3-Ethyl-2-hydroxy-2-cyclopenten-1-one
- CAS No.
- 21835-01-8
- Chemical Name:
- 3-Ethyl-2-hydroxy-2-cyclopenten-1-one
- Synonyms
- 2-Cyclopenten-1-one, 3-ethyl-2-hydroxy-;ETHYL CYCLOPENTENOLONE;FEMA 3152;Ethyl Cyclopentenlone;Ethyl Eyelopentenolone;ETHYL CYCLOPENTENOLON 50%;ISOVALERIC ACID 99+% FCC;Ethyl cyclopentenol ketone;ETHYL CYCLOPENTENOLONE PURE;Ethyl Cyclopentenolone (50%)
- CBNumber:
- CB6199223
- Molecular Formula:
- C7H10O2
- Molecular Weight:
- 126.15
- MDL Number:
- MFCD00012391
- MOL File:
- 21835-01-8.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Melting point | 39.0 to 43.0 °C |
|---|---|
| Boiling point | 75°C/0.3mmHg(lit.) |
| Density | 1.066 at 25 °C |
| refractive index |
n |
| FEMA | 3152 | 3-ETHYL-2-HYDROXY-2-CYCLOPENTEN-1-ONE |
| FLAVIS Number | 07.057 | 3-Ethylcyclopentan-1,2-dione |
| Flash point | 225 °F |
| storage temp. | 2-8°C |
| solubility | soluble in Methanol,Ether |
| form | powder to crystal |
| pka | 9.17±0.20(Predicted) |
| color | White to Orange to Green |
| Odor | at 1.00 % in propylene glycol. sweet caramel maple fenugreek |
| Odor Type | caramellic |
| biological source | synthetic |
| JECFA Number | 419 |
| Major Application | flavors and fragrances |
| InChI | 1S/C7H10O2/c1-2-5-3-4-6(8)7(5)9/h9H,2-4H2,1H3 |
| InChIKey | JHWFWLUAUPZUCP-UHFFFAOYSA-N |
| SMILES | O=C1CCC(CC)=C1O |
| LogP | 0.83 |
| CAS DataBase Reference | 21835-01-8(CAS DataBase Reference) |
| Substances Added to Food (formerly EAFUS) | 3-ETHYL-2-HYDROXY-2-CYCLOPENTEN-1-ONE |
| EWG's Food Scores | 1 |
| FDA UNII | XH8EA788C9 |
| NIST Chemistry Reference | 2-Cyclopenten-1-one, 3-ethyl-2-hydroxy-(21835-01-8) |
| EPA Substance Registry System | 2-Cyclopenten-1-one, 3-ethyl-2-hydroxy- (21835-01-8) |
| UNSPSC Code | 12352100 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H317 | |||||||||
| Precautionary statements | P261-P272-P280-P333+P313-P362+P364-P501 | |||||||||
| Hazard Codes | Xn,Xi | |||||||||
| Risk Statements | 20/22-43 | |||||||||
| Safety Statements | 26-36-36/37 | |||||||||
| WGK Germany | 3 | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 29144000 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| Hazard Classifications | Skin Sens. 1 | |||||||||
| NFPA 704 |
|
3-Ethyl-2-hydroxy-2-cyclopenten-1-one price More Price(28)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | W315230 | Ethylcyclopentenolone natural, 97%, FG | 21835-01-8 | sample-k | $87.7 | 2024-03-01 | Buy |
| Sigma-Aldrich | W315230 | Ethylcyclopentenolone natural, 97%, FG | 21835-01-8 | 100g | $498 | 2024-03-01 | Buy |
| Sigma-Aldrich | W315230 | Ethylcyclopentenolone natural, 97%, FG | 21835-01-8 | 500g | $2090 | 2024-03-01 | Buy |
| Sigma-Aldrich | W315230 | Ethylcyclopentenolone natural, 97%, FG | 21835-01-8 | 1kg | $3560 | 2024-03-01 | Buy |
| Sigma-Aldrich | 301744 | 3-Ethyl-2-hydroxy-2-cyclopenten-1-one solution 50 wt. % in propylene glycol | 21835-01-8 | 25g | $106 | 2023-01-07 | Buy |
3-Ethyl-2-hydroxy-2-cyclopenten-1-one Chemical Properties, Uses, Production
Chemical Properties
3-Ethyl-2-hydroxy-2-cyclopenten-1-one has a caramel-like flavor. This compound is often employed to impart a caramel flavor or coconut notes in food. The compound exhibits flavor-enhancing characteristics.
