3,4-Dimethyl-1,2-cyclopentanedione

3,4-Dimethyl-1,2-cyclopentanedione Basic information
Product Name:3,4-Dimethyl-1,2-cyclopentanedione
Synonyms:2-Cyclopentanedione,3,4-dimethyl-1;3,4-dimethyl-2-cyclopentanedione;FEMA 3268;METHYL CORYLONE;3,4-DIMETHYL-1,2-CYCLOPENTANEDIONE 97%;3,4-dimethylcyclopentane-1,2-dione;2-hydroxy-3,4-dimethylcyclopent-2-en-1-one;3 4-DIMETHYL-1 2-CYCLOPENTADIONE 97+%
CAS:13494-06-9
MF:C7H10O2
MW:126.15
EINECS:236-810-8
Product Categories:Alphabetical Listings;C-D;API intermediates;Flavors and Fragrances
Mol File:13494-06-9.mol
3,4-Dimethyl-1,2-cyclopentanedione Structure
3,4-Dimethyl-1,2-cyclopentanedione Chemical Properties
Melting point 68-72 °C(lit.)
Boiling point 194.28°C (rough estimate)
density 1.0579 (rough estimate)
FEMA 3268 | 3,4-DIMETHYL-1,2-CYCLOPENTADIONE
refractive index 1.4690 (estimate)
storage temp. Inert atmosphere,2-8°C
solubility Chloroform (Soluble), Methanol (Slightly)
form Crystalline Powder
color Slightly yellow to light beige
Odorat 1.00 % in dipropylene glycol. sweet maple caramel sugar fenugreek licorice
Odor Typecaramellic
Water Solubility slightly soluble
JECFA Number420
LogP0.53
CAS DataBase Reference13494-06-9(CAS DataBase Reference)
NIST Chemistry Reference1,2-Cyclopentanedione, 3,4-dimethyl-(13494-06-9)
EPA Substance Registry System1,2-Cyclopentanedione, 3,4-dimethyl- (13494-06-9)
Safety Information
Safety Statements 24/25
WGK Germany 3
HS Code 29142990
MSDS Information
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3,4-Dimethyl-1,2-cyclopentanedione English
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3,4-Dimethyl-1,2-cyclopentanedione Usage And Synthesis
Chemical Propertiesslightly yellow to light beige crystalline powder
OccurrenceReported found as a constituent in coffee.
Uses3,4-Dimethyl-1,2-cyclopentanedione is a useful protective agent for food products.
PreparationBy 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 valuesDetection: 17 to 20 ppb
Taste threshold valuesTaste characteristics at 10 ppm: brown, sweet, sugary, maple and caramellic.
3,4-Dimethyl-1,2-cyclopentanedione Preparation Products And Raw materials
Cyclicdimethylpolysiloxane Dacthal Acetylacetone N,N-Dimethylformamide Poly(dimethylsiloxane) ETHANE 3,4-Dimethyl-1,2-cyclopentanedione DL-CAMPHORQUINONE Dimethyl fumarate N,N-Dimethylaniline Dimethyl sulfoxide Dimethyl disulfide Dimethyl ether N,N-Dimethylacetamide Dimethyl carbonate 1,3-Cyclopentanedione Dimethyl phthalate Dimethyl sulfate

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