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Chromatography and spectroscopy reagents

Cyclopentane

Also known as Pentamethylene, ciclopentano, cyclopentan

CAS 287-92-3Formula C5H10Molar mass 70.14 g/molEC 206-016-6
GHS signal word: Danger. Pictograms: Flammable 114 suppliers listed
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Cyclopentane chemical structure, C5H10, CAS 287-92-3
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless liquid
Melting point
-93.4 °C
Boiling point
49.2 °C
Density
0.7457 g/cm³ at 20 °C
Flash point
-20 °C
HS code
290219
Category
Chromatography and spectroscopy reagents
UN number
UN 1146
Illustrative photo, clear colourless liquid in a glass reagent bottle on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Cyclopentane?

Plain description, key identifiers and synonyms

Cyclopentane is a cycloalkane that consists of five carbons each bonded with two hydrogens above and below the plane. The parent of the class of cyclopentanes. It has a role as a non-polar solvent. It is a volatile organic compound, a cycloalkane and a member of cyclopentanes.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
cyclopentane
CAS number
287-92-3 CAS number cross-checked
EC number
206-016-6
Molecular formula
C5H10
UNII
T86PB90RNU
MDL number
MFCD00001356
InChIKey
RGSFGYAAUTVSQA-UHFFFAOYSA-N
InChI
InChI=1S/C5H10/c1-2-4-5-3-1/h1-5H2
SMILES (canonical and isomeric)
C1CCCC1

Synonyms

  • Pentamethylene
  • ciclopentano
  • cyclopentan
  • Zyklopentan
  • Cyclopentanes
  • trans-cyclopentane
  • Cyclopentane, HPLC Grade
  • Cyclopentane 75%
  • Cyclopentane (ZEONSOLVaa? HP)
  • Cyclopentane, analytical standard
  • Cyclopentane, reagent grade, 98%
  • UN 1146
  • Cyclopentane [UN1146] [Flammable liquid]
  • Cyclopentane, for HPLC, >=75% cyclopentane basis
  • ASTM Method D5191 Vapor Pressure - 68.3kPa (9.91 psi)
  • Cyclopentane, >=75% cyclopentane basis, spectrophotometric grade

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
Mild, sweet odorexp.
Melting point
-93.4 °Cexp.
Boiling point
49.2 °Cexp.
Density
0.7457 g/cm³ at 20 °Cexp.
Flash point
-20 °Cexp.
Autoignition temperature
361 °Cexp.
Solubility
In water, 156 ppm at 25 °Cexp.
Vapour pressure
VP: 400 mm Hg at 31.0 °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
70.14 g/molcalc.
Exact mass
70.0783 Dacalc.
LogP (octanol/water)
1.95calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
5calc.
Rings
1calc.
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.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, C1CCCC1

C1CCCC1

1 ring, 5 atoms. This chemical is the scaffold itself.

10,985 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
310NFPA 704 rating

Hazard statements

  • H225Highly flammable liquid and vapour.
  • H412Harmful to aquatic life with long lasting effects.
Precautionary statements (12)
  • 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.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 1146
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

Cyclopentane suppliers

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

All 114 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

114 suppliers in 21 countries

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Cyclopentane 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

It is commonly used for cracking aromatics. Commercially, ... used to produce a variety of analgesics, sedatives, hypnotics, antitumor agents, CNS depressants, prostaglandins, insecticides, and many other products.

As a solvent for cellulose esters, as a motor fuel, and as an azeotropic distillation agent.

Industrial uses: Propellants, non-motive (blowing agents), Intermediate, Fuel, Fuel agents, Other, Solvent.

Consumer uses: Other, Fuel, Propellants, non-motive (blowing agents), Intermediate.

Roles

  • non-polar solvent
  • solvent

Functional uses

  • Solvent

How it is made

Prepared by cracking cyclohexane in presence of alumina at high temperatures and pressure.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 601-030-00-2

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 Cyclopentane 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 Cyclopentane is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Cyclopentane?

Cyclopentane is a cycloalkane that consists of five carbons each bonded with two hydrogens above and below the plane. The parent of the class of cyclopentanes. It has a role as a non-polar solvent. It is a volatile organic compound, a cycloalkane and a member of cyclopentanes.

What is the CAS number of Cyclopentane?

The CAS registry number of Cyclopentane is 287-92-3.

What is the molecular formula and weight of Cyclopentane?

The molecular formula of Cyclopentane is C5H10 and its molar mass is 70.14 g/mol.

What is Cyclopentane used for?

It is commonly used for cracking aromatics. Commercially, ... used to produce a variety of analgesics, sedatives, hypnotics, antitumor agents, CNS depressants, prostaglandins, insecticides, and many other products. As a solvent for cellulose esters, as a motor fuel, and as an azeotropic distillation agent.

Is Cyclopentane hazardous?

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

Cyclopentane 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 Cyclopentane?

CompoundList lists 114 suppliers of Cyclopentane in China, United States, Germany, India and 17 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Cyclopentane in India?

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

What is the price of Cyclopentane?

Suppliers quote Cyclopentane 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 Cyclopentane

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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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