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Olefins and dienes

Pentylene

Also known as Alkenes, n-amylene [UN1108] [Flammable liquid], 1-Pentene [UN1108] [Flammable liquid]

CAS 25377-72-4Formula C10H20Molar mass 140.27 g/molEC 246-916-6
GHS signal word: Danger. Pictograms: Flammable, Serious health hazard, Hazardous to the environment 3 suppliers listed
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Pentylene chemical structure, C10H20, CAS 25377-72-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
25377-72-4
Formula
C10H20
Molar mass
140.27 g/mol
Appearance
Liq @ room temp
HS code
290129
Category
Olefins and dienes

What is Pentylene?

Plain description, key identifiers and synonyms

Pentylene is a chemical substance with the molecular formula C10H20 and a molar mass of 140.27 g/mol. Its CAS registry number is 25377-72-4. The IUPAC name is pent-1-ene, pent-2-ene.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
pent-1-ene, pent-2-ene
CAS number
25377-72-4
EC number
246-916-6
Molecular formula
C10H20
UNII
4JM12E034X
InChIKey
BOWDPJFAGBREQM-UHFFFAOYSA-N
InChI
InChI=1S/2C5H10/c2*1-3-5-4-2/h3,5H,4H2,1-2H3;3H,1,4-5H2,2H3
SMILES (canonical and isomeric)
CCCC=C.CCC=CC

Synonyms

  • Alkenes
  • n-amylene [UN1108] [Flammable liquid]
  • 1-Pentene [UN1108] [Flammable liquid]

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
Liq @ room tempexp.
Vapour pressure
60.8 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
140.27 g/molcalc.
Exact mass
140.1565 Dacalc.
LogP (octanol/water)
3.95calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
3calc.
Heavy atoms
10calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.6calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
2calc.
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
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H224Extremely flammable liquid and vapour.
  • H304May be fatal if swallowed and enters airways.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (16)
  • 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.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P331Do not induce vomiting.
  • 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.

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

Pentylene suppliers

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

All 3 suppliers
  • Chevron Corp.
    United States, San Ramon ManufacturerUnclaimed profile
    PentyleneGrade, purity and minimum order on request
    Price on request
    View
  • Shell Chemical LP
    United States, Norco ManufacturerUnclaimed profile
    PentyleneGrade, purity and minimum order on request
    Price on request
    View
  • Avantor Inc.
    United States, Radnor ManufacturerUnclaimed profile
    PentyleneGrade, purity and minimum order on request
    Price on request
    View

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

3 suppliers in 1 country

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Pentylene 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

Chemical intermediate (SRP).

Industrial uses: Fuel.

Consumer uses: Fuel.

How it is made

Separation of cracked petroleum distillates gives mixed pentenes, reaction of allyl bromide and ethylmagnesium bromide in dipropyl ether gives 1-pentene, dehydration of 2-pentanol gives racemic 2-pentene

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

Frequently asked questions

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

What is Pentylene?

Pentylene is a chemical substance with the molecular formula C10H20 and a molar mass of 140.27 g/mol. Its CAS registry number is 25377-72-4. The IUPAC name is pent-1-ene, pent-2-ene.

What is the CAS number of Pentylene?

The CAS registry number of Pentylene is 25377-72-4.

What is the molecular formula and weight of Pentylene?

The molecular formula of Pentylene is C10H20 and its molar mass is 140.27 g/mol.

What is Pentylene used for?

Chemical intermediate (SRP). Industrial uses: Fuel. Consumer uses: Fuel.

Is Pentylene hazardous?

Pentylene carries the GHS signal word "Danger". Main hazards: extremely flammable liquid and vapour, may be fatal if swallowed and enters airways, 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 Pentylene?

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

Where can I buy Pentylene?

CompoundList lists 3 suppliers of Pentylene in United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Pentylene?

Suppliers quote Pentylene 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 Pentylene

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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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