2-Hydroxy-3-methylcyclopent-2-enon

Bezeichnung:2-Hydroxy-3-methylcyclopent-2-enon

CAS-Nr80-71-7

Englisch Name:Methyl cyclopentenolone

CBNumberCB1124237

SummenformelC6H8O2

Molgewicht112.13

MOL-Datei80-71-7.mol

Synonyma

2-Hydroxy-3-methylcyclopent-2-enon

2-Hydroxy-3-methylcyclopent-2-enon physikalisch-chemischer Eigenschaften

Schmelzpunkt	104-108°C
Siedepunkt	170.05°C (rough estimate)
Dichte	1.0795 (rough estimate)
Dampfdruck	2.1hPa at 20℃
FEMA	2700 \| METHYLCYCLOPENTENOLONE
Brechungsindex	1.4532 (estimate)
Flammpunkt	100°C
storage temp.	Store at +2°C to +8°C.
Löslichkeit	Chloroform (Slightly), Methanol (Slightly)
pka	9.21±0.20(Predicted)
Farbe	White crystalline powder or fine crystals
Geruch (Odor)	at 1.00 % in dipropylene glycol. caramel maple syrup
Geruchsart	caramellic
JECFA Number	418
LogP	0.4 at 25℃
CAS Datenbank	80-71-7(CAS DataBase Reference)
NIST chemische Informationen	2-Cyclopenten-1-one, 2-hydroxy-3-methyl-(80-71-7)
EPA chemische Informationen	Maple lactone (80-71-7)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	36/37/38-43
S-Sätze:	26-36/37-24/25-22
WGK Germany	3
RTECS-Nr.	GY7298000
HS Code	29144090

Gefahreninformationscode (GHS)

Methyl cyclopentenolone Chemische Eigenschaften,Einsatz,Produktion Methoden

Chemische Eigenschaften
Methyl cyclopentenolone occurs in beechwood tar and has a caramel-like (burnt sugar) odor. It has been identified as a flavor component in food. Crystals of the compound usually contain 1 mol of water. Synthetic routes of production are of limited importance in comparison with isolation from beechwood tar. Homologs of cyclotene such as 3-ethyl-2-hydroxy-2-cyclopenten-1-one, C₇H₁₀O₂, Mr 126.16, 2-hydroxy-3,4-dimethyl-2-cyclopenten-1-one, C₇H₁₀O₂, Mr 126.16, and 2-hydroxy-3,5-dimethyl-2-cyclopenten-1-one, C₇H₁₀O₂, Mr 126.16, are also used as flavor ingredients and have similar caramel-like properties.
Cyclotene and its homologs are frequently used in flavor compositions for its caramel note, for example, in beverages and in confectionery.
Chemische Eigenschaften
Off-white solid
Occurrence
Reported to be found during the dry distillation of wood and in the corresponding tar oil. It has also been identified in fenugreek (FenaroWs Handbook of Flavor Ingredients, 1975).
Verwenden
Methyl Cyclopentenolone is a flavoring agent that is a white crys- talline powder. it has a nutty odor suggesting a maple-licorice aroma when diluted. it is soluble in alcohol and propylene glycol, slightly soluble in most fixed oils, and sparingly soluble in water. it is obtained by synthesis. it is also termed 3-methyl-cyclopentane-1,2-dione.
Verwenden
Methyl cyclopentenolone may be used as an analytical reference standard for the quantification of the analyte in commercial products using different chromatography techniques.
synthetische
By ketonic hydrolysis of the corresponding dicarboxylic ester (Arctander, 1969)
Toxicity evaluation
The acute oral LD₅₀ value in guinea-pigs was reported as 1.4 g/kg (Dow Chemical Company, 1953) and that in rats as > 1.85 g/kg, while the acute dermal LD₅₀ value in guinea-pigs exceeded 2 g/kg (Moreno, 1976). Methylcyclopentenolone was lethal to mice and rats at ip doses of 0.5-1 g/kg (Shugaev, 1959), and at a concentration of 7 χ 10^-4 m was toxic to cultured human leucocytes (Withers, 1966).
Allgemeine Beschreibung
Methyl cyclopentenolone is one of the flavor compounds of maple syrup, coffee oil and wood smoke. It is reported to be one the key aroma compounds in Wasanbon sugar, contributing to the maple-like flavor. Methyl cyclopentenolone is also one of the major volatile compound formed during the thermal degradation of glucose.

Methyl cyclopentenolone Upstream-Materialien And Downstream Produkte

2-Hydroxy-3-methylcyclopent-2-enon Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

80-71-7, Methyl cyclopentenolone Verwandte Suche:

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