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Hydrocarbons

Cyclohexylallene

Also known as Cyclohexalallene, (1,2-Propadienyl)cyclohexane, Cyclohexane, propadienyl-

CAS 5664-17-5Formula C9H14Molar mass 122.21 g/molEC 625-333-4
GHS signal word: Warning. Pictograms: Flammable, Hazardous to the environment
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Cyclohexylallene chemical structure, C9H14, CAS 5664-17-5
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
5664-17-5
Formula
C9H14
Molar mass
122.21 g/mol
Physical form
Liquid
HS code
290219
Category
Hydrocarbons
Illustrative photo, closed blue steel drums of liquid in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Cyclohexylallene?

Plain description, key identifiers and synonyms

Cyclohexylallene is a chemical substance with the molecular formula C9H14 and a molar mass of 122.21 g/mol. Its CAS registry number is 5664-17-5. The IUPAC name is propa-1,2-dienylcyclohexane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
propa-1,2-dienylcyclohexane
CAS number
5664-17-5
EC number
625-333-4
Molecular formula
C9H14
MDL number
MFCD00190199
InChIKey
CQHBBSICMXUMIB-UHFFFAOYSA-N
InChI
InChI=1S/C9H14/c1-2-6-9-7-4-3-5-8-9/h6,9H,1,3-5,7-8H2
SMILES (canonical and isomeric)
C=C=CC1CCCCC1

Synonyms

  • Cyclohexalallene
  • (1,2-Propadienyl)cyclohexane
  • Cyclohexane, propadienyl-
  • 1,2-Propadienylcyclohexane
  • Cyclohexane, 1,2-propadienyl-
  • propa-1,2-dienyl-cyclohexane
  • 1,2-Propadienylcyclohexane #
  • 1-Cyclohexyl-1,2-propadiene
  • Cyclohexylallene, 97%
  • 1,2-Propadien-1-ylcyclohexane
  • propa-1,2-dien-1-ylcyclohexane

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

Physical form
Liquidexp.

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
122.21 g/molcalc.
Exact mass
122.1096 Dacalc.
LogP (octanol/water)
2.91calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
1calc.
Heavy atoms
9calc.
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, C1CCCCC1

C1CCCCC1

1 ring, 6 atoms, the Cyclohexane ring system.

24,737 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS02: Flammable
Flammable
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H226Flammable liquid and vapour.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (13)
  • 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.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P391Collect spillage.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • 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

Cyclohexylallene suppliers

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Cyclohexylallene 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

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Cyclohexylallene 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 Cyclohexylallene is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Cyclohexylallene?

Cyclohexylallene is a chemical substance with the molecular formula C9H14 and a molar mass of 122.21 g/mol. Its CAS registry number is 5664-17-5. The IUPAC name is propa-1,2-dienylcyclohexane.

What is the CAS number of Cyclohexylallene?

The CAS registry number of Cyclohexylallene is 5664-17-5.

What is the molecular formula and weight of Cyclohexylallene?

The molecular formula of Cyclohexylallene is C9H14 and its molar mass is 122.21 g/mol.

What is Cyclohexylallene used for?

Known uses and roles of Cyclohexylallene include building blocks in research and laboratory.

Is Cyclohexylallene hazardous?

Cyclohexylallene carries the GHS signal word "Warning". Main hazards: flammable liquid and vapour, very toxic to aquatic life, very toxic to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Cyclohexylallene?

Cyclohexylallene 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 Cyclohexylallene?

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What is the price of Cyclohexylallene?

Suppliers quote Cyclohexylallene 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 Cyclohexylallene

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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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