Flavor ingredient regulatory record
Ethyl trans-2-cis-4-decadienoate
Ethyl trans-2-cis-4-decadienoate is an ester in the fruity family, FEMA GRAS under FEMA number 3148 (CAS 3025-30-7). Its odor is sweet, fruity, tropical, floral, berry.
- FEMA
- 3148
- CAS
- 3025-30-7
- JECFA
- 1192
- EU FL
- 09.260
- Formula
- C12H20O2
- EC
- 221-178-8
GRAS status: FEMA GRAS, publication 4. Recorded by FDA in the Substances Added to Food inventory under CAS 3025-30-7.
Structure
Identity
Also known as: 2,4-Decadienoic acid, ethyl ester, (2E,4Z)-, 2,4-Decadienoic acid, ethyl ester, (E,Z)-, Ethyl trans-2,cis-4-decadienoate, Ethyl (2E,4Z)-decadienoate, Ethyl (E,Z)-2,4-decadienoate, Ethyl (2E,4Z)-2,4-decadienoate, Pear ester, ethyl (2e,4z)-deca-2,4-dienoate, ethyl (2e,4z)-decadienoate, ethyl (e,z)-2,4-decadienoate, 2,4-decadienoic acid, ethyl ester, (2e,4z)-, ethyl trans-2,cis-4-decadienoate.
Can Ethyl trans-2-cis-4-decadienoate be labeled natural?
Ethyl trans-2-cis-4-decadienoate occurs in nature, so the label depends on the route: ethyl trans-2-cis-4-decadienoate won from a natural source by a physical, enzymatic or microbiological process is natural flavor in the United States, and synthesized ethyl trans-2-cis-4-decadienoate is artificial. In the EU and UK the natural claim likewise needs the natural route, while Mercosur and Mexico keep a third class, identical-to-natural, for the synthetic material.
- 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 trans-2-cis-4-decadienoate is FEMA GRAS under FEMA number 3148. It is cited in the Code of Federal Regulations at 21 CFR 172.515.
European Union and United Kingdom
Listed on the Union List of flavouring substances as FL 09.260, Annex I Part A under Regulation (EC) 1334/2008, evaluation status approved (EFSA). The UK retains the same list.
JECFA (WHO / FAO)
JECFA number 1192, evaluated at the 61st meeting in 2003. no safety concern at current levels of intake.
Other US flags
Not on the California Proposition 65 list.
TSCA Inventory status
A flavor ingredient is also an industrial chemical. Ethyl trans-2-cis-4-decadienoate appears on the EPA Toxic Substances Control Act Chemical Substance Inventory under CAS 3025-30-7, where EPA names it 2,4-Decadienoic acid, ethyl ester, (2E,4Z)-.
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, tropical, floral, berry.
Where it is used
Ethyl trans-2-cis-4-decadienoate is used in beverage, confection, fruit flavors, bakery and desserts, typically as a fruity note.
Structurally similar flavor ingredients
Flavor ingredients with a GRAS determination closest to Ethyl trans-2-cis-4-decadienoate by structure. Whether one can replace it is a sensory and regulatory call; the reformulation tool works that through.
| Material | FEMA | Similarity | Occurrence |
|---|---|---|---|
| Propyl 2,4-decadienoate | 3648 | 96% | In nature |
| Methyl (E)-2-(Z)-4-decadienoate | 3859 | 95% | In nature |
| trans-2-Octen-1-yl butanoate | 3517 | 90% | In nature |
More esters in this index
3-Hexenyl 3-methylbutanoate · Furfuryl pentanoate · alpha-Methylbenzyl acetate · Isoamyl salicylate · l-Menthyl acetoacetate · Ethyl hexadecanoate
Ethyl trans-2-cis-4-decadienoate FAQ
Does ethyl trans-2-cis-4-decadienoate have FEMA GRAS status?
Ethyl trans-2-cis-4-decadienoate holds FEMA GRAS status under FEMA number 3148. It is also codified at 21 CFR 172.515.
How do I cite ethyl trans-2-cis-4-decadienoate by FEMA or CAS number?
Cite ethyl trans-2-cis-4-decadienoate as FEMA 3148 or CAS 3025-30-7; both point to the same entry. FEMA files it in the fruity flavor category.
Can ethyl trans-2-cis-4-decadienoate be labeled a natural flavor?
Since ethyl trans-2-cis-4-decadienoate is found in nature, US labeling follows how it was obtained: natural flavor from a natural source and a natural process, artificial when ethyl trans-2-cis-4-decadienoate is synthesized. In the EU and UK the natural claim likewise needs the natural route, while Mercosur and Mexico keep a third class, identical-to-natural, for the synthetic material.
Can ethyl trans-2-cis-4-decadienoate be used in the EU and UK?
Ethyl trans-2-cis-4-decadienoate is on the EU Union List of flavouring substances as FL 09.260 (Annex I Part A) under Regulation 1334/2008.
Has JECFA evaluated ethyl trans-2-cis-4-decadienoate?
Yes. JECFA number 1192, evaluated at the 61st meeting in 2003. Conclusion: no safety concern at current levels of intake.
What does ethyl trans-2-cis-4-decadienoate smell and taste like, and where is it used?
The odor of ethyl trans-2-cis-4-decadienoate is sweet, fruity, tropical, floral, berry. Typical uses are beverage, confection, fruit flavors, bakery and desserts.
Ingredient lookup
Check an ingredient
Start typing to search the ingredient corpus.
Or browse every ingredient page, A to Z.
Guides: What Is FEMA GRAS? · Natural vs artificial · Filing a GRAS notification
Check Ethyl trans-2-cis-4-decadienoate in a formula
Screened against FEMA GRAS, 21 CFR and EU rules as you build. Free to start.
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 TRANS-2,CIS-4-DECADIENOATE under CAS 3025-30-7 and carries its FEMA number, its JECFA flavor number. 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.