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Refrigerants and blowing agents

Propylene

Also known as Propene, prop-1-ene, 1-Propene

CAS 115-07-1Formula C3H6Molar mass 42.08 g/molEC 204-062-1
GHS signal word: Danger. Pictograms: Flammable, Gas under pressure 196 suppliers listed
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Propylene chemical structure, C3H6, CAS 115-07-1
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless gas
Melting point
-185.3 °C
Boiling point
-47.7 °C
Density
0.505 g/cm³ at 25 °C (pressure >1 atm )
Flash point
-108 °C
HS code
290122
Category
Refrigerants and blowing agents
UN number
UN 1077
Illustrative photo, a bundle of gas cylinders on a manifold in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Propylene?

Plain description, key identifiers and synonyms

Propene is an alkene that is propane with a double bond at position 1. It has a role as a xenobiotic and a refrigerant. It is a gas molecular entity and an alkene.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
prop-1-ene
CAS number
115-07-1 CAS number cross-checkedOther or deprecated CAS: 13987-01-4, 26063-22-9, 6842-15-5, 90530-12-4, 97102-85-7
EC numbers
204-062-1, 292-050-7, 306-335-1
Molecular formula
C3H6
UNII
AUG1H506LY
MDL number
MFCD00009279, MFCD00084447
InChIKey
QQONPFPTGQHPMA-UHFFFAOYSA-N
InChI
InChI=1S/C3H6/c1-3-2/h3H,1H2,2H3
SMILES (canonical and isomeric)
CC=C

Synonyms

  • Propene
  • prop-1-ene
  • 1-Propene
  • Methylethylene
  • Methylethene
  • 1-Propylene
  • isopropylidene
  • Propene-2-13C
  • Propene-1-13C (gas)
  • CH3CH=CH2
  • CH2=CH-CH3
  • Propene (3,3,3-D3)
  • Propene-2-d1
  • Propene (2.0-3.5% in Hexane)
  • Propene (2.0-3.5% in Heptane)
  • Propene, pure
  • Polipropene 25
  • Propylene, >=99%
  • endo-Ser39-Tirzepatide
  • Propene (1-2% in Toluene)
  • UN 1077
  • Propylene, 99.5%, Messer(R) CANGas
  • Propylene tetramer [UN2850] [Flammable liquid]
  • Homopolymer Polypropylene (3 Strips, 2'' x 2 1/2'' each)
  • Polypropylene, isotactic (average MW~250, 000 by GPC)average MW~250, 000 by GPC)

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 gasexp.
Odour
Practically odorless, aromaticexp.
Melting point
-185.3 °Cexp.
Boiling point
-47.7 °Cexp.
Density
0.505 g/cm³ at 25 °C (pressure >1 atm )exp.
Flash point
-108 °Cexp.
Autoignition temperature
455 °Cexp.
Solubility
In water, 200 mg/L at 25 °Cexp.
Vapour pressure
VP: 10 atm at 19.8 °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
42.08 g/molcalc.
Exact mass
42.047 Dacalc.
LogP (octanol/water)
1.19calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
3calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.33calc.
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
GHS04: Gas under pressure
Gas under pressure
411NFPA 704 rating

Hazard statements

  • H220Extremely flammable gas.
Precautionary statements (7)
  • P203Obtain, read and follow all safety instructions before use.
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P222Do not allow contact with air.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P377Leaking gas fire: do not extinguish, unless leak can be stopped safely.
  • P381In case of leakage, eliminate all ignition sources.
  • P403Store in a well-ventilated place.
UN number
UN 1077
Transport hazard class
2.1

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

Propylene suppliers

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

All 196 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

196 suppliers in 33 countries

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Propylene 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

In polymerized form as polypropylene for plastics and carpet fibers. Chemical intermediate in the manufacture of acetone, isopropylbenzene, isopropanol, isopropyl halides, propylene oxide, acrylonitrile, cumene.

Almost two thirds of the propene produced is used to produce polypropylene, a plastic material accounting for 25% of all plastic products today. Other important applications are propylene oxide, acrylic acid, acrylonitrile and cumene.

Refinery-grade propene (i.e., 50-70% pure propene in propane) is obtained from refinery processes. The main uses of refinery propene are in liquefied petroleum gas for thermal use or as an octane-enhancing component in motor gasoline.

Read more

Refinery-grade propene can also be used in some chemical syntheses.

Chemical-grade propene is used extensively for most chemical derivatives (e.g., oxo alcohols, acrylonitrile, or polypropylene).

Industrial uses: Processing aids, specific to petroleum production, Intermediate, Refrigerants, Abrasives, Fuel agents, Fuel, Processing aids not otherwise specified.

Consumer uses: Intermediate, Abrasives, Fuel agents, Fuel, Other.

Roles

  • refrigerant
  • xenobiotic

Functional uses

  • Binder

How it is made

Obtained from petroleum oils during the refining of gasoline. Catalytic or thermal cracking of hydrocarbons always yields propylene. Can be obtained by catalytic dehydrogenation of propane.

The propene produced in refineries originates from cracking processes. ... Refinery cracking processes operate either purely thermally or thermally-catalytically. By far the most important refinery process for propene production is the fluid-catalytic cracking (FCC) process, in which the powdery catalyst flows as a fluidized bed through the reaction and regeneration phases.

Read more

This process converts heavy gas oil preferentially into gasoline and light gas oil. Catalysts utilized in FCC units can be modified to produce more propene. Typical propene yields in conventional FCC units are 3%, which can be increased up to 20% by modification of the catalyst by addition of ZSM-5 zeolite to the FCC catalyst. ... As all FCC streams contain contaminants for further processing of the propene, purification to the specified quality (chemical grade or polymer grade) is required.

Propane dehydrogenation is an endothermic equilibrium reaction that is generally performed in the presence of catalysts such as platinum or chromium on special carriers. To improve the selectivity and reduce the coking of the catalyst, a variety of proprietary modifiers are added to the noble metals. Some catalysts require a metal redistribution step after each regeneration.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 601-011-00-9

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 Propylene is traded under.

HS 2901.22Exact HS code

Propene (propylene)

World exports in 2024
$5.08B
+3.8% vs 2023, imports $4.99B
2019 to 2024
Top exporters
  1. South Korea28.0%
  2. Netherlands15.9%
  3. Japan8.4%
Top importers
  1. China35.0%
  2. Germany12.4%
  3. Netherlands9.0%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Propylene is indicative (it was matched by name in the HS nomenclature). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Propylene?

Propene is an alkene that is propane with a double bond at position 1. It has a role as a xenobiotic and a refrigerant. It is a gas molecular entity and an alkene.

What is the CAS number of Propylene?

The CAS registry number of Propylene is 115-07-1. Other or deprecated CAS numbers: 13987-01-4, 26063-22-9, 6842-15-5.

What is the molecular formula and weight of Propylene?

The molecular formula of Propylene is C3H6 and its molar mass is 42.08 g/mol.

What is Propylene used for?

In polymerized form as polypropylene for plastics and carpet fibers. Chemical intermediate in the manufacture of acetone, isopropylbenzene, isopropanol, isopropyl halides, propylene oxide, acrylonitrile, cumene.

Is Propylene hazardous?

Propylene carries the GHS signal word "Danger". Main hazards: extremely flammable gas. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Propylene?

Propylene is usually classified under HS code 290122 (Propene (propylene)). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Propylene?

CompoundList lists 196 suppliers of Propylene in United States, China, India, Germany and 29 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Propylene in India?

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

What is the price of Propylene?

Suppliers quote Propylene 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 Propylene

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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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