Ethyl maltol
CAS Number: 4940-11-8
Chemical Formula: C7H8O3
Synonyms:
2-Ethyl-3-hydroxy-4H-pyran-4-one, Ethyl maltol
PYRAN-4-ONE,3-HYDROXY-2-METHYL-,2-ETHYLESTER
ETHYLMALTOL FCCIV
Appearance: White to Yellow Powder
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Ethyl maltol (CAS#4940-11-8) appears as white crystalline powder with a melting point of 90–91°C. It emits an intensely sweet caramel‑like aroma, and its flavoring potency is 4 to 6 times stronger than maltol. Various synthetic routes are available for its production. In a typical one‑pot synthesis, α‑ethylfurfuryl alcohol undergoes halogenation to form 4‑halo‑6‑hydroxy‑2‑ethyl‑2H‑pyran‑3(6H)‑one, which can be directly hydrolyzed in aqueous solution to yield ethyl maltol without isolation.
Ethyl maltol features a persistent sweet, fruity odor and a pleasant sweet‑fruity taste with an initial mild bitter‑tart note, followed by rapid flavor fading. Its flavor enhancement effect is 4–6 times more powerful than maltol.
Parameters
| Property | Value |
| Melting point | 85-95 °C (lit.) |
| Boiling point | 196.62°C (rough estimate) |
| density | 1.1624 (rough estimate) |
| vapor pressure | 0.2Pa at 24℃ |
| refractive index | 1.4850 (estimate) |
| FEMA | 3487 | ETHYL MALTOL |
| storage temp. | 2-8°C |
| solubility | Chloroform (Slightly), Methanol (Slightly) |
| pka | 8.38±0.10(Predicted) |
| form | Solid |
| color | White to Pale Yellow |
| Odor | at 5.00 % in benzyl alcohol. sweet caramel jam strawberry cotton candy |
| Odor Type | caramellic |
| biological source | synthetic |
| Water Solubility | 9.345g/L at 24℃ |
| Merck | 14,3824 |
| JECFA Number | 1481 |
| Cosmetics Ingredients Functions | PERFUMING FRAGRANCE |
| LogP | 2.9 at 25℃ |
| CAS DataBase Reference | 4940-11-8(CAS DataBase Reference) |
| NIST Chemistry Reference | 4H-pyran-4-one, 2-ethyl-3-hydroxy-(4940-11-8) |
| EPA Substance Registry System | 4H-Pyran-4-one, 2-ethyl-3-hydroxy- (4940-11-8) |
Safety Information
| Item | Value |
| Hazard Codes | Xn |
| Risk Statements | 22 |
| Safety Statements | 36 |
| WGK Germany | 3 |
| RTECS | UQ0840000 |
| TSCA | TSCA listed |
| HS Code | 29329990 |
| Toxicity | LD50 orally in male mice, male rats, female rats, chicks (mg/kg): 780, 1150, 1200, 1270 (Gralla) |
Product Application
Ethyl maltol serves as a highly effective flavor and fragrance booster in food products, including baked goods, drinks, and artificial berry or citrus flavors. It also reduces unpleasant off‑notes in tobacco, cough syrups, vitamins, cosmetics, and saccharin‑containing items.
As a food additive, ethyl maltol is a white crystalline material with a characteristic odor and sweet fruity taste. It melts at approximately 90°C, is slightly soluble in water and propylene glycol, and dissolves in alcohol and chloroform. It is manufactured via chemical synthesis.
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