Uses
flavors and fragrances
Definition
ChEBI: 3-Ethyl-2-hydroxycyclopent-2-en-1-one is a cyclic ketone.
Preparation
From 5-methyl-3,5-dicarbethoxy-2-cyclopen-ten-2-ol-one and phosphoric acid; by a patented process; also from dimethyl adipate.
Aroma threshold values
Aroma characteristics at 0.5%: sweet, brown, caramellic, maple, brown sugar, rum, whiskey, furanone.
Taste threshold values
A threshold value of 5 ppm, similar to the 3-methyl analog, has been determined by comparative sensory evaluation. Taste characteristics at 12 ppm: sweet, jamy, fruity, brown, toasted, maple, nutty
General Description
3-Ethyl-2-hydroxy-2-cyclopenten-1-one is formed by thermal degradation of ascorbic acid. It is an aroma compound formed from the reactions of L-ascorbic acid with L-threonine/L-serine at different pH values.
3-Ethyl-2-hydroxy-2-cyclopenten-1-one Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Wuhan Qingshan Heyuan Biotechnology Co., Ltd | 027-18327024450 18327024450 | 2130026275@qq.com | China | 4298 | 58 |
| Wuhan ShuEr Biology Technology Co.,Ltd | 027-15827133616-6 15827133616 | 1799696397@qq.com | China | 1696 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| TCI (Shanghai) Development Co., Ltd. | 021-67121386 | Sales-CN@TCIchemicals.com | China | 24512 | 81 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
| Shanghai Hanhong Scientific Co.,Ltd. | 021-54306202 13764082696 | info@hanhongsci.com | China | 42917 | 64 |
| jiliang chemicals | 21-62165282 | bidingchem@163.com | China | 1395 | 60 |
| Shijiazhuang Lida Chemical Co., Ltd. | +86 (311) 8573-7996 | service@lid-ff.cn | China | 294 | 65 |
| Qingdao Free Trade Zone United International Co.,Ltd. | 0532-83893697 18561902820 | sissili@unitedint.com | China | 352 | 58 |
| Shanghai civi chemical technology co.,Ltd | 86-21-34053660 | sale@labgogo.com | China | 9853 | 52 |
View Latest Price from 3-Ethyl-2-hydroxy-2-cyclopenten-1-one manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-06-30 | 3-Ethyl-2-hydroxy-2-cyclopenten-1-one
21835-01-8
|
1KG | 99.0% | 10000KGS | Shaanxi Dideu New Materials Co. Ltd | ||
 |
2026-03-20 | 3-Ethyl-2-hydroxy-2-cyclopenten-1-one
21835-01-8
|
$10.00 | 1KG | 99% | 5tons | Hebei Chuanghai Biotechnology Co., Ltd | |
 |
2025-06-27 | 3-Ethyl-2-hydroxy-2-cyclopenten-1-one
21835-01-8
|
1KG | 99% | 500000kg | Hebei Chuanghai Biotechnology Co., Ltd |
-
- 3-Ethyl-2-hydroxy-2-cyclopenten-1-one
21835-01-8
- 99.0%
- Shaanxi Dideu New Materials Co. Ltd
-
- 3-Ethyl-2-hydroxy-2-cyclopenten-1-one
21835-01-8
- $10.00
- 99%
- Hebei Chuanghai Biotechnology Co., Ltd
-
- 3-Ethyl-2-hydroxy-2-cyclopenten-1-one
21835-01-8
- 99%
- Hebei Chuanghai Biotechnology Co., Ltd
