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n-Pentane
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n-Pentane
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C5H12
n-Pentane

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
    72.149
    g/mol
  • Content in air
    /

Critical Point

  • Temperature
    196.55
    °C
    385.79 °F 469.7 K
  • Pressure
    33.7
    bar
    3.37E6 pa 488.777 lbf/in2 33.2593 Atm 3370 Kpa 2.5277E4 mmHg
  • Density
    232.002
    kg/m³
    14.4834 lb/ft³

Triple Point

  • Temperature
    - 129.73
    °C
    - 201.514 °F 143.42 K
  • Pressure
    7.634E-7
    bar
    7.634E-2 pa 1.1072E-5 lbf/in2 7.5342E-7 Atm 7.634E-5 Kpa 5.726E-4 mmHg
Pressure 1.013 bar
  • Melting point
    - 129.73
    °C
    - 201.514 °F 143.42 K
  • Latent heat of fusion (at melting point)
    116.447
    kJ/kg
    50.0968 Btu/lb 27.8315 kcal/kg
  • Solid density
    /
Pressure 1.013 bar
  • Liquid density
    609.71
    kg/m³
    38.0629 lb/ft³
  • Boiling point
    36.06
    °C
    96.908 °F 309.21 K
  • Latent heat of vaporization (at boiling point)
    357.58
    kJ/kg
    153.8349 Btu/lb 85.4637 kcal/kg
Pressure1.013barTemperature
  • Compressibility factor Z
    /
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    /
  • Cp/Cv ratio γ
    /
    /
    /
  • Dynamic viscosity
    /
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    /
  • Gas density at boiling point
    2.975
    kg/m³
    1.8572E-1 lb/ft³
    2.975
    kg/m³
    1.8572E-1 lb/ft³
    2.975
    kg/m³
    1.8572E-1 lb/ft³
  • Gas density
    /
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  • Heat capacity at constant pressure Cp
    /
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  • Heat capacity at constant volume Cv
    /
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  • Liquid (at boiling point)/gas equivalent
    /
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  • Solubility in water
    /
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  • Specific gravity
    /
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  • Specific volume
    /
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  • Thermal conductivity
    /
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  • Vapor pressure
    2.446E-1
    bar
    2.446E4 pa 3.5476 lbf/in2 2.414E-1 Atm 24.46 Kpa 183.4656 mmHg
    4.649E-1
    bar
    4.649E4 pa 6.7428 lbf/in2 4.5882E-1 Atm 46.49 Kpa 348.7046 mmHg
    6.84E-1
    bar
    6.84E4 pa 9.9206 lbf/in2 6.7506E-1 Atm 68.4 Kpa 513.0436 mmHg
C5H12
n-Pentane

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)
C5H12
n-Pentane

Applications

Examples of uses of this molecule in Industry and Healthcare

C5H12
n-Pentane

Safety

Information to safely use this molecule

  • Major hazards
  • Material compatibility
  • GHS02
    Flammable
  • GHS07
    Health hazards
  • GHS08
    Serious health hazard
  • GHS09
    Hazardous to the environment

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
      260
      °C
      500 °F 533.15 K
    • Flash point
      /
    • Lower flammability limit
      1.1
      vol/%
      1.1E4 ppm 1.1E4 ppm 1.1E-2 vol/vol
    • Upper flammability limit
      8.7
      vol/%
      8.7E4 ppm 8.7E4 ppm 8.7E-2 vol/vol
  • US (according to NFPA for Limits and ASTM E659 for autoignition temperature)

    • Auto-ignition temperature
      260
      °C
      500 °F 533.15 K
    • Flash point
      /
    • Lower flammability limit
      1.5
      vol/%
      1.5E4 ppm 1.5E4 ppm 1.5E-2 vol/vol
    • Upper flammability limit
      7.8
      vol/%
      7.8E4 ppm 7.8E4 ppm 7.8E-2 vol/vol

Odor

Gasoline

Metals

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

Plastics

  • Polytetrafluoroethylene
    no data
  • Polychlorotrifluoroethylene
    no data
  • 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
    no data
  • Nitrile rubber
    no data
  • Chloroprene
    no data
  • Chlorofluorocarbons
    no data
  • Silicon
    no data
  • Perfluoroelastomers
    no data
  • Fluoroelastomers
    no data
  • Nitrile rubber
    no data
  • Neoprene
    no data
  • Polyurethane
    no data
  • Ethylene-Propylene
    no data

Lubricants

  • Hydrocarbon based lubricant
    no data
  • Fluorocarbon based lubricant
    no data

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.

C5H12
n-Pentane

Learn More

General information

More information

N-Pentane is an organic compound with the formula C5H12. Pentanes are components of some fuels and are employed as specialty solvents in the laboratory. Because of its low boiling point, low cost, and relative safety, pentanes are used as a working medium in geothermal power stations in some blended refrigerants. Pentanes are also an active ingredient in some pesticides.