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Properties of 2-ethylhexanoic acid

Thermophysical properties for 2-ethylhexanoic acid (CAS: 149-57-5). 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: 16, O: 2
  • CAS
    149-57-5
  • Formula
    C8H16O2
  • ID
    149-57-5
  • InChI
    C8H16O2/c1-3-5-6-7(4-2)8(9)10/h7H,3-6H2,1-2H3,(H,9,10)
  • InChI Key
    OBETXYAYXDNJHR-UHFFFAOYSA-N
  • IUPAC Name
    2-ethylhexanoic acid
  • Molecular Weight (kg)
    144.211
  • Phase
    l
  • PubChem ID
    8697
  • SMILES
    CCCCC(CC)C(=O)O
  • Synonyms

Physical Properties

  • Acentric factor
    0.8176
  • Critical pressure (bar)
    27.8
  • Critical temperature (°C)
    400.85
  • Critical volume (m³/kmol)
    0.528
  • Dipole moment
  • Melting temperature (°C)
    -59
  • Normal boiling temperature (°C)
    227.5

State-dependent Properties

  • API gravity
    24.0327
  • Compressibility factor
    0.00653461
  • Density (kg/m³)
    902.044
  • Dynamic viscosity (cP)
    5.69626
  • Enthalpy of vaporization (mass) (kJ)
    527.728
  • Enthalpy of vaporization (molar) (kJ/kmol)
    7.6104e+4
  • Gibbs free energy (kJ/kmol)
    0
  • Joule–Thomson coefficient
    -4.4413e-7
  • Kinematic viscosity
    6.3148e-6
  • Molar enthalpy (kJ/kmol)
    0
  • Molar entropy (kJ/(kmol·K))
    0
  • Molar heat capacity (kJ/(kmol·K))
    273.367
  • Molar volume (m³/kmol)
    0.159872
  • Parachor
    7.0926e-5
  • Poynting correction factor
    1.00656
  • Prandtl number
    76.9135
  • Saturation pressure (bar)
    1.6189e-5
  • Saturation temperature (°C)
    227.939
  • Solubility parameter
    2.1460e+4
  • Specific enthalpy (kJ)
    0
  • Specific entropy (kJ/kg·K)
    0
  • Specific gravity
    0.902932
  • Specific heat capacity (kJ/kg·K)
    1.8956
  • Surface tension
    0.0377358
  • Thermal conductivity
    0.140389
  • Thermal diffusivity
    8.2103e-8

Safety Properties

  • Autoignition temperature (°C)
    -273.15
  • Flash point temperature (°C)
    110
  • Lower flammability limit
    0.0102099
  • Upper flammability limit
    0.0632429

Environmental Properties

  • Global warming potential
  • Ozone depletion potential