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Properties of cyclooctatetraene

Thermophysical properties for cyclooctatetraene (CAS: 629-20-9). Use the selector below to view properties in different unit systems.

Calculation Conditions

The following state-dependent properties were calculated at these standard conditions.

Temperature

25 °C

Pressure

1.01325 bar

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Identification

  • Atoms
    C: 8, H: 8
  • CAS
    629-20-9
  • Formula
    C8H8
  • ID
    629-20-9
  • InChI
    C8H8/c1-2-4-6-8-7-5-3-1/h1-8H/b2-1-,3-1-,4-2-,5-3-,6-4-,7-5-,8-6-,8-7-
  • InChI Key
    KDUIUFJBNGTBMD-BONZMOEMSA-N
  • IUPAC Name
    cyclooctatetraene
  • Molecular Weight (kg)
    104.149
  • Phase
    l
  • PubChem ID
    -1
  • SMILES
    C1=C\C=C/C=C\C=C/1
  • Synonyms

Physical Properties

  • Acentric factor
    0.244
  • Critical pressure (bar)
    44.2
  • Critical temperature (°C)
    368.25
  • Critical volume (m³/kmol)
    0.328
  • Dipole moment
  • Melting temperature (°C)
    -4.7
  • Normal boiling temperature (°C)
    140

State-dependent Properties

  • API gravity
    16.9347
  • Compressibility factor
    0.00450475
  • Density (kg/m³)
    945.002
  • Dynamic viscosity (cP)
    0.445861
  • Enthalpy of vaporization (mass) (kJ)
    392.301
  • Enthalpy of vaporization (molar) (kJ/kmol)
    4.0858e+4
  • Gibbs free energy (kJ/kmol)
    0
  • Joule–Thomson coefficient
    -4.6585e-7
  • Kinematic viscosity
    4.7181e-7
  • Molar enthalpy (kJ/kmol)
    0
  • Molar entropy (kJ/(kmol·K))
    0
  • Molar heat capacity (kJ/(kmol·K))
    177.946
  • Molar volume (m³/kmol)
    0.110211
  • Parachor
    4.7021e-5
  • Poynting correction factor
    1.00447
  • Prandtl number
    5.67755
  • Saturation pressure (bar)
    0.0104541
  • Saturation temperature (°C)
    142.304
  • Solubility parameter
    1.8661e+4
  • Specific enthalpy (kJ)
    0
  • Specific entropy (kJ/kg·K)
    0
  • Specific gravity
    0.945931
  • Specific heat capacity (kJ/kg·K)
    1.70857
  • Surface tension
    0.0325424
  • Thermal conductivity
    0.134175
  • Thermal diffusivity
    8.3101e-8

Safety Properties

  • Autoignition temperature (°C)
    -273.15
  • Flash point temperature (°C)
    -273.15
  • Lower flammability limit
    0.0107757
  • Upper flammability limit
    0.0657835

Environmental Properties

  • Global warming potential
  • Ozone depletion potential