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Impurities and reference standards

Cyclopropane

Also known as Trimethylene, ciclopropano, cyclopropanum

CAS 75-19-4Formula C3H6Molar mass 42.08 g/molEC 200-847-8
GHS signal word: Danger. Pictograms: Flammable, Gas under pressure 13 suppliers listed
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Cyclopropane chemical structure, C3H6, CAS 75-19-4
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless gas
Melting point
-127.4 °C
Boiling point
-32.8 °C
Density
1.879 G/L AT 0 °C & 1 ATM
Solubility
FREELY SOL IN ALCOHOL, ETHER, SOL IN FIXED OILS, CONCN SULFURIC ACID, 1 VOL DISSOLVES IN…
HS code
290219
Category
Impurities and reference standards
UN number
UN 1027
Illustrative photo, a gas cylinder on a trolley on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Cyclopropane?

Plain description, key identifiers and synonyms

Cyclopropane is a cycloalkane composed of three carbon atoms to form a ring. It has a role as an inhalation anaesthetic. It is a cycloalkane and a member of cyclopropanes.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
cyclopropane
CAS number
75-19-4 CAS number cross-checked
EC number
200-847-8
Molecular formula
C3H6
UNII
99TB643425
MDL number
MFCD00001268
InChIKey
LVZWSLJZHVFIQJ-UHFFFAOYSA-N
InChI
InChI=1S/C3H6/c1-2-3-1/h1-3H2
SMILES (canonical and isomeric)
C1CC1

Synonyms

  • Trimethylene
  • ciclopropano
  • cyclopropanum
  • Zyklopropan
  • Trimethylene (cyclic)
  • RC 270
  • Cyclopropan
  • Cyclopropnane
  • Cyclopropane [Anaesthetics, volatile]
  • Cyclopropane, >=99%
  • Cyclopropane (USP/INN)
  • UN 1027
  • Cyclopropane [UN1027] [Flammable gas]

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
RESEMBLES THAT OF PETROLEUM ETHERexp.
Taste
PUNGENTexp.
Melting point
-127.4 °Cexp.
Boiling point
-32.8 °Cexp.
Density
1.879 G/L AT 0 °C & 1 ATMexp.
Autoignition temperature
497 °Cexp.
Solubility
FREELY SOL IN ALCOHOL, ETHER, SOL IN FIXED OILS, CONCN SULFURIC ACID, 1 VOL DISSOLVES IN ABOUT 2.7 VOL OF WATER AT 15 °Cexp.
Vapour pressure
5.41 × 10⁺³ mm Hg at 25 °C/ calculated from experimentally derived coefficients/exp.

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)
1.17calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
3calc.
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, C1CC1

C1CC1

1 ring, 3 atoms. This chemical is the scaffold itself.

17,446 other chemicals share this scaffold

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
410NFPA 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 1027
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

Cyclopropane suppliers

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

All 13 suppliers
13 of 13 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

13 suppliers in 6 countries

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Cyclopropane 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

Organic synthesis.

Veterinary medication:.

Cyclopropane is a sweet-smelling, flammable gas that has little or no laboratory, commercial, or industrial use.

Pharmacological actions

  • Anesthetics

Roles

  • anaesthetic
  • general anaesthetic
  • inhalation anaesthetic
  • pharmaceutical

How it is made

Reaction of 1,3-dibromopropane with zinc in alcohol

By reduction of 1,2-dibromocyclopropane with zinc and alcohol. From 1,3-dibromopropane with zinc and alcohol in absence of water. By action of sodium vapor on 1,3-dibromopropane. From 1,3-dichloropropane heated with excess zinc dust, iodine and ethanol in 80% yield. From 1,3-dichloropropane with zinc in presence of sodium iodide. From ethylene by the reaction with methylene iodide and a zinc-copper couple in 29% yield.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 601-016-00-6

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

Frequently asked questions

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

What is Cyclopropane?

Cyclopropane is a cycloalkane composed of three carbon atoms to form a ring. It has a role as an inhalation anaesthetic. It is a cycloalkane and a member of cyclopropanes.

What is the CAS number of Cyclopropane?

The CAS registry number of Cyclopropane is 75-19-4.

What is the molecular formula and weight of Cyclopropane?

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

What is Cyclopropane used for?

Organic synthesis. Veterinary medication:. Cyclopropane is a sweet-smelling, flammable gas that has little or no laboratory, commercial, or industrial use.

Is Cyclopropane hazardous?

Cyclopropane 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 Cyclopropane?

Cyclopropane 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 Cyclopropane?

CompoundList lists 13 suppliers of Cyclopropane in China, India, United States, Germany and 2 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Cyclopropane in India?

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

What is the price of Cyclopropane?

Suppliers quote Cyclopropane 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 Cyclopropane

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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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