| 3-Ethyl-2-hydroxy-2-cyclopenten-1-one Basic information |
| Product Name: | 3-Ethyl-2-hydroxy-2-cyclopenten-1-one |
| Synonyms: | 2-Cyclopenten-1-one, 3-ethyl-2-hydroxy-;2-Cyclopenten-1-one,3-ethyl-2-hydroxy-(7CI,8CI,9CI);3-ethyl-2-hydroxy-2-cyclopenten-1-on;3-ETHYL-HYDROXY-2-CYCLOPENTEN-1-ONE;3-ETHYL-2-HYDROXY-2-CYCLOPENTEN-1-ONE;3-ETHYL-2-CYCLPENTEN-2-OL-1-ONE;3-Ethyl-2-hydroxy-2-cyclopenten-1-one solution;3-ethyl-2-hydroxycyclopent-2-en-1-one |
| CAS: | 21835-01-8 |
| MF: | C7H10O2 |
| MW: | 126.15 |
| EINECS: | 244-606-5 |
| Product Categories: | C7 to C8;Carbonyl Compounds;Alphabetical Listings;E-F;Flavors and Fragrances;Ketones;pharmacetical |
| Mol File: | 21835-01-8.mol |
| 3-Ethyl-2-hydroxy-2-cyclopenten-1-one Chemical Properties |
| 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 |
| Fp | 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 |
| JECFA Number | 419 |
| InChIKey | JHWFWLUAUPZUCP-UHFFFAOYSA-N |
| CAS DataBase Reference | 21835-01-8(CAS DataBase Reference) |
| 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) |
| Safety Information |
| Hazard Codes | Xn,Xi |
| Risk Statements | 20/22-43 |
| Safety Statements | 26-36-36/37 |
| WGK Germany | 3 |
| HS Code | 29144000 |
| MSDS Information |
| Provider | Language |
|---|---|
| SigmaAldrich | English |
| 3-Ethyl-2-hydroxy-2-cyclopenten-1-one Usage And Synthesis |
| 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. |
| 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 |
| Raw materials | Cyclopentene-->Dimethyl adipate |
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