2-Undecanone
- CAS No.
- 112-12-9
- Chemical Name:
- 2-Undecanone
- Synonyms
- METHYL NONYL KETONE;Undecan-2-one;FEMA 3093;METHYL N-NONYL KETONE;undecan-2-;2-Undecanon;2-UNDECANONE;Undecan-2-on;2-hendecanone;Undecanone-(2)
- CBNumber:
- CB5285835
- Molecular Formula:
- C11H22O
- Molecular Weight:
- 170.29
- MDL Number:
- MFCD00009583
- MOL File:
- 112-12-9.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Melting point | 11-13 °C(lit.) |
|---|---|
| Boiling point | 231-232 °C(lit.) |
| Density | 0.825 g/mL at 25 °C(lit.) |
| vapor density | 5.9 (vs air) |
| vapor pressure | <1 mm Hg ( 20 °C) |
| refractive index |
n |
| FEMA | 3093 | 2-UNDECANONE |
| FLAVIS Number | 07.016 | Undecan-2-one |
| Flash point | 192 °F |
| storage temp. | Store below +30°C. |
| form | Liquid |
| color | Clear colorless to light yellow |
| Odor | at 100.00 %. waxy fruity creamy fatty orris floral |
| Odor Type | fruity |
| biological source | synthetic |
| Water Solubility | INSOLUBLE |
| Merck | 14,6104 |
| JECFA Number | 296 |
| BRN | 1749573 |
| Henry's Law Constant | 1.9×10-2 mol/(m3Pa) at 25℃, Plyasunov and Shock (2001) |
| Dielectric constant | 8.4000000000000004 |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents, strong bases. |
| Major Application |
cleaning products cosmetics food and beverages personal care |
| Cosmetics Ingredients Functions | PERFUMING |
| InChI | 1S/C11H22O/c1-3-4-5-6-7-8-9-10-11(2)12/h3-10H2,1-2H3 |
| InChIKey | KYWIYKKSMDLRDC-UHFFFAOYSA-N |
| SMILES | CCCCCCCCCC(C)=O |
| LogP | 3.69 at 25℃ |
| CAS DataBase Reference | 112-12-9(CAS DataBase Reference) |
| Substances Added to Food (formerly EAFUS) | 2-UNDECANONE |
| EWG's Food Scores | 1 |
| FDA UNII | YV5DSO8CY9 |
| NIST Chemistry Reference | 2-Undecanone(112-12-9) |
| Pesticides Freedom of Information Act (FOIA) | Methyl nonyl ketone |
| EPA Substance Registry System | Methyl nonyl ketone (112-12-9) |
| UNSPSC Code | 12352115 |
| NACRES | NA.24 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS09 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H410 | |||||||||
| Precautionary statements | P273-P391-P501 | |||||||||
| Hazard Codes | N | |||||||||
| Risk Statements | 51/53-50/53 | |||||||||
| Safety Statements | 23-24/25-61-60 | |||||||||
| RIDADR | UN3082 | |||||||||
| WGK Germany | 2 | |||||||||
| RTECS | YQ2820000 | |||||||||
| TSCA | TSCA listed | |||||||||
| HazardClass | 9 | |||||||||
| PackingGroup | III | |||||||||
| HS Code | 29141990 | |||||||||
| Storage Class | 10 - Combustible liquids | |||||||||
| Hazard Classifications | Aquatic Acute 1 Aquatic Chronic 1 |
|||||||||
| Hazardous Substances Data | 112-12-9(Hazardous Substances Data) | |||||||||
| Toxicity | LD50 dermally in rabbits: >5 g/kg; LD50 orally in rats, mice: >5, 3.88 g/kg (Opdyke) | |||||||||
| REACH Registrations | Active | |||||||||
| Limited Quantities | 5.0 L (1.3 gallons) (liquid) or 5.0 kg (11 lbs) (solid) | |||||||||
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L) | |||||||||
| NFPA 704 |
|
2-Undecanone price More Price(70)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | W309311 | 2-Undecanone natural, FCC, FG | 112-12-9 | 1 each | $65.1 | 2026-04-30 | Buy |
| Sigma-Aldrich | W309303 | 2-Undecanone ≥98%, FCC, FG | 112-12-9 | 1 each | $58 | 2026-04-30 | Buy |
| Sigma-Aldrich | W309311 | 2-Undecanone natural, FCC, FG | 112-12-9 | 100g | $208 | 2026-04-30 | Buy |
