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Synthetic aroma chemicals

2-Octanol

Also known as Octan-2-ol, 2-Octyl alcohol, Hexylmethylcarbinol

CAS 123-96-6Formula C8H18OMolar mass 130.23 g/molEC 204-667-0
GHS signal word: Danger. Pictograms: Corrosive, Harmful or irritant 24 suppliers listed
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2-Octanol chemical structure, C8H18O, CAS 123-96-6
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Liquid
Melting point
-31.6 °C
Boiling point
179 °C
Density
0.8193 g/cm³ at 20 °C
Flash point
76 °C
HS code
290516
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-Octanol?

Plain description, key identifiers and synonyms

Octan-2-ol is an octanol carrying the hydroxy group at position 2. It has a role as a volatile oil component and a plant metabolite. It is a secondary alcohol and an octanol.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
octan-2-ol
CAS number
123-96-6 CAS number cross-checkedOther or deprecated CAS: 25339-16-6, 4128-31-8, 4128-32-9
EC numbers
204-667-0, 223-938-4
Molecular formula
C8H18O
UNII
66B0DD5E40
MDL number
MFCD00004591
INCI name
2-OCTANOL
InChIKey
SJWFXCIHNDVPSH-UHFFFAOYSA-N
InChI
InChI=1S/C8H18O/c1-3-4-5-6-7-8(2)9/h8-9H,3-7H2,1-2H3
SMILES (canonical and isomeric)
CCCCCCC(C)O

Synonyms

  • Octan-2-ol
  • 2-Octyl alcohol
  • Hexylmethylcarbinol
  • 2-Hydroxyoctane
  • 1-Methylheptyl alcohol
  • sec-Caprylic alcohol
  • Methylhexylcarbinol
  • 1-Methyl-1-heptanol
  • n-Octan-2-ol
  • Hexyl methyl carbinol
  • 2-Hydroxy-n-octane
  • Methyl hexyl carbinol
  • sec-OCTYL ALCOHOL
  • beta-Octyl alcohol
  • secondary Caprylic alcohol
  • Caprylic alcohol, secondary
  • Capryl alcohol
  • DL-2-Octanol
  • 1-Methylheptanol
  • s-Octyl alcohol
  • sec-Octanol
  • (+/-)-2-Octanol
  • L(-)-2-Octanol
  • D(+)-2-Octanol
  • Octanol-2
Show all 37 synonyms
  • (rs)-2-octanol
  • 2-Octanol, (2R)-
  • 2-Octanol, (.+/-.)-
  • Heptanol, methyl-
  • 2-Octanol (natural)
  • Secondary octyl alcohol
  • r-(-)-2-octanol
  • (1)-Octan-2-ol
  • 2-Octanol (+-)
  • (-)-2-Octanol
  • METHYL-n-HEXYLCARBINOL
  • (racemic)-2-octanol

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
Liquidexp.
Odour
Characteristically disagreeable, but aromaticexp.
Melting point
-31.6 °Cexp.
Boiling point
179 °Cexp.
Density
0.8193 g/cm³ at 20 °Cexp.
Flash point
76 °Cexp.
Solubility
In water, 1120 mg/L at 25 Cexp.
Vapour pressure
VP: 1 mm Hg at 32.8 °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
130.23 g/molcalc.
Exact mass
130.1358 Dacalc.
LogP (octanol/water)
2.34calc.
Topological polar surface area
20.23 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
5calc.
Heavy atoms
9calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
1calc.
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
GHS05: Corrosive
Corrosive
GHS07: Harmful or irritant
Harmful or irritant
210NFPA 704 rating

Hazard statements

  • H315Causes skin irritation.
  • H318Causes serious eye damage.
  • H319Causes serious eye irritation.
Precautionary statements (11)
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.

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-Octanol suppliers

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

All 24 suppliers
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Where suppliers are based

24 suppliers in 5 countries

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2-Octanol 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

In manufacture of perfumes, in disinfectant soaps. To prevent foaming. Solvent for fats and waxes.

Chemical intermediate for alcohol-derived surfactants.

Solvent, manufacture of plasticizers, wetting agents, foam-control agents, hydraulic oils, petroleum additives, perfume intermediates, masking of industrial odors.

It is used as a solvent in the paint industry, as a wetting agent in the textile industry, and as a component of brake fluids.

Reported uses (ppm):

Table: Reported uses (ppm): (Flavor and Extract Manufacturers' Association, 1994) [Table#5454].

Industrial uses: Other, Solvent.

Consumer uses: Intermediate, Solvent.

Use classes: Pesticide transformation products.

Cosmetic ingredient, INCI name 2-OCTANOL(perfuming)

Roles

  • eukaryotic metabolite
  • metabolite
  • plant metabolite
  • volatile oil component

Functional uses

  • Defoamer
  • Flavouring and nutrient
  • Fragrance
  • Solvent

Cosmetic functions

  • Perfuming

How it is made

Prepared by heating sodium ricinoleate with caustic soda in a copper vessel and distilling.

By distilling sodium ricinoleate with an excess of sodium hydroxide.

Obtained by the alkaline hydrolysis of castor oil.

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-Octanol is traded under.

HS 2905.16Indicative HS code

Octanol (octyl alcohol) and isomers thereof

World exports in 2024
$1.18B
+12.7% vs 2023, imports $1.54B
2019 to 2024
Top exporters
  1. United States19.7%
  2. South Korea13.8%
  3. Indonesia12.5%
Top importers
  1. China28.4%
  2. Turkey14.0%
  3. India * partner reported5.6%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is 2-Octanol?

Octan-2-ol is an octanol carrying the hydroxy group at position 2. It has a role as a volatile oil component and a plant metabolite. It is a secondary alcohol and an octanol.

What is the CAS number of 2-Octanol?

The CAS registry number of 2-Octanol is 123-96-6. Other or deprecated CAS numbers: 25339-16-6, 4128-31-8, 4128-32-9.

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

The molecular formula of 2-Octanol is C8H18O and its molar mass is 130.23 g/mol.

What is 2-Octanol used for?

In manufacture of perfumes, in disinfectant soaps. To prevent foaming. Solvent for fats and waxes. Chemical intermediate for alcohol-derived surfactants. Solvent, manufacture of plasticizers, wetting agents, foam-control agents, hydraulic oils, petroleum additives, perfume intermediates, masking of industrial odors.

Is 2-Octanol hazardous?

2-Octanol carries the GHS signal word "Danger". Main hazards: causes skin irritation, causes serious eye damage, causes serious eye irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 2-Octanol?

2-Octanol is usually classified under HS code 290516 (Octanol (octyl alcohol) and isomers thereof). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 2-Octanol?

CompoundList lists 24 suppliers of 2-Octanol in China, United States, Canada, Germany and 1 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 2-Octanol?

Suppliers quote 2-Octanol 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-Octanol

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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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