3,4-dimethyl 2-hydroxy-2-cyclopenten-1-one
Synonym(s):Caramel pentadione
- CAS NO.：13494-06-9
- Empirical Formula: C7H10O2
- Molecular Weight: 126.15
- MDL number: MFCD00143063
- EINECS: 236-810-8
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-05-24 15:44:31
What is 3,4-dimethyl 2-hydroxy-2-cyclopenten-1-one?
Chemical properties
slightly yellow to light beige crystalline powder
Occurrence
Reported found as a constituent in coffee.
The Uses of 3,4-dimethyl 2-hydroxy-2-cyclopenten-1-one
3,4-Dimethyl-1,2-cyclopentanedione is a useful protective agent for food products.
Preparation
By alkylation of 3,5-dicarbetoxy-4-methyl-cyclopentane-1,2-dione followed by hydrolysis and decarboxylation of the resulting 3,5-dicarbetoxy-3,4-dimethyl-cyclopentane-1,2-di-one
Aroma threshold values
Detection: 17 to 20 ppb
Taste threshold values
Taste characteristics at 10 ppm: brown, sweet, sugary, maple and caramellic.
Properties of 3,4-dimethyl 2-hydroxy-2-cyclopenten-1-one
| Melting point: | 68-72 °C(lit.) |
| Boiling point: | 194.28°C (rough estimate) |
| Density | 1.0579 (rough estimate) |
| refractive index | 1.4690 (estimate) |
| FEMA | 3268 | 3,4-DIMETHYL-1,2-CYCLOPENTADIONE |
| storage temp. | Inert atmosphere,2-8°C |
| solubility | Chloroform (Soluble), Methanol (Slightly) |
| form | Crystalline Powder |
| color | Slightly yellow to light beige |
| Odor | at 1.00 % in dipropylene glycol. sweet maple caramel sugar fenugreek licorice |
| Water Solubility | slightly soluble |
| JECFA Number | 420 |
| CAS DataBase Reference | 13494-06-9(CAS DataBase Reference) |
| NIST Chemistry Reference | 1,2-Cyclopentanedione, 3,4-dimethyl-(13494-06-9) |
| EPA Substance Registry System | 1,2-Cyclopentanedione, 3,4-dimethyl- (13494-06-9) |
Safety information for 3,4-dimethyl 2-hydroxy-2-cyclopenten-1-one
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 3,4-dimethyl 2-hydroxy-2-cyclopenten-1-one
New Products
3-Pyridineacrylic acid 3-Bromo-4-fluorophenol N-Boc-Ethylenediamine cis-[2-(2,4-Dichlorophenyl)-2-(1H-imidazol-1-ylmethyl)-1,3-dioxolan-4-yl]methyl-4-methylbenzenesulphonate 4-Aminotetrahydropyran hydrochloride 4,5-Dibromopyridazin-3-one N-Benzyl-3-hydroxypiperidine 2-Methyl-4-nitrobenzoic acid 2-(4-bromophenyl)-2-methylpropanoic acid 4-Acetyl-2-methylbenzoicacid Acetyl-meldrum's acid Ethyl-4-Pyrazole carboxylate 2,6-Pyridinedimethanol 5,7-Dichloro-3H-Imidazo[4,5-B]Pyridine 5-Bromo-2-Methoxy-4-Methyl-3-Nitropyridine 2-Fluoro-5-Iodopyridine 2-Fluoro-5-Methylpyridine 2-Chloro-3-Bromo-5-Amiopyridine METHYL-4-(BUTYRYLAMINO)3-METHYL-5-NITROBENZOATE TRANS-CYCLOBUTANE-1,2- DICARBOXYLIC ACID 5-Nitro indazole R-(-)-5-(2-AMINO-PROPYL)-2-METHOXY-BENZENESULFONAMIDE 1,3-cyclohexanedione 4-AminophenaethylalcholRelated products of tetrahydrofuran
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