Flavor ingredient regulatory record

Ethyl formate

Ethyl formate is an ester in the fruity family, FEMA GRAS under FEMA number 2434 (CAS 109-94-4). Its odor is sweet, fruity, rum, apple, estery.

FEMA
2434
CAS
109-94-4
JECFA
26
EU FL
09.072
Formula
C3H6O2
EC
203-721-0

GRAS status: FEMA GRAS, publication 3. Recorded by FDA in the Substances Added to Food inventory under CAS 109-94-4.

Structure

2D structure of Ethyl formate
Structure of Ethyl formate, C3H6O2. Drawn from the canonical SMILES.

Identity

IUPAC name ethyl formate
CAS number 109-94-4
FEMA number 2434
Molecular formula C3H6O2
Molecular weight 74.08 g/mol
SMILES CCOC=O
InChIKey WBJINCZRORDGAQ-UHFFFAOYSA-N
PubChem CID 8025
EC number 203-721-0
FDA UNII 0K3E2L5553
EPA DTXSID DTXSID6040117
Chemical class Ester
Boiling point 55 °C
Flash point -20 °C

Also known as: Formic acid, ethyl ester, Areginal, Methanoic acid ethyl ester, Ethyl methanoate, NSC 406578, NSC 8828, areginal, formic acid, ethyl ester, ethyl methanoate, ethyl formic ester, aethylformiat, formic ether.

Can Ethyl formate be labeled natural?

Since ethyl formate is found in nature, US labeling follows how it was obtained: natural flavor from a natural source and a natural process, artificial when ethyl formate is synthesized. The EU and UK follow the same logic without a middle class; Mercosur and Mexico label synthetic ethyl formate identical-to-natural.

United States
Natural or artificial, by process
European Union and UK
Natural only from natural material
Mercosur and Mexico
Natural or identical-to-natural

How each market defines the classes: natural vs artificial flavor under 21 CFR 101.22.

Regulatory status, with citations

United States

Ethyl formate is FEMA GRAS under FEMA number 2434. It is cited in the Code of Federal Regulations at 21 CFR 184.1295.

21 CFR 184.1295

European Union and United Kingdom

Listed on the Union List of flavouring substances as FL 09.072, Annex I Part A under Regulation (EC) 1334/2008, evaluation status approved (JECFA). The UK retains the same list.

JECFA (WHO / FAO)

JECFA number 26, evaluated at the 46th meeting in 1996. ADI 0 to 3 mg/kg body weight.

JECFA monograph

Other US flags

Not on the California Proposition 65 list.

TSCA Inventory status

A flavor ingredient is also an industrial chemical. Ethyl formate appears on the EPA Toxic Substances Control Act Chemical Substance Inventory under CAS 109-94-4, where EPA names it Formic acid, ethyl ester.

Active in US commerce

EPA designates this substance active, so no Notice of Activity Form B is required before manufacturing. What active and inactive mean.

EPA publishes no regulatory flags on this listing. What the flags mean.

From the EPA non-confidential TSCA Inventory, July 2026 release. EPA also maintains a confidential portion it does not publish. Search the Inventory by CAS number.

Odor and taste

Odor: Sweet, fruity, rum, apple, estery.

Where it is used

Ethyl formate is used in beverage, confection, fruit flavors and baked goods, typically as a fruity note.

Structurally similar flavor ingredients

Flavor ingredients with a GRAS determination closest to Ethyl formate by structure. Whether one can replace it is a sensory and regulatory call; the reformulation tool works that through.

MaterialFEMASimilarityOccurrence
Butyraldehyde221992%In nature
Ethyl Acetate241481%In nature
2-Butanone217076%In nature
Butyric acid222175%In nature
1-Penten-3-ol358474%In nature

More esters in this index

2,4-Hexadienyl propionate · Tributyl acetylcitrate · Benzyl acetoacetate · cis-Hexenyl tiglate · Butyl isobutyrate · Methyl nicotinate

Ethyl formate FAQ

Does ethyl formate have FEMA GRAS status?

Ethyl formate holds FEMA GRAS status under FEMA number 2434. It is also codified at 21 CFR 184.1295.

How do I cite ethyl formate by FEMA or CAS number?

Cite ethyl formate as FEMA 2434 or CAS 109-94-4; both point to the same entry. FEMA files it in the fruity flavor category.

Can ethyl formate be labeled a natural flavor?

Ethyl formate occurs in nature, so the label depends on the route: ethyl formate won from a natural source by a physical, enzymatic or microbiological process is natural flavor in the United States, and synthesized ethyl formate is artificial. The EU and UK grant the natural claim only to that natural route; Mercosur and Mexico call synthetic material identical-to-natural.

Can ethyl formate be used in the EU and UK?

Ethyl formate is on the EU Union List of flavouring substances as FL 09.072 (Annex I Part A) under Regulation 1334/2008.

Has JECFA evaluated ethyl formate?

Yes. JECFA number 26, evaluated at the 46th meeting in 1996.

What does ethyl formate smell and taste like, and where is it used?

The odor of ethyl formate is sweet, fruity, rum, apple, estery. Typical uses are beverage, confection, fruit flavors and baked goods.

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Guides: What Is FEMA GRAS? · Natural vs artificial · Filing a GRAS notification

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Sources and attribution. The identity and regulatory facts on this page are taken from the FDA Substances Added to Food inventory, a US government record, which lists this substance as ETHYL FORMATE under CAS 109-94-4 and carries its FEMA number, its JECFA flavor number and its 21 CFR citations. The inventory is searchable at FDA. FDA records its technical effect as flavoring agent or adjuvant.

A FEMA GRAS conclusion is reached by the Expert Panel of the Flavor and Extract Manufacturers Association of the United States, and the FEMA number names that conclusion. FEMA publishes its own entry for this substance in the FEMA Flavor Library, which is the authoritative record of what the Panel decided and is worth reading alongside this page.

Ambrose Compliance is not affiliated with, endorsed by, or sponsored by FEMA. FEMA and FEMA GRAS are used here as identifiers for a published regulatory determination, not as marks of any relationship between FEMA and Ambrose.

About this page. Facts come from the FDA Substances Added to Food inventory, the Code of Federal Regulations, the EPA TSCA Inventory, the EU Union List, JECFA and the Ambrose database, with FEMA's published determination cited where it applies; parts of the text are written by Ambrose AI, which can make mistakes. Check the cited source before relying on anything here. This is not regulatory or legal advice.