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Olefins and dienes

1-Octene

Also known as Oct-1-ene, Caprylene, 1-Octylene

CAS 111-66-0Formula C8H16Molar mass 112.22 g/molEC 203-893-7
GHS signal word: Danger. Pictograms: Flammable, Harmful or irritant, Serious health hazard, Hazardous to the environment 41 suppliers listed
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1-Octene chemical structure, C8H16, CAS 111-66-0
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless liquid
Melting point
-101.7 °C
Boiling point
121.2 °C
Density
0.7149 /1-Octene/, 0.7199 g/cm³ @ 20 °C /2-Octene (E)/, 0.7243 g/cm³ @ 20 °C /2-Octene (…
Flash point
21 °C
HS code
290129
Category
Olefins and dienes
UN number
UN 3295
Illustrative photo, 25 litre white jerry cans of liquid in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is 1-Octene?

Plain description, key identifiers and synonyms

1-octene is an octene with an unsaturation C-1.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
oct-1-ene
CAS number
111-66-0 CAS number cross-checkedOther or deprecated CAS: 25377-83-7, 26746-84-9
EC numbers
203-893-7, 246-920-8
Molecular formula
C8H16
UNII
E5VK21B9RC
MDL number
MFCD00009548
INCI name
OCTENE
InChIKey
KWKAKUADMBZCLK-UHFFFAOYSA-N
InChI
InChI=1S/C8H16/c1-3-5-7-8-6-4-2/h3H,1,4-8H2,2H3
SMILES (canonical and isomeric)
CCCCCCC=C

Synonyms

  • Oct-1-ene
  • Caprylene
  • 1-Octylene
  • n-1-Octene
  • 1-Caprylene
  • Octylene
  • alpha-Octene
  • alpha-Octylene
  • Octene-1
  • Octene
  • Neodene 8
  • 1-?Octene
  • 1-Octene, 98%
  • 1-Octene, analytical standard
  • 1-n-octene
  • Octene, 1-
  • n-octene
  • 1-Octene-d2
  • C8-9 alpha-Alkenes
  • 1-Octene, 97%
  • SHOP C8
  • 1-Octene, purum, >=97.0% (GC)
  • 1-Octene Solution in Methanol, 100ug/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
Colorless liquidexp.
Melting point
-101.7 °Cexp.
Boiling point
121.2 °Cexp.
Density
0.7149 /1-Octene/, 0.7199 g/cm³ @ 20 °C /2-Octene (E)/, 0.7243 g/cm³ @ 20 °C /2-Octene (Z)/, 0.7152 g/cm³ @ 20 °C /3-Octene (E)/, 0.7159 g/cm³ @ 20 °C /3-Octene (Z)/, 0.7141 g/cm³ @ 20 °C /4-Octene (E)/, 0.7212 g/cm³ @…exp.
Flash point
21 °Cexp.
Autoignition temperature
230 °Cexp.
Solubility
In water, 4.1 mg/l @ 25 °Cexp.
Vapour pressure
17.4 mm Hg @ 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
112.22 g/molcalc.
Exact mass
112.1252 Dacalc.
LogP (octanol/water)
3.14calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
5calc.
Heavy atoms
8calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.75calc.
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
GHS02: Flammable
Flammable
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment
310NFPA 704 rating

Hazard statements

  • H225Highly flammable liquid and vapour.
  • H304May be fatal if swallowed and enters airways.
  • H315Causes skin irritation.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (21)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P233Keep container tightly closed.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P242Use non-sparking tools.
  • P243Take action to prevent static discharges.
  • P264Wash skin thoroughly after handling.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P302 + P352If on skin: Wash with plenty of water.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P331Do not induce vomiting.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P391Collect spillage.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 3295
Transport hazard class
3
Packing group
II

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

1-Octene suppliers

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

All 41 suppliers
30 of 30 offers

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

41 suppliers in 7 countries

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1-Octene price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Organic synthesis, plasticizer, surfactants.

As a comonomer in the production of high density polyethylene and linear low density polyethylene. The addition of 1-octene is used to modify the density and other properties of the polymer.

Used in the polymer, surfactant and detergent industries.

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

Consumer uses: Lubricating agent, Monomers, Intermediate.

Cosmetic ingredient, INCI name OCTENE(solvent)

Functional uses

  • Flavouring and nutrient
  • Fragrance
  • Solvent

Cosmetic functions

  • Solvent

How it is made

/Prepared/ ... from appropriate alkylmagnesium bromide & allyl bromide or chloride ... From formaldehyde or paraformaldehyde & triphenyl(phenylmethylene)phosphorane ...

/Prepared/ ... by catalytic dehydration of 2-octanol ...

Reaction of butylenes or low molecular weight olefinic refinery streams (usually containing butylenes) over a phosphoric acid catalyst to form polygas, followed by fractionation

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 1-Octene is traded under.

HS 2901.29Indicative HS code

Unsaturated, other

World exports in 2024
$2.65B
−3.2% vs 2023, imports $2.57B
2019 to 2024
Top exporters
  1. United States43.9%
  2. South Africa15.3%
  3. Qatar * partner reported9.0%
Top importers
  1. Singapore10.9%
  2. United States10.1%
  3. South Korea8.7%

* Partner reported figures, a lower bound.

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

The HS code shown for 1-Octene is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 1-Octene, based on the data on this page

What is 1-Octene?

1-octene is an octene with an unsaturation C-1.

What is the CAS number of 1-Octene?

The CAS registry number of 1-Octene is 111-66-0. Other or deprecated CAS numbers: 25377-83-7, 26746-84-9.

What is the molecular formula and weight of 1-Octene?

The molecular formula of 1-Octene is C8H16 and its molar mass is 112.22 g/mol.

What is 1-Octene used for?

Organic synthesis, plasticizer, surfactants. As a comonomer in the production of high density polyethylene and linear low density polyethylene. The addition of 1-octene is used to modify the density and other properties of the polymer. Used in the polymer, surfactant and detergent industries.

Is 1-Octene hazardous?

1-Octene carries the GHS signal word "Danger". Main hazards: highly flammable liquid and vapour, may be fatal if swallowed and enters airways, causes skin irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 1-Octene?

1-Octene is usually classified under HS code 290129 (Unsaturated, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 1-Octene?

CompoundList lists 41 suppliers of 1-Octene in United States, China, India, Switzerland 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 1-Octene in India?

2 suppliers in India list 1-Octene on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of 1-Octene?

Suppliers quote 1-Octene 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 1-Octene

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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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