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Cyclopropane
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Cyclopropane
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C3H6
Cyclopropane

Physical Properties

Under solid (grey), liquid (blue) and vapor states (white) along the equilibrium curves

  • General properties
  • Solid phase
  • Liquid Phase
  • Gas Phase
(P)
log(P)
Download
  • Molecular weight
    42.081
    g/mol
  • Content in air
    /

Critical Point

  • Temperature
    124.85
    °C
    256.73 °F 398 K
  • Pressure
    54.94
    bar
    5.494E6 pa 796.837 lbf/in2 54.2216 Atm 5494 Kpa 4.1209E4 mmHg
  • Density
    259.761
    kg/m³
    16.2163 lb/ft³

Triple Point

  • Temperature
    - 127.56
    °C
    - 197.608 °F 145.59 K
  • Pressure
    7.796E-4
    bar
    77.9601 pa 1.1307E-2 lbf/in2 7.6941E-4 Atm 7.796E-2 Kpa 5.8475E-1 mmHg
Pressure 1.013 bar
  • Melting point
    - 127.56
    °C
    - 197.608 °F 145.59 K
  • Latent heat of fusion (at melting point)
    129.274
    kJ/kg
    55.6151 Btu/lb 30.8972 kcal/kg
  • Solid density
    /
Pressure 1.013 bar
  • Liquid density
    678.304
    kg/m³
    42.345 lb/ft³
  • Boiling point
    - 31.48
    °C
    - 24.664 °F 241.67 K
  • Latent heat of vaporization (at boiling point)
    471.56
    kJ/kg
    202.8704 Btu/lb 112.7055 kcal/kg
Pressure1.013barTemperature
  • Compressibility factor Z
    9.779E-1
    9.8167E-1
    9.8371E-1
  • Cp/Cv ratio γ
    1.2136
    1.1968
    1.1869
  • Dynamic viscosity
    8.165E-5
    Po
    8.165 µPa.s 8.165E-6 PA.S 5.4866E-6 lb/ft/s
    8.6113E-5
    Po
    8.6113 µPa.s 8.6113E-6 PA.S 5.7865E-6 lb/ft/s
    8.9055E-5
    Po
    8.9055 µPa.s 8.9055E-6 PA.S 5.9842E-6 lb/ft/s
  • Gas density at boiling point
    /
    /
    /
  • Gas density
    1.9194
    kg/m³
    1.1982E-1 lb/ft³
    1.8125
    kg/m³
    1.1315E-1 lb/ft³
    1.7481
    kg/m³
    1.0913E-1 lb/ft³
  • Heat capacity at constant pressure Cp
    1.2501
    kJ/(kg.K)
    2.9878E-1 BTU/lb∙°F 1250.1 J/kg∙K 2.9878E-1 kcal/kg∙K
    1.3129
    kJ/(kg.K)
    3.1379E-1 BTU/lb∙°F 1312.9 J/kg∙K 3.1379E-1 kcal/kg∙K
    1.3567
    kJ/(kg.K)
    3.2426E-1 BTU/lb∙°F 1356.7 J/kg∙K 3.2426E-1 kcal/kg∙K
  • Heat capacity at constant volume Cv
    1.0301
    kJ/(kg.K)
    2.462E-1 BTU/lb∙°F 1030.1 J/kg∙K 2.462E-1 kcal/kg∙K
    1.097
    kJ/(kg.K)
    2.6219E-1 BTU/lb∙°F 1097 J/kg∙K 2.6219E-1 kcal/kg∙K
    1.1431
    kJ/(kg.K)
    2.7321E-1 BTU/lb∙°F 1143.1 J/kg∙K 2.7321E-1 kcal/kg∙K
  • Liquid (at boiling point)/gas equivalent
    354.23
    mol/mol
    375.12
    mol/mol
    388.94
    mol/mol
  • Solubility in water
    /
    /
    2.769E-1
    mol/mol
  • Specific gravity
    1.45
    1.45
    1.45
  • Specific volume
    5.21E-1
    m³/kg
    8.3456 ft³/lb
    5.517E-1
    m³/kg
    8.8374 ft³/lb
    5.721E-1
    m³/kg
    9.1642 ft³/lb
  • Thermal conductivity
    13.518
    mW/m∙K
    7.8158E-3 Btu/ft/h/°F 1.1631E-1 cal/hour∙cm∙°C 3.2309E-5 cal/s∙cm∙°C 1.3518E-2 W/(m∙K)
    14.96
    mW/m∙K
    8.6495E-3 Btu/ft/h/°F 1.2872E-1 cal/hour∙cm∙°C 3.5755E-5 cal/s∙cm∙°C 1.496E-2 W/(m∙K)
    15.961
    mW/m∙K
    9.2283E-3 Btu/ft/h/°F 1.3733E-1 cal/hour∙cm∙°C 3.8148E-5 cal/s∙cm∙°C 1.5961E-2 W/(m∙K)
  • Vapor pressure
    3.4701
    bar
    3.4701E5 pa 50.3295 lbf/in2 3.4247 Atm 347.01 Kpa 2602.7962 mmHg
    5.4973
    bar
    5.4973E5 pa 79.7316 lbf/in2 5.4254 Atm 549.73 Kpa 4123.3255 mmHg
    7.2641
    bar
    7.2641E5 pa 105.3568 lbf/in2 7.1691 Atm 726.41 Kpa 5448.5381 mmHg
C3H6
Cyclopropane

