2,6,6-Trimethyl-2-cyclohexene-1,4-dione

Product Name: 2,6,6-Trimethyl-2-cyclohexene-1,4-dione
CAS No.: 1125-21-9
Chemical Name: 2,6,6-Trimethyl-2-cyclohexene-1,4-dione
Synonyms: KETOISOPHORONE;4-OXOISOPHORONE;4-KETOISOPHORONE;OXOISOPHORONE;2,6,6-TRIMETHYLCYCLOHEX-2-ENE-1,4-DIONE;Oxophorone;2,2,6-trimethyl-2-cyclohexene-1,4-dione (cetoisophorone);FEMA 3421;Oxopholone;4-OXOISOPHORON
CBNumber: CB7701362
Molecular Formula: C9H12O2
Formula Weight: 152.19
MOL File: 1125-21-9.mol

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2,6,6-Trimethyl-2-cyclohexene-1,4-dione Property

Melting point:: 26-28 °C (lit.)
Boiling point:: 222 °C (lit.) 92-94 °C/11 mmHg (lit.)
Density: 1.03
refractive index: n20/D 1.491(lit.)
FEMA: 3421 | 2,6,6-TRIMETHYLCYCLOHEX-2-ENE-1,4-DIONE
Flash point:: 201 °F
storage temp.: Sealed in dry,2-8°C
solubility: Chloroform (Slightly), Ethyl Acetate (Slightly)
form: Liquid
color: Pale Yellow to Yellow
Odor: at 1.00 % in dipropylene glycol. musty woody sweet tea tobacco leaf
Odor Type: musty
biological source: synthetic
JECFA Number: 1857
BRN: 2207030
LogP: 0.76
CAS DataBase Reference: 1125-21-9(CAS DataBase Reference)
NIST Chemistry Reference: 2,6,6-Trimethyl-2-cyclohexene-1,4-dione(1125-21-9)
EPA Substance Registry System: 2-Cyclohexene-1,4-dione, 2,6,6-trimethyl- (1125-21-9)

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Safety

Hazard Codes: Xn,Xi
Risk Statements: 22-43-36/37/38
Safety Statements: 26-36/37-37/39-24/25
RIDADR: UN 2811 6.1/PG 3
WGK Germany: 3
HS Code: 29142900

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H317May cause an allergic skin reaction

Precautionary statements

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

P302+P352IF ON SKIN: wash with plenty of soap and water.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: W342106
Product name: 4-Oxoisophorone
Purity: ≥98%, FG
Packaging: 1 unit
Price: $56.3
Updated: 2025/07/31

Sigma-Aldrich

Product number: W342106
Product name: 4-Oxoisophorone
Purity: ≥98%, FG
Packaging: 1 unit
Price: $56.3
Updated: 2025/07/31

Sigma-Aldrich

Product number: W342106
Product name: 4-Oxoisophorone
Purity: ≥98%, FG
Packaging: 100g
Price: $83.5
Updated: 2025/07/31

Sigma-Aldrich

Product number: W342106
Product name: 4-Oxoisophorone
Purity: ≥98%, FG
Packaging: 1kg
Price: $356
Updated: 2025/07/31

Sigma-Aldrich

Product number: W342106
Product name: 4-Oxoisophorone
Purity: ≥98%, FG
Packaging: 5kg
Price: $1520
Updated: 2025/07/31

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2,6,6-Trimethyl-2-cyclohexene-1,4-dione Chemical Properties,Usage,Production

Chemical Properties

clear yellow to orange liquid or low melting solid

Chemical Properties

2,6,6,-Trimethylcyclohex-2-ene-1,4-dione has a woody, musty sweet aroma.

Occurrence

Reported found among the volatile components in saffron and in cigarette smoke. Also reported found in saffron, cognac, black tea, green tea, microbial fermented tea, lemon balm, cooked shrimp, roasted shrimp, corn oil and lamb’s lettuce.

Uses

4-Oxoisophorone is one of the major components of saffron (Crocus sativus L.) and also found to be a product of degradation of carotenoids in paprika, tomato and marigold oleoresins.

Definition

ChEBI: 2,6,6-Trimethyl-2-cyclohexene-1,4-dione is a member of cyclohexenones.

General Description

2,6,6-Trimethyl-2-cyclohexene-1,4-dione is also known as 4-ketoisophorone and is the major component of saffron spice. It is a cyclic olefin and was reported as a product of the thermal degradation of β-carotene in aqueous suspension.

2,6,6-Trimethyl-2-cyclohexene-1,4-dione Preparation Products And Raw materials

Raw materials

Preparation Products

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2,6,6-Trimethyl-2-cyclohexene-1,4-dione Suppliers

Americas 2 Belgium 2 China 263 Europe 2 France 1 Germany 6 India 2 Japan 2 Switzerland 2 The Netherlands 1 United Kingdom 6 United States 51 Global 341

J & K SCIENTIFIC LTD.

