Chemcasts LogoChemcasts

Properties of tetramethylene diisocyanate

Thermophysical properties for tetramethylene diisocyanate (CAS: 4538-37-8). 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

Need properties at a different state? Use our interactive calculator.

Open Calculator

Identification

  • Atoms
    C: 6, H: 8, N: 2, O: 2
  • CAS
    4538-37-8
  • Formula
    C6H8N2O2
  • ID
    4538-37-8
  • InChI
    C6H8N2O2/c9-5-7-3-1-2-4-8-6-10/h1-4H2
  • InChI Key
    OVBFMUAFNIIQAL-UHFFFAOYSA-N
  • IUPAC Name
    1,4-diisocyanatobutane
  • Molecular Weight (kg)
    140.14
  • Phase
    l
  • PubChem ID
    3.5045e+5
  • SMILES
    O=C=NCCCCN=C=O
  • Synonyms

Physical Properties

  • Acentric factor
    0.5983
  • Critical pressure (bar)
    36.0016
  • Critical temperature (°C)
    433.55
  • Critical volume (m³/kmol)
    0.401
  • Dipole moment
  • Melting temperature (°C)
    -41.93
  • Normal boiling temperature (°C)
    197.07

State-dependent Properties

  • API gravity
    -3.45768
  • Compressibility factor
    0.00521675
  • Density (kg/m³)
    1098.02
  • Dynamic viscosity (cP)
    0.738376
  • Enthalpy of vaporization (mass) (kJ)
    488.988
  • Enthalpy of vaporization (molar) (kJ/kmol)
    6.8527e+4
  • Gibbs free energy (kJ/kmol)
    0
  • Joule–Thomson coefficient
    -4.6799e-7
  • Kinematic viscosity
    6.7246e-7
  • Molar enthalpy (kJ/kmol)
    0
  • Molar entropy (kJ/(kmol·K))
    0
  • Molar heat capacity (kJ/(kmol·K))
    225.048
  • Molar volume (m³/kmol)
    0.12763
  • Parachor
    5.8691e-5
  • Poynting correction factor
    1.00523
  • Prandtl number
    8.88094
  • Saturation pressure (bar)
    4.5187e-5
  • Saturation temperature (°C)
    225.778
  • Solubility parameter
    2.2749e+4
  • Specific enthalpy (kJ)
    0
  • Specific entropy (kJ/kg·K)
    0
  • Specific gravity
    1.0991
  • Specific heat capacity (kJ/kg·K)
    1.60588
  • Surface tension
    0.0437914
  • Thermal conductivity
    0.133515
  • Thermal diffusivity
    7.5720e-8

Safety Properties

  • Autoignition temperature (°C)
    -273.15
  • Flash point temperature (°C)
    -273.15
  • Lower flammability limit
    0.0160256
  • Upper flammability limit
    0.101981

Environmental Properties

  • Global warming potential
  • Ozone depletion potential