Flavor ingredient regulatory record
2-Nonanone propyleneglycol acetal
2-Nonanone propyleneglycol acetal is a ketone in the fruity family, FEMA GRAS under FEMA number 4399 (CAS 165191-91-3). Its odor is sweet, fruity, creamy, tropical, floral.
- FEMA
- 4399
- CAS
- 165191-91-3
- JECFA
- 2076
- Formula
- C12H24O2
GRAS status: FEMA GRAS, publication 23. Recorded by FDA in the Substances Added to Food inventory under CAS 165191-91-3.
Structure
Identity
Also known as: 2-heptyl-2,4-dimethyl-1,3-dioxolane, 1,3-dioxolane, 2-heptyl-2,4-dimethyl-, 2-heptyl-2, 4-dimethyl-1,3-dioxolane, 2-nonanone propyleneglycol acetal [fhfi], (+-)-2-nonanone propyleneglycol acetal, 2-nonanone propyleneglycol acetal, (+-)-, (+/-)-2-nonanone propyleneglycol acetal, 2-nonanone propyleneglycol acetal, (+/-)-.
Can 2-Nonanone propyleneglycol acetal be labeled natural?
The process decides for 2-Nonanone propyleneglycol acetal. It occurs in nature, so a natural-source, natural-process material is natural flavor in the US and synthetic 2-Nonanone propyleneglycol acetal 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
2-Nonanone propyleneglycol acetal is FEMA GRAS under FEMA number 4399. It is cited in the Code of Federal Regulations at 21 CFR 172.515.
European Union and United Kingdom
No EU FL number is on file for 2-Nonanone propyleneglycol acetal. That is not a finding either way. The Union List covers defined flavouring substances, so natural complex materials are handled as flavouring preparations under Parts B to F and never receive a number, and substances used as additives sit under Regulation 1333/2008 instead. Confirm the position before EU or UK use.
JECFA (WHO / FAO)
JECFA number 2076, evaluated at the 73rd meeting in 2010. No safety concern at current levels of intake when used as a flavouring agent.
Other US flags
Not on the California Proposition 65 list.
Odor and taste
Odor: Sweet, fruity, creamy, tropical, floral.
Where it is used
2-Nonanone propyleneglycol acetal is used in beverage, confection, fruit flavors, bakery and dairy, typically as a fruity note.
Structurally similar flavor ingredients
Flavor ingredients with a GRAS determination closest to 2-Nonanone propyleneglycol acetal by structure. Whether one can replace it is a sensory and regulatory call; the reformulation tool works that through.
| Material | FEMA | Similarity | Occurrence |
|---|---|---|---|
| Hexanal butane-2,3-diol acetal | 4384 | 89% | Not determined |
| Heptanal propyleneglycol acetal | 4368 | 87% | Not determined |
| Acetaldehyde 1,3-octadiol acetal | 4376 | 84% | Not determined |
| gamma-Decalactone | 2360 | 80% | In nature |
| gamma-Dodecalactone | 2400 | 73% | In nature |
More ketones in this index
3-Nonen-2-one · 3-Pinanone · Isophorone · 3-Octen-2-one · 5-Methyl-5-hexen-2-one · 2,3-Hexanedione
2-Nonanone propyleneglycol acetal FAQ
Does 2-Nonanone propyleneglycol acetal have FEMA GRAS status?
2-Nonanone propyleneglycol acetal holds FEMA GRAS status under FEMA number 4399. The Code of Federal Regulations lists it at 21 CFR 172.515.
How do I cite 2-Nonanone propyleneglycol acetal by FEMA or CAS number?
Cite 2-Nonanone propyleneglycol acetal as FEMA 4399 or CAS 165191-91-3; both point to the same entry. Its flavor category is fruity.
What does 2-Nonanone propyleneglycol acetal smell and taste like, and where is it used?
The odor of 2-Nonanone propyleneglycol acetal is sweet, fruity, creamy, tropical, floral. Typical uses are beverage, confection, fruit flavors, bakery and dairy.
What did JECFA conclude about 2-Nonanone propyleneglycol acetal?
JECFA evaluated 2-Nonanone propyleneglycol acetal at the 73rd meeting in 2010 under JECFA number 2076. The panel concluded: No safety concern at current levels of intake when used as a flavouring agent.
Is 2-Nonanone propyleneglycol acetal approved in the EU?
No EU FL number is on file for 2-Nonanone propyleneglycol acetal. It has a JECFA evaluation (JECFA 2076), which the EU list draws on, but the Union List entry itself should be confirmed before EU use.
Can 2-Nonanone propyleneglycol acetal be labeled a natural flavor?
Nature makes 2-Nonanone propyleneglycol acetal, which is why the US label turns on process. A natural route gives natural flavor; synthesis gives artificial 2-Nonanone propyleneglycol acetal, same molecule. The EU and UK follow the same logic without a middle class; Mercosur and Mexico label synthetic 2-Nonanone propyleneglycol acetal identical-to-natural.
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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 2-NONANONE PROPYLENEGLYCOL ACETAL under CAS 165191-91-3 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.