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View Lastest Price from 2,6,6-Trimethyl-2-cyclohexene-1,4-dione manufacturers

Shaanxi Dideu New Materials Co. Ltd

Product: 2,6,6-Trimethyl-2-cyclohexene-1,4-dione 1125-21-9
Price: US $0.00-0.00/KG
Min. Order: 1KG
Purity: 98.0%
Supply Ability: 10000KGS
Release date: 2025-06-26

Hebei Chuanghai Biotechnology Co., Ltd

Product: 2,6,6-Trimethyl-2-cyclohexene-1,4-dione 1125-21-9
Price: US $10.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 5tons
Release date: 2024-11-29

Hebei Zhuanglai Chemical Trading Co.,Ltd

Product: 4-Ketoisophorone 1125-21-9
Price: US $120.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 20ton
Release date: 2024-05-15

1125-21-9, 2,6,6-Trimethyl-2-cyclohexene-1,4-dioneRelated Search:

Damascenone Norandrostenedione 4'-(Trifluoromethyl)acetophenone 2-Cyclohexen-1-one Acetone oxime Cyclohexene Trimethyl borate Isophorone 3,5-Dimethyl-2-cyclohexen-1-one 2-ETHYLFENCHOL 2-ETHYLFENCHOL 2-METHYL-2-CYCLOHEXEN-1-ONE 2,5-HEPTANEDIONE 2-Cyclohexene-1,4-dione 2,6,6-Trimethyl-2-cyclohexene-1,4-dione 2-Methoxy-3,5,5-trimethyl-2-cyclohexene-1,4-dione (6E)-6-(2H-1-Benzopyran-2-ylidene)-5-methoxy-2,2,4-trimethyl-4-cyclohexene-1,3-dione

2,2,6-trimethyl-2-cyclohexene-1,4-dione (cetoisophorone)

2,2,6-trimethylcyclohex-2-en-1,4-dione (4-oxo-isophorone)

2,6,6-Trimethy-2-cyclohexene-1,4-dione (4-oxoisophorone)

4-dione,2,6,6-trimethyl-2-Cyclohexene-1

KETOISOPHORONE

FEMA 3421

4-OXOISOPHORON

4-OXOISOPHORONE

4-KETOISOPHORONE

2-ETHYLFENCHOL 97+% FCC

2,6,6-Trimethyl-2-cyclohexe

4-ketoisophotone

2,6,6-TRIMETHYL-2-CYCLOHEXENE-1,4-DIONE 98+%

2,6,6-TRIMETHYLCYCLOHEX-2-ENE-1,4-DIONE

2,6,6-TRIMETHYL-2-CYCLOHEXEN-1,4-DIONE

2,6,6-TRIMETHYL-2-CYCLOHEXENE-1,4-DIONE

OXOISOPHORONE

2,6,6-Trimethyl-2-cyclohexene-1,4-dione, 4-Oxoisophorone, Ketoisophorone

6-Trimethyl-2-cyclohexene-1

2,6,6-trimethyl-2-cyclohexene-4-dione

2,6,6-trimethylcyclohex-

4-Oxoisophorone, Ketoisophorone

Oxopholone

6-Oxoisophorone

Oxophorone

2,6,6-TriMethyl-2-cyclohexene-1,4-dione 98%

4-Oxoisophorone 2,6,6-Trimethyl-2-cyclohexen-1,4-dione

2,6,6-TriMethyl-2-clclohexen-1,4-dione

3,5,5-TriMethyl-2-clclohexen-1,4-dione

2,6,6-trimethylcyclohex-2-ene

2-Cyclohexen-1,4-dione, 2,6,6-trimethyl

2-Cyclohexene-1,4-dione, 2,6,6-trimethyl-

3,5,5-trimethyl-2-cyclohexene-1,4-dione

3,5,5-Trimethylcyclohex-2-en-1,4-dione

3,5,5-trimethylcyclohex-2-ene-1,4-dione

4-Ketoisophorone&gt

2,6,6-Trimethyl-2-cyclohexene-1,4-dione USP/EP/BP

TIANFU-CHEM -2,6,6-Trimethyl-2-cyclohexene-1,4-dione

2,6,6-Trimethyl-2-cyclohexene

2,6,6-Trimethylcycohex-2-ene-1,4-dione

Ketone isophorone

Tea Flavone

Venlafaxine Impurity 1 Hydrochloride（Venlafaxine EP Impurity A Hydrochloride）

Ketoisophorone, 10 mM in DMSO

3,5,5-Trimethyl-2-cyclohexen-1,4-dione

Dihydroterpineol(95%,97%andabove)

Tea aroma ketone

Theaketone

1125-21-9

5-21-9

Ketones

Organic Building Blocks

C9

Carbonyl Compounds

Building Blocks

Inhibitors

ketone Flavor