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Synthetic aroma chemicals

2-Undecanone

Also known as Undecan-2-one, Methyl nonyl ketone, 2-Hendecanone

CAS 112-12-9Formula C11H22OMolar mass 170.30 g/molEC 203-937-5
GHS signal word: Warning. Pictograms: Hazardous to the environment 34 suppliers listed
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2-Undecanone chemical structure, C11H22O, CAS 112-12-9
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Oily liquid
Melting point
15 °C
Boiling point
231.5 °C
Density
0.8260 to 0.8263 at 20 °C/4 °C
Flash point
89 °C
HS code
291419
Category
Synthetic aroma chemicals
Illustrative photo, closed amber glass reagent bottles on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is 2-Undecanone?

Plain description, key identifiers and synonyms

Undecan-2-one 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.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
undecan-2-one
CAS number
112-12-9 CAS number cross-checkedOther or deprecated CAS: 53452-70-3
EC number
203-937-5
Molecular formula
C11H22O
UNII
YV5DSO8CY9
MDL number
MFCD00009583
INCI name
METHYL NONYL KETONE
InChIKey
KYWIYKKSMDLRDC-UHFFFAOYSA-N
InChI
InChI=1S/C11H22O/c1-3-4-5-6-7-8-9-10-11(2)12/h3-10H2,1-2H3
SMILES (canonical and isomeric)
CCCCCCCCCC(=O)C

Synonyms

  • Undecan-2-one
  • Methyl nonyl ketone
  • 2-Hendecanone
  • Rue ketone
  • Methyl n-nonyl ketone
  • Ketone, methyl nonyl
  • Nonyl methyl ketone
  • MGK Dog and Cat Repellent
  • Undecanone
  • 2-Oxoundecane
  • Methylnonylketone
  • Undecanone-(2)
  • Methyl-n-nonylketone
  • Mgk dog & cat repellent
  • 2-Undecanone (natural)
  • BioUD
  • Luparone
  • Enodyl
  • methyl n-nonylketone
  • MGK dog AMP MNK
  • 2-Undecanone, 99%
  • Undecanone, 2-
  • Mostique egx 101
  • Sodium Caprylate EP Impurity I
  • 2-Undecanone, analytical standard
Show all 28 synonyms
  • 2-Undecanone, natural, FCC, FG
  • 2-Undecanone, >=98%, FCC, FG
  • 2-Undecanone Solution in Acetone, 1000ug/mL

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
Oily liquidexp.
Odour
Strong odorexp.
Melting point
15 °Cexp.
Boiling point
231.5 °Cexp.
Density
0.8260 to 0.8263 at 20 °C/4 °Cexp.
Flash point
89 °Cexp.
Solubility
Insoluble in water. Soluble in ethanol, ether, acetone, benzene, carbon tetrachloride, chloroform.exp.
Vapour pressure
4.1 × 10⁻² mm Hgexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
170.30 g/molcalc.
Exact mass
170.1671 Dacalc.
LogP (octanol/water)
3.72calc.
Topological polar surface area
17.07 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
8calc.
Heavy atoms
12calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.91calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS09: Hazardous to the environment
Hazardous to the environment
210NFPA 704 rating

Hazard statements

  • H400Very toxic to aquatic life.
Precautionary statements (3)
  • P273Avoid release to the environment.
  • P391Collect spillage.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

2-Undecanone suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 34 suppliers
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Where suppliers are based

34 suppliers in 7 countries

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2-Undecanone price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Used as a solvent in the production of vinyl resins, nitrocellulose, and synthetic rubber.

Flavoring.

Dog and cat repellent/training aid and iris borer deterrent.

Perfumery, flavoring, animal repellent.

Cosmetic ingredient, INCI name METHYL NONYL KETONE(perfuming)

Pharmacological actions

  • Insect Repellents

Roles

  • eukaryotic metabolite
  • metabolite
  • pesticide
  • plant metabolite
  • rodenticide

Functional uses

  • Flavouring and nutrient
  • Fragrance

Cosmetic functions

  • Perfuming

How it is made

Oil of rue, also made synthetically.

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code 2-Undecanone is traded under.

HS 2914.19Indicative HS code

Acyclic ketones without other oxygen function, other

World exports in 2024
$264M
+1.7% vs 2023, imports $308M
2019 to 2024
Top exporters
  1. China27.1%
  2. United States27.0%
  3. Germany10.5%
Top importers
  1. China22.8%
  2. United States13.0%
  3. India * partner reported10.7%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for 2-Undecanone is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 2-Undecanone, based on the data on this page

What is 2-Undecanone?

Undecan-2-one 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.

What is the CAS number of 2-Undecanone?

The CAS registry number of 2-Undecanone is 112-12-9. Other or deprecated CAS numbers: 53452-70-3.

What is the molecular formula and weight of 2-Undecanone?

The molecular formula of 2-Undecanone is C11H22O and its molar mass is 170.30 g/mol.

What is 2-Undecanone used for?

Used as a solvent in the production of vinyl resins, nitrocellulose, and synthetic rubber. Flavoring. Dog and cat repellent/training aid and iris borer deterrent. Perfumery, flavoring, animal repellent.

Is 2-Undecanone hazardous?

2-Undecanone carries the GHS signal word "Warning". Main hazards: very toxic to aquatic life. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 2-Undecanone?

2-Undecanone is usually classified under HS code 291419 (Acyclic ketones without other oxygen function, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 2-Undecanone?

CompoundList lists 34 suppliers of 2-Undecanone in China, United States, India, Egypt and 3 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy 2-Undecanone in India?

4 suppliers in India list 2-Undecanone on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of 2-Undecanone?

Suppliers quote 2-Undecanone on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle 2-Undecanone

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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