food industry as a flavoring agent, primarily to enhance or modify taste and aroma characteristics in various food and beverage products. Like many synthetic flavor compounds, it may be used in small concentrations to achieve desired sensory profiles. The specific applications would typically include beverages, confectionery, or other processed foods where flavor enhancement is desired. However, detailed usage information is limited in publicly available sources, reflecting the specialized nature of industrial flavoring applications.

## Safety Assessment

Butyl Beta-naphthyl Ether has not been approved by the FDA as a Generally Recognized as Safe (GRAS) substance. This designation indicates that the additive has not undergone the formal GRAS affirmation process with the FDA, which typically requires substantial scientific evidence of safety under intended conditions of use.

According to FDA records, there are no reported adverse events associated with this additive and no recalls linked to its use. This absence of documented safety incidents does not necessarily indicate comprehensive safety data, but rather reflects the current state of reported problems in the food supply.

The lack of GRAS status suggests that manufacturers using this ingredient would need to operate under Food Additive Petition procedures or use it within specific regulatory frameworks that may vary by jurisdiction. In some cases, compounds used in flavoring may be permitted under different regulatory pathways depending on usage levels and intended applications.

## Regulatory Status

In the United States, Butyl Beta-naphthyl Ether is not listed as a GRAS flavoring agent by the FDA. This means it does not have blanket approval for use in food and would require specific regulatory clearance or petition for food additive use. Manufacturers must comply with FDA regulations regarding food additives, which include demonstrating safety for the intended use level.

The regulatory status in other jurisdictions, such as the European Union, may differ. The EFSA (European Food Safety Authority) and other regional regulatory bodies maintain separate lists of approved flavoring substances. It is essential for food manufacturers to verify the regulatory status of this ingredient in their specific markets before use.

## Key Studies

Limited peer-reviewed scientific literature is readily available on Butyl Beta-naphthyl Ether specifically. Many synthetic flavor compounds undergo safety evaluation through proprietary industry studies that may not be published in open literature. For additives with GRAS or approved status, manufacturers typically submit safety dossiers to regulatory agencies, though these may contain confidential business information.

The absence of reported adverse events and recalls suggests no significant safety concerns have emerged from current or historical use. However, comprehensive toxicological studies specific to this compound would be necessary to make definitive safety claims. Researchers, manufacturers, and regulatory agencies interested in this ingredient should consult the FDA's Color Additives Status List and the International Numbering System (INS) for flavor compounds for the most current regulatory information.

For those seeking detailed safety data, the original food additive petition or safety studies (if available) would provide the most comprehensive scientific assessment.

## 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. "Butyl Beta-naphthyl Ether — Safety, regulation, and evidence." https://additivefacts.com/additives/butyl-beta-naphthyl-ether. Accessed 2026-05-12.