# 1-octene

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> Markdown URL: https://additivefacts.com/additives/1-octene.md

**Safety rating:** SAFE
**CAS number:** 111-66-0
**Category:** flavoring
**FDA GRAS:** no
**Adverse events (FDA AERS):** 0
**FDA recalls:** 0
**Last updated:** 2026-04-04

## Summary

1-Octene is an organic compound used as a flavoring agent in food products. It is a colorless liquid hydrocarbon that occurs naturally in some fruits and plants, and is employed in small quantities to enhance or impart fruity and herbal notes in various food and beverage formulations.

## Regulatory status

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

## Detailed analysis

## What is 1-Octene?

1-Octene (CAS Number 111-66-0) is an unsaturated hydrocarbon belonging to the alkene class of organic compounds. It consists of an eight-carbon chain with one carbon-carbon double bond, making it a C8 alkene. The compound exists as a colorless, volatile liquid with a slightly fruity odor. While 1-octene has industrial applications in polymer and chemical manufacturing, it is also used in limited quantities in the food industry as a flavoring agent.

## Common Uses

In food applications, 1-octene functions as a flavoring agent or flavor adjuvant. It is typically used in very small concentrations to contribute fruity, herbal, and slightly woody notes to food and beverage products. The compound's natural occurrence in certain fruits and plant materials has led to its adoption in formulating complex flavor profiles for processed foods, beverages, and food additives. Its primary role is to enhance or create specific sensory characteristics rather than serve as a preservative or functional ingredient.

## Safety Assessment

According to FDA records, there have been zero adverse events reported in connection with 1-octene as a food additive. Additionally, no product recalls have been linked to this ingredient. The absence of reported adverse events suggests a low incidence of consumer health complaints associated with its use in food products.

The toxicological profile of 1-octene has been evaluated through standard safety testing protocols. As a volatile organic compound, exposure through food consumption is expected to be minimal given the small quantities used as a flavoring agent. The compound's rapid volatilization and metabolism in the body further reduce potential for accumulation.

## Regulatory Status

1-Octene is not on the FDA's Generally Recognized As Safe (GRAS) list. This designation does not necessarily indicate safety concerns but rather reflects that the compound has not undergone the formal GRAS affirmation process with the FDA. Some flavoring substances are used under FDA's Food Additive Regulations with established acceptable uses and specifications without formal GRAS status.

Flavorings in the United States are regulated under 21 CFR Part 182 (GRAS Substances) and 21 CFR Part 184 (Direct Food Substances Affirmed as GRAS). While 1-octene does not appear on the GRAS affirmation list, it may be used under the authority of other regulatory frameworks governing flavor additives, or its use may fall under historical precedent of safe use in food flavoring.

International regulatory approaches vary. The European Union maintains strict guidelines for flavoring substances, with evaluations conducted by the European Food Safety Authority (EFSA). Regulatory status differs by country and may be subject to specific concentration limitations and approved food categories.

## Key Studies

Limited published peer-reviewed literature specifically addresses 1-octene's safety in food applications. Most toxicological data on 1-octene derives from occupational exposure studies and industrial safety assessments rather than food safety research. General alkene compounds undergo standard acute toxicity, repeated-dose toxicity, and genetic toxicity evaluations as part of chemical safety assessment protocols.

The narrow margin between GRAS-affirmed and non-affirmed flavoring compounds often reflects the level of formal testing and documentation submitted to regulatory agencies rather than significant differences in inherent safety. The zero adverse events reported to the FDA combined with decades of use in food flavoring applications suggests that 1-octene has an acceptable safety profile when used at appropriate levels for flavoring purposes.

For current and comprehensive information regarding 1-octene's regulatory status and approved uses, consult the FDA's Food Additive Status List and current Code of Federal Regulations.

## 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. "1-octene — Safety, regulation, and evidence." https://additivefacts.com/additives/1-octene. Accessed 2026-05-20.