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Hydrocarbons

Cyclohexene

Also known as Tetrahydrobenzene, Cyclohex-1-ene, Benzene tetrahydride

CAS 110-83-8Formula C6H10Molar mass 82.15 g/molEC 203-807-8
GHS signal word: Danger. Pictograms: Flammable, Acute toxicity (severe), Harmful or irritant, Serious health hazard 51 suppliers listed
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Cyclohexene chemical structure, C6H10, CAS 110-83-8
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless liquid
Melting point
-103.5 °C
Boiling point
83 °C
Density
Relative density (water = 1): 0.81
Flash point
<-7
HS code
290219
Category
Hydrocarbons
UN number
UN 2256
Illustrative photo, a 1000 litre IBC tote of clear liquid in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Cyclohexene?

Plain description, key identifiers and synonyms

Cyclohexene is a cycloalkene that is cylohexane with a single double bond.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
cyclohexene
CAS number
110-83-8 CAS number cross-checkedOther or deprecated CAS: 25012-94-6
EC number
203-807-8
Molecular formula
C6H10
UNII
12L0P8F7GN
MDL number
MFCD00001539
InChIKey
HGCIXCUEYOPUTN-UHFFFAOYSA-N
InChI
InChI=1S/C6H10/c1-2-4-6-5-3-1/h1-2H,3-6H2
SMILES (canonical and isomeric)
C1CCC=CC1

Synonyms

  • Tetrahydrobenzene
  • Cyclohex-1-ene
  • Benzene tetrahydride
  • 1,2,3,4-Tetrahydrobenzene
  • Benzenetetrahydride
  • Hexanaphthylene
  • Cykloheksen
  • Benzene, tetrahydro-
  • 3,4,5,6-Tetrahydrobenzene
  • 1-Cyclohexene
  • Zyklohexen
  • cyclohexen
  • cylcohexene
  • cyclo hexene
  • cyclo-hexene
  • cyclohexane N
  • 2-cyclohexen
  • UN 2256
  • 1,3,4-Tetrahydrobenzene
  • 4-05-00-00218 (Beilstein Handbook Reference)
  • Cyclohexene, analytical standard
  • Cyclohexene [UN2256] [Flammable liquid]
  • Cyclohexene Solution in Methanol, 100ug/mL
  • Cyclohexene, inhibitor-free, ReagentPlus(R), 99%
  • Cyclohexene, contains 100 ppm BHT as inhibitor, >=99.0%

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
Sweet odorexp.
Melting point
-103.5 °Cexp.
Boiling point
83 °Cexp.
Density
Relative density (water = 1): 0.81exp.
Flash point
<-7exp.
Autoignition temperature
244 °Cexp.
Solubility
In water, 213 mg/L at 25 °Cexp.
Vapour pressure
Vapor pressure, kPa at 20 °C: 8.9exp.

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
82.15 g/molcalc.
Exact mass
82.0783 Dacalc.
LogP (octanol/water)
2.12calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
6calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.67calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, C1=CCCCC1

C1=CCCCC1

1 ring, 6 atoms. This chemical is the scaffold itself.

5,167 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
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.
  • H302Harmful if swallowed.
  • H304May be fatal if swallowed and enters airways.
  • H311Toxic in contact with skin.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (25)
  • 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.
  • P262Do not get in eyes, on skin, or on clothing.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P301 + P317If swallowed: Get medical help.
  • 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.
  • P316Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P331Do not induce vomiting.
  • P361 + P364Take off immediately all 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 2256
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

Cyclohexene suppliers

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

All 51 suppliers
30 of 30 offers

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Where suppliers are based

51 suppliers in 11 countries

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Cyclohexene 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

Alkylation component, in manufacture of adipic acid, maleic acid, hexahydrobenzoic acid and aldehyde. To prepare butadiene in the laboratory.

Catalyst solvent, oil extraction.

Cyclohexene ... is used as stabilizer for high octane gasoline ...

Used in the prepn of butadiene in lab ... Inorganic synth ...

/Cyclohexene/ is used as an intermediate for the production of cyclohexanol and cyclohexeneoxide, and as a specific solvent.

How it is made

Cyclohexene is prepared by dehydration of cyclohexanol by thermal reaction of a ethylene-propylene-butadiene mixture.

Prepared by dehydration of cyclohexanol at high temps over various catalysts.

In Japan, cyclohexene is synthesized in a closed system by catalytic hydrogenation of benzene, isolated by fractionation.

Regulatory status

Inventories, regulations and trade controls that list this substance

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 Cyclohexene is traded under.

HS 2902.19Indicative HS code

Cyclanes, cyclenes and cycloterpenes, other

World exports in 2024
$979M
+24.3% vs 2023, imports $1B
2019 to 2024
Top exporters
  1. China23.4%
  2. United States20.6%
  3. Germany13.6%
Top importers
  1. India * partner reported9.9%
  2. United States9.8%
  3. South Korea9.5%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Cyclohexene?

Cyclohexene is a cycloalkene that is cylohexane with a single double bond.

What is the CAS number of Cyclohexene?

The CAS registry number of Cyclohexene is 110-83-8. Other or deprecated CAS numbers: 25012-94-6.

What is the molecular formula and weight of Cyclohexene?

The molecular formula of Cyclohexene is C6H10 and its molar mass is 82.15 g/mol.

What is Cyclohexene used for?

Alkylation component, in manufacture of adipic acid, maleic acid, hexahydrobenzoic acid and aldehyde. To prepare butadiene in the laboratory. Catalyst solvent, oil extraction. Cyclohexene ... is used as stabilizer for high octane gasoline ... Used in the prepn of butadiene in lab ... Inorganic synth ...

Is Cyclohexene hazardous?

Cyclohexene carries the GHS signal word "Danger". Main hazards: highly flammable liquid and vapour, harmful if swallowed, 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 Cyclohexene?

Cyclohexene is usually classified under HS code 290219 (Cyclanes, cyclenes and cycloterpenes, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Cyclohexene?

CompoundList lists 51 suppliers of Cyclohexene in China, United States, India, United Kingdom and 7 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Cyclohexene in India?

5 suppliers in India list Cyclohexene on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Cyclohexene?

Suppliers quote Cyclohexene 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 Cyclohexene

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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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