ChemicalBook > CAS DataBase List > 3-Ethyl-2-hydroxy-2-cyclopenten-1-one

3-Ethyl-2-hydroxy-2-cyclopenten-1-one

Product Name
3-Ethyl-2-hydroxy-2-cyclopenten-1-one
CAS No.
21835-01-8
Chemical Name
3-Ethyl-2-hydroxy-2-cyclopenten-1-one
Synonyms
FEMA 3152;Ethyl Cyclopentenlone;ETHYL CYCLOPENTENOLONE;Ethyl Eyelopentenolone;ISOVALERIC ACID 99+% FCC;Ethyl cyclopentenol ketone;ETHYL CYCLOPENTENOLONE PURE;Ethyl Cyclopentenolone (50%);3-ETHYL-2-CYCLPENTEN-2-OL-1-ONE;ETHYL CYCLOPENTENOLONE IN 50% P.G.
CBNumber
CB6199223
Molecular Formula
C7H10O2
Formula Weight
126.15
MOL File
21835-01-8.mol
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3-Ethyl-2-hydroxy-2-cyclopenten-1-one Property

Melting point:
39.0 to 43.0 °C
Boiling point:
75°C/0.3mmHg(lit.)
Density 
1.066 at 25 °C
refractive index 
n20/D 1.476
FEMA 
3152 | 3-ETHYL-2-HYDROXY-2-CYCLOPENTEN-1-ONE
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
JECFA Number
419
InChIKey
JHWFWLUAUPZUCP-UHFFFAOYSA-N
LogP
0.83
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)
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Safety

Hazard Codes 
Xn,Xi
Risk Statements 
20/22-43
Safety Statements 
26-36-36/37
WGK Germany 
3
HS Code 
29144000
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H317May cause an allergic skin reaction

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P272Contaminated work clothing should not be allowed out of the workplace.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P333+P313IF SKIN irritation or rash occurs: Get medical advice/attention.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
W315230
Product name
Ethylcyclopentenolone
Purity
natural, 97%, FG
Packaging
sample-k
Price
$87.7
Updated
2024/03/01
Sigma-Aldrich
Product number
W315230
Product name
Ethylcyclopentenolone
Purity
natural, 97%, FG
Packaging
100g
Price
$498
Updated
2024/03/01
Sigma-Aldrich
Product number
W315230
Product name
Ethylcyclopentenolone
Purity
natural, 97%, FG
Packaging
500g
Price
$2090
Updated
2024/03/01
Sigma-Aldrich
Product number
W315230
Product name
Ethylcyclopentenolone
Purity
natural, 97%, FG
Packaging
1kg
Price
$3560
Updated
2024/03/01
Sigma-Aldrich
Product number
301744
Product name
3-Ethyl-2-hydroxy-2-cyclopenten-1-one solution
Purity
50 wt. % in propylene glycol
Packaging
25g
Price
$106
Updated
2023/01/07
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3-Ethyl-2-hydroxy-2-cyclopenten-1-one Chemical Properties,Usage,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.

Preparation

From 5-methyl-3,5-dicarbethoxy-2-cyclopen-ten-2-ol-one and phosphoric acid; by a patented process; also from dimethyl adipate.

Definition

ChEBI: 3-Ethyl-2-hydroxycyclopent-2-en-1-one is a cyclic ketone.

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

Dimethyl adipate Cyclopentene

Preparation Products

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3-Ethyl-2-hydroxy-2-cyclopenten-1-one Suppliers

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View Lastest Price from 3-Ethyl-2-hydroxy-2-cyclopenten-1-one manufacturers

Hebei Zhuanglai Chemical Trading Co.,Ltd
Product
3-Ethyl-2-hydroxy-2-cyclopenten-1-one 21835-01-8
Price
US $120.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
20ton
Release date
2024-05-16
Hebei Weibang Biotechnology Co., Ltd
Product
3-Ethyl-2-hydroxy-2-cyclopenten-1-one 21835-01-8
Price
US $0.00-0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
500000kg
Release date
2024-11-04
JINING XINHE CHEMICAL CO., LTD
Product
3-Ethyl-2-hydroxy-2-cyclopenten-1-one 21835-01-8
Price
US $0.00-0.00/kg
Min. Order
1kg
Purity
98%
Supply Ability
10ton
Release date
2024-07-18

21835-01-8, 3-Ethyl-2-hydroxy-2-cyclopenten-1-oneRelated Search:

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  • Organic Building Blocks
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