Chemcasts LogoChemcasts

Properties of octamethyltrisiloxane

Thermophysical properties for octamethyltrisiloxane (CAS: 107-51-7). 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: 8, H: 24, O: 2, Si: 3
  • CAS
    107-51-7
  • Formula
    C8H24O2Si3
  • ID
    107-51-7
  • InChI
    C8H24O2Si3/c1-11(2,3)9-13(7,8)10-12(4,5)6/h1-8H3
  • InChI Key
    CXQXSVUQTKDNFP-UHFFFAOYSA-N
  • IUPAC Name
    dimethyl-bis(trimethylsilyloxy)silane
  • Molecular Weight (kg)
    236.531
  • Phase
    l
  • PubChem ID
    2.4705e+4
  • SMILES
    C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C
  • Synonyms

Physical Properties

  • Acentric factor
    0.524
  • Critical pressure (bar)
    14.375
  • Critical temperature (°C)
    292.211
  • Critical volume (m³/kmol)
    0.881834
  • Dipole moment
  • Melting temperature (°C)
    -80
  • Normal boiling temperature (°C)
    152.48

State-dependent Properties

  • API gravity
    39.8837
  • Compressibility factor
    0.0118569
  • Density (kg/m³)
    815.391
  • Dynamic viscosity (cP)
    0.834444
  • Enthalpy of vaporization (mass) (kJ)
    204.315
  • Enthalpy of vaporization (molar) (kJ/kmol)
    4.8327e+4
  • Gibbs free energy (kJ/kmol)
    0
  • Joule–Thomson coefficient
    -4.3583e-7
  • Kinematic viscosity
    1.0234e-6
  • Molar enthalpy (kJ/kmol)
    0
  • Molar entropy (kJ/(kmol·K))
    0
  • Molar heat capacity (kJ/(kmol·K))
    421.719
  • Molar volume (m³/kmol)
    0.290083
  • Parachor
    1.0546e-4
  • Poynting correction factor
    1.01187
  • Prandtl number
    14.2821
  • Saturation pressure (bar)
    0.00499322
  • Saturation temperature (°C)
    152.481
  • Solubility parameter
    1.2572e+4
  • Specific enthalpy (kJ)
    0
  • Specific entropy (kJ/kg·K)
    0
  • Specific gravity
    0.816194
  • Specific heat