| Sigma-Aldrich | W309303 | 2-Undecanone ≥98%, FCC, FG | 112-12-9 | 250g | $81.3 | 2026-04-30 | Buy |
| Sigma-Aldrich | W309311 | 2-Undecanone natural, FCC, FG | 112-12-9 | 1kg | $1030 | 2026-04-30 | Buy |
2-Undecanone Chemical Properties, Uses, Production
Chemical Properties
2-undecanone, also known as methyl nonyl ketone, is a colorless to slightly yellow liquid and has a characteristic rue odor with a sweet flavor reminiscent of peach (on dilution). It naturally exists in Houttuynia cordata, bananas, strawberries, cloves, ginger and Rutaceae plants. The FEMA number is 3093, the FDA number is 172.515, and the CoE number is 150. methyl nonyl ketone is the active ingredient of Houttuynia cordata, mainly used in the production of medicines and fragrances, and is safer and more effective than DEET for mosquito repellents.
Physical properties
Methyl nonyl ketone (MNK) is a clear mobile liquid, with a strong characteristic smell at room temperature that presents a vapour pressure of 11.8 Pascals at 20° C. It has a very low solubility in water and high solubility in organic solvents such as n-heptane, p-xylene, 1,2-dichloroethane, methanol, acetone and ethyl acetate. MNK is not considered highly flammable or explosive or oxidizing.
Occurrence
Originally reported found in the essential oils of Ruta graveolens; subsequently was identified in the essential oils of Citrus limetta Risso., Fagara xanthoxyloides Lamm. and Litsea odorifera Val. (leaves); a method for the determination of methyl nonyl ketone in various rue species (Ruta montana, Ruta bracteosa) was devised; it is also present in the essential oils of Jaborandi (leaves), Hottuynia cordata, Phellodendron anaurense, Schizandar nigra Maxim., and in coconut and palm oils; also identified as the main constituent of the essential oil of Boronia ledifolia Gai; a 92% content level was reported in the essential oil of Ruta chalepensis. Also reported found in rabbiteye, blueberry, feijoa fruit, feijoa peel, peach, raspberry, fresh black berry, heated blackberry, strawberry jam, guava, allium, cloves, raw asparagus, shallot, roasted onion, ginger, Curcuma aeruginosa Roxb., Curcuma heyneana Val., banana, grapefruit, currants, peach, asparagus, shallot, onion, leek, chive, peas, potato, clove, ginger, pepper, many cheeses, wheaten bread, butter, milk, cream, yogurt, milk powder, goat and sheep milk, caviar, raw and smoked fatty fish, roast chicken, cooked beef, beef, chicken and pork fat, hop oil, beer, cognac, rum, sparkling wine, coffee, tea, roasted filberts and peanuts, coconut meat, milk and oil, passion fruit, mushroom, wild marjoram, starfruit, Brazil nut, cardamom, rice, buckwheat, corn oil, wort, elder flower, shrimp, crayfish, clam, maté and mastic gum leaf and fruit oil.
Uses
In the compounding of some synthetic essential oils. As fragrance additive in soaps, detergents, creams, lotions, and perfume. As dog and cat repellant.
Uses
2-Undecanone may be used as an analytical reference standard for the quantification of the analyte in milk samples and Houttuynia cordata Thunb using gas chromatography (GC) technique.
Definition
ChEBI: 2-Undecanone is a dialkyl ketone with methyl and nonyl as the two alkyl groups. It has a role as a rodenticide and a plant metabolite. It is a dialkyl ketone and a methyl ketone.