Liquid / Gas Volumes

Calculate a liquid or gas volume or a mass

Liquid Phase

At boiling point at 1.013 bar

m3(Volume)
kg(Mass)

Gas Phase

at 1.013 bar and boiling point

m3(Volume)
kg(Mass)
C3H6
Cyclopropane

Applications

Examples of uses of this molecule in Industry and Healthcare

C3H6
Cyclopropane

Safety

Information to safely use this molecule

  • Major hazards
  • Material compatibility
  • GHS02
    Flammable
  • GHS04
    Gas under pressure

Autoignition Temperature in Air at Patm and Flammability Limits in Air at Patm and 293.15 K (except if the temperature is indicated)

  • Europe (according to EN1839 for Limits and EN 14522 for autoignition temperature)

    • Auto-ignition temperature
      495
      °C
      923 °F 768.15 K
    • Flash point
      /
    • Lower flammability limit
      2.4
      vol/%
      2.4E4 ppm 2.4E4 ppm 2.4E-2 vol/vol
    • Upper flammability limit
      10.4
      vol/%
      1.04E5 ppm 1.04E5 ppm 1.04E-1 vol/vol
  • US (according to NFPA for Limits and ASTM E659 for autoignition temperature)

    • Auto-ignition temperature
      498
      °C
      928.4 °F 771.15 K
    • Flash point
      /
    • Lower flammability limit
      2.4
      vol/%
      2.4E4 ppm 2.4E4 ppm 2.4E-2 vol/vol
    • Upper flammability limit
      10.4
      vol/%
      1.04E5 ppm 1.04E5 ppm 1.04E-1 vol/vol

Odor

Petroleum Ether

Metals

  • Aluminium
    Satisfactory
  • Brass
    Satisfactory
  • Monel
    no data
  • Copper
    no data
  • Ferritic Steel
    Satisfactory
  • Stainless steel
    Satisfactory
  • Zinc
    no data
  • Titanium
    no data

Plastics

  • Polytetrafluoroethylene
    Satisfactory
  • Polychlorotrifluoroethylene
    Satisfactory
  • Polyvinylidene fluoride
    no data
  • Polyvinyl chloride
    no data
  • Ethylene tetrafluoroethylene
    no data
  • Polycarbonate
    no data
  • Polyamide
    no data
  • Polypropylene
    no data

Elastomers

  • Buthyl (isobutene- isoprene) rubber
    Not recommended
    significant swelling
  • Nitrile rubber
    Satisfactory
  • Chloroprene
    Not recommended
    significant swelling
  • Chlorofluorocarbons
    Satisfactory
  • Silicon
    Not recommended
    significant swelling
  • Perfluoroelastomers
    no data
  • Fluoroelastomers
    no data
  • Nitrile rubber
    no data
  • Neoprene
    no data
  • Polyurethane
    no data
  • Ethylene-Propylene
    Not recommended
    significant swelling

Lubricants

  • Hydrocarbon based lubricant
    Not recommended
    significant loss of mass
  • Fluorocarbon based lubricant
    Satisfactory

Materials compatibility

Recommendations : Air Liquide has gathered data on the compatibility of gases with materials to assist you in evaluating which materials to use for a gas system. Although the information has been compiled from what Air Liquide believes are reliable sources (International Standards: Compatibility of cylinder and valve materials with gas content; Part 1- Metallic materials: ISO11114-1 (March 2012), Part 2 - Non-metallic materials: ISO11114-2 (April 2013), it must be used with extreme caution and engineering judgement. No raw data such as these can cover all conditions of concentration, temperature, humidity, impurities and aeration. It is therefore recommended that this table is only used to identify possible materials for applications at high pressure and ambient temperature. Extensive investigation and testing under the specific conditions of use need to be carried out to validate a material selection for a given application. Contact the regional Air Liquide team for expertise service.

C3H6
Cyclopropane

Learn More

General information

More information

Cyclopropane was discovered in 1881 by August Freund, who also proposed the correct structure for the new substance in his first paper.