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Emollients

Undecane

Also known as n-Undecane, Hendecane, n-Hendecane

CAS 1120-21-4Formula C11H24Molar mass 156.31 g/molEC 214-300-6
GHS signal word: Danger. Pictograms: Serious health hazard 23 suppliers listed
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Undecane chemical structure, C11H24, CAS 1120-21-4
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless liquid
Melting point
-25.5 °C
Boiling point
195.9 °C
Density
0.7402 g/cm³ at 20 °C
Flash point
62 °C
HS code
290110
Category
Emollients
UN number
UN 2330
Illustrative photo, 200 litre blue HDPE drums of liquid in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Undecane?

Plain description, key identifiers and synonyms

Undecane is a straight-chain alkane with 11 carbon atoms.

Undecane is a liquid alkane hydrocarbon with the chemical formula CH₃(CH₂)₉CH₃.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
undecane
CAS number
1120-21-4 CAS number cross-checkedOther or deprecated CAS: 61193-21-3
EC number
214-300-6
Molecular formula
C11H24
UNII
JV0QT00NUE
MDL number
MFCD00008959
INCI name
UNDECANE
InChIKey
RSJKGSCJYJTIGS-UHFFFAOYSA-N
InChI
InChI=1S/C11H24/c1-3-5-7-9-11-10-8-6-4-2/h3-11H2,1-2H3
SMILES (canonical and isomeric)
CCCCCCCCCCC

Synonyms

  • n-Undecane
  • Hendecane
  • n-Hendecane
  • Decane, methyl-
  • Undecane, >=99%
  • n-Undecane, Hendecane
  • undecan
  • Hendekan
  • Undekan
  • Undecane, 99%
  • Undecane [UN2330] [Flammable liquid]
  • Undecane, n-
  • Undecane, analytical standard
  • 4-01-00-00487 (Beilstein Handbook Reference)
  • QSPL 058
  • n-C11H24
  • CH3-[CH2]9-CH3
  • UN 2330

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
Colorless liquidexp.
Odour
Faint odorexp.
Melting point
-25.5 °Cexp.
Boiling point
195.9 °Cexp.
Density
0.7402 g/cm³ at 20 °Cexp.
Flash point
62 °Cexp.
Solubility
In water, 0.014 mg/L at 25 deg (critical evaluation of all available data)exp.
Vapour pressure
0.412 mm Hg at 25 °Cexp.

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
156.31 g/molcalc.
Exact mass
156.1878 Dacalc.
LogP (octanol/water)
4.54calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
8calc.
Heavy atoms
11calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
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
Danger
GHS08: Serious health hazard
Serious health hazard
210NFPA 704 rating

Hazard statements

  • H304May be fatal if swallowed and enters airways.
Precautionary statements (4)
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P331Do not induce vomiting.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 2330
Transport hazard class
3
Packing group
III

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

Undecane suppliers

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

All 23 suppliers
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Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

23 suppliers in 6 countries

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Undecane 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

Petroleum research, organic synthesis, distillation chaser.

Component of gasoline.

Chemical intermediate for chlorinated paraffins (C10-C30 n-paraffins), linear alkylbenzenes (C10-C14 n-paraffins), primary detergent alcohols-C11-C14 paraffins, feedstock for citric acid production by fermentation (as mixture), solvent, especially for printing inks and degreasing applications, chemical intermediate for linear secondary alcohols (former use), chemical intermediate, e.g., for random internal olefins and sulfonates.

Industrial uses: Intermediate, Fuel, Other, Lubricating agent.

Consumer uses: Lubricating agent.

Cosmetic ingredient, INCI name UNDECANE(skin conditioning - emollient, skin conditioning)

Functional uses

  • Fragrance
  • Softener and conditioner
  • Solvent

Cosmetic functions

  • Skin conditioning
  • Skin conditioning - emollient

How it is made

By far the largest amount of saturated hydrocarbons is obtained from the natural sources natural gas and petroleum, either by isolation, e.g., fractional distillation, or by suitable conversion reactions. Additional sources include various products derived from coal processing or biomass conversion reactions, e.g., Fischer-Tropsch synthesis. Saturated hydrocarbons that are unavailable from natural sources or for laboratory purposes are produced by special synthesis or by conversion processes. (Saturated hydrocarbons)

Undecane is obtained from the refining of petroleum.

Read more

Paraffins are isolated by selective adsorption followed by fractional distillation to produce the desired mix of n-paraffins.

Isolation of n-paraffins (C9-C17) from kerosene and gas oil fractions of crude oil by selective adsorption with molecular sieves or adduction with urea followed by fractional distillation to produce the desired mixture of n-paraffins.

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 Undecane is traded under.

HS 2901.10Indicative HS code

Saturated

World exports in 2024
$8.47B
+23.9% vs 2023, imports $7.66B
2019 to 2024
Top exporters
  1. United States79.8%
  2. Canada10.1%
  3. Germany1.4%
Top importers
  1. China34.6%
  2. United States12.2%
  3. Sweden5.0%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Undecane, based on the data on this page

What is Undecane?

Undecane is a straight-chain alkane with 11 carbon atoms.

What is the CAS number of Undecane?

The CAS registry number of Undecane is 1120-21-4. Other or deprecated CAS numbers: 61193-21-3.

What is the molecular formula and weight of Undecane?

The molecular formula of Undecane is C11H24 and its molar mass is 156.31 g/mol.

What is Undecane used for?

Petroleum research, organic synthesis, distillation chaser. Component of gasoline.

Is Undecane hazardous?

Undecane carries the GHS signal word "Danger". Main hazards: may be fatal if swallowed and enters airways. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Undecane?

Undecane is usually classified under HS code 290110 (Saturated). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Undecane?

CompoundList lists 23 suppliers of Undecane in China, United States, Bulgaria, Switzerland and 2 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Undecane?

Suppliers quote Undecane 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 Undecane

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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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