Preparation
Can be isolated from natural oils by fractional distillation; also by dry distillation of calcium acetate and calcium caprylate, or by boiling octylacetoacetic acid ethyl ester with and alcoholic KOH solution.
Aroma threshold values
Detection: 7 to 82 ppb
Taste threshold values
Taste characteristics at 30 ppm: waxy and fruity with creamy cheese notes
Synthesis Reference(s)
Tetrahedron Letters, 23, p. 3411, 1982 DOI: 10.1016/S0040-4039(00)87629-7
The Journal of Organic Chemistry, 64, p. 2433, 1999 DOI: 10.1021/JO982239S
General Description
2-Undecanone is a naturally available nontoxic insect repellant, introduced as an alternative to insect repellants containing N,N-diethyl-meta-toluamide. It is isolated from the trichomes of wild tomatoes 2-Undecanone is also a volatile constituent, identified in milk and Houttuynia cordata Thunb(HCT), a traditional Chinese medicine.
Flammability and Explosibility
Not classified
Biochem/physiol Actions
Taste: @ 10 ppm.
Mechanism of action
Volatile substance that confuses the animals sense of smell discouraging them from visting the treated area
Safety Profile
Moderately toxic by ingestion. Combustible when exposed to heat or flame; can react with oxidizing materials. To fight fLt-e, use CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. See also KETONES.
Synthesis
2-Undecanone's three synthesis methods is as follows:1) by oxidation of Undecanol-2.2) from Decanoic acid and Acetic acid, heated over Thorium oxide to 450℃.3) The isolation from Rue oil is of no commercial importance.
Pesticide Type
Repellent; Sterilant
2-Undecanone Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| shanghai hehua chemical co.,ltd | 15121167815 | bangge121@sina.com | China | 260 | 58 |
| Wuhan kemike Biomedical Technology Co., Ltd | 027-13163388153 13163388153 | yeqiu416@163.com | China | 8787 | 58 |
| Taian Jiayue Bio-chemical Co. LTD | 15318151873 | 285424065@qq.com | China | 4541 | 58 |
| Hubei Jusheng Technology Co.,Ltd | 027-59599241 18871490274 | 1400878000@qq.com | China | 9506 | 58 |
| Jiangxi yuanshangcao flavor Co., Ltd. | 0796-828-2352 18979604038 | 1182634205@qq.com | China | 372 | 58 |
| Jishui County Yikang Natural Flavor Oil Refinery | 0796-8128936 19070600085 | 201999698@qq.com;1708484260@qq.com | China | 480 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Beijing Donghualituo Techonlogy Development Co.,Ltd. | 010-88425576 | sales@dhltchem.com | China | 793 | 59 |
| INTATRADE GmbH | +49 3493/605464 | sales@intatrade.de | Germany | 3563 | 66 |
| future industrial shanghai co., ltd | 400-0066400 13621662912 | sales@jonln.com | China | 1989 | 65 |
View Latest Price from 2-Undecanone manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-09-02 | 2-Undecanone
112-12-9
|
$5.00-6.00 | 1kg | 99% | Henan Fengda Chemical Co., Ltd | ||
 |
2026-06-30 | 2-Undecanone
112-12-9
|
1kg | 98% | 1000kg | Shaanxi Dideu New Materials Co. Ltd | ||
 |
2026-05-28 | 2-Undecanone
112-12-9
|
$2.00-5.00 | 1KG | 99% | 10000kg | Hebei Chuanghai Biotechnology Co,.LTD |
-
- 2-Undecanone
112-12-9
- $5.00-6.00
- 99%
- Henan Fengda Chemical Co., Ltd
-
- 2-Undecanone
112-12-9
- 98%
- Shaanxi Dideu New Materials Co. Ltd
-
- 2-Undecanone
112-12-9
- $2.00-5.00
- 99%
- Hebei Chuanghai Biotechnology Co,.LTD
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