# Diisoamyl Disulfide

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**Safety rating:** UNKNOWN
**CAS number:** 2051-04-9
**Category:** flavoring
**FDA GRAS:** no
**Adverse events (FDA AERS):** 0
**FDA recalls:** 0
**Last updated:** 2026-04-02

## Summary

Diisoamyl disulfide is a synthetic flavoring agent belonging to the sulfur compound family, used to impart savory, meaty, and roasted notes to food products. It is not currently approved by the FDA as a Generally Recognized as Safe (GRAS) substance but has no reported adverse events or recalls.

## 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 Diisoamyl Disulfide?

Diisoamyl disulfide (CAS Number 2051-04-9) is a synthetic organic compound classified as a flavoring agent. It belongs to a group of sulfur-containing compounds known for producing characteristic meaty, savory, and roasted flavor profiles. The compound consists of two isoamyl groups connected by a disulfide bond (S-S), a structural feature common in many naturally-derived and synthetic food flavoring compounds.

## Common Uses

Diisoamyl disulfide is used primarily as a flavoring adjuvant in processed foods where savory or meat-like flavor enhancement is desired. These applications may include:

- Meat and poultry flavoring formulations
- Savory snack seasonings
- Soup and broth bases
- Processed meat products
- Gravy and sauce formulations
- Cheese flavoring systems

The compound contributes sulfurous, umami-adjacent notes that enhance the perception of meatiness and depth in food products. Its use typically involves very small quantities, as sulfur-containing flavor compounds are highly potent.

## Safety Assessment

Diisoamyl disulfide has no reported adverse events or FDA recalls associated with it. However, it is important to note that this compound does not hold GRAS (Generally Recognized as Safe) status with the FDA, meaning it has not undergone the formal approval process for use as a food additive in the United States.

Lack of GRAS status does not necessarily indicate safety concerns; rather, it reflects the status of regulatory review and approval. Many flavoring compounds operate under different regulatory frameworks, including the use of flavor ingredient databases maintained by flavor industry organizations and compliance with international standards.

The absence of adverse event reports and recalls suggests that where it has been used, no safety signals have emerged. However, comprehensive toxicological data on this specific compound may be limited in publicly available literature.

## Regulatory Status

In the United States, diisoamyl disulfide is not FDA GRAS approved. Its regulatory status may vary by country and jurisdiction. Some flavor compounds are regulated through different pathways, including:

- Flavor industry self-regulatory systems
- International flavor ingredient databases (such as those maintained in the European Union)
- Use under food additive regulations in specific countries

Manufacturers seeking to use this compound in food products should verify its legal status and any required documentation or safety substantiation for their specific jurisdiction and intended use.

## Key Studies

Publicly available peer-reviewed literature specifically studying diisoamyl disulfide is limited. General knowledge about this compound derives from:

- Chemical databases and flavor industry specifications
- General toxicological knowledge regarding structurally similar sulfur-containing compounds
- FDA flavor ingredient review processes

Research on related disulfide compounds suggests that sulfur-containing flavoring agents are metabolized relatively quickly in the body and are used at concentrations far below levels that would produce adverse effects. However, specific pharmacokinetic or toxicological studies on diisoamyl disulfide may not be readily available in public databases.

The flavor industry maintains proprietary safety data on approved flavoring substances, and regulatory agencies conduct assessments based on submitted safety dossiers. The lack of adverse event reports suggests current use levels maintain an acceptable safety margin.

## 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. "Diisoamyl Disulfide — Safety, regulation, and evidence." https://additivefacts.com/additives/diisoamyl-disulfide. Accessed 2026-05-19.