Flavor ingredient regulatory record
Hexanal butane-2,3-diol acetal
Hexanal butane-2,3-diol acetal is an acetal in the fruity family, FEMA GRAS under FEMA number 4384 (CAS 155639-75-1). Its odor is sweet, fruity, green apple, fresh, estery.
- FEMA
- 4384
- CAS
- 155639-75-1
- JECFA
- 1737
- Formula
- C10H20O2
GRAS status: FEMA GRAS, publication 23. Recorded by FDA in the Substances Added to Food inventory under CAS 155639-75-1.
Structure
Identity
Also known as: 1,3-Dioxolane, 4,5-dimethyl-2-pentyl-, 4,5-Dimethyl-2-pentyl-1,3-dioxolane, 4,5-dimethyl-2-pentyl-1,3-dioxolane, 1,3-dioxolane, 4,5-dimethyl-2-pentyl-, hexanal butane-2,3-diol acetal [fifh], hexanal 2,3-butylene glycol acetal, hexanal butane-2,3-diol acetal [fhfi], hexanal butane-2,3-diol acetal (fifh), hexanyl butane-2,3-diol acetal.
Can Hexanal butane-2,3-diol acetal be labeled natural?
Nature occurrence: Not yet found in nature (provisional).
Nature occurrence has not been settled for this substance, so the natural or artificial class is not stated here. The FEMA GRAS status does not depend on it.
Regulatory status, with citations
United States
Hexanal butane-2,3-diol acetal is FEMA GRAS under FEMA number 4384. 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 Hexanal butane-2,3-diol 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 1737, evaluated at the 65th meeting in 2005. no safety concern at current levels of intake.
Other US flags
Not on the California Proposition 65 list.
Odor and taste
Odor: Sweet, fruity, green apple, fresh, estery.
Where it is used
Hexanal butane-2,3-diol acetal 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 Hexanal butane-2,3-diol acetal by structure. Whether one can replace it is a sensory and regulatory call; the reformulation tool works that through.
| Material | FEMA | Similarity | Occurrence |
|---|---|---|---|
| Heptanal propyleneglycol acetal | 4368 | 90% | Not determined |
| Acetaldehyde 1,3-octadiol acetal | 4376 | 89% | Not determined |
| 2-Nonanone propyleneglycol acetal | 4399 | 89% | In nature |
| (+/-) 3-Methyl-gamma-decalactone | 3999 | 69% | In nature |
More acetals in this index
Acetaldehyde di-cis-3-hexenyl acetal · Acetaldehyde 1,3-octadiol acetal · Acetaldehyde diisoamyl acetal · Acetaldehyde butyl phenethyl acetal · Hydroxycitronellal diethyl acetal · Vanillin erythro- & threo-butan-2,3-diol acetal
Hexanal butane-2,3-diol acetal FAQ
Does hexanal butane-2,3-diol acetal have FEMA GRAS status?
Hexanal butane-2,3-diol acetal holds FEMA GRAS status under FEMA number 4384. It is also codified at 21 CFR 172.515.
How do I cite hexanal butane-2,3-diol acetal by FEMA or CAS number?
Cite hexanal butane-2,3-diol acetal as FEMA 4384 or CAS 155639-75-1; both point to the same entry. FEMA files it in the fruity flavor category.
Is hexanal butane-2,3-diol acetal approved in the EU?
No EU FL number is on file for hexanal butane-2,3-diol acetal. It has a JECFA evaluation (JECFA 1737), which the EU list draws on, but the Union List entry itself should be confirmed before EU use.
Has JECFA evaluated hexanal butane-2,3-diol acetal?
Yes. JECFA number 1737, evaluated at the 65th meeting in 2005. Conclusion: no safety concern at current levels of intake.
What does hexanal butane-2,3-diol acetal smell and taste like, and where is it used?
The odor of hexanal butane-2,3-diol acetal is sweet, fruity, green apple, fresh, estery. Typical uses are beverage, confection, fruit flavors, bakery and desserts.
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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 HEXANAL BUTANE-2,3-DIOL ACETAL under CAS 155639-75-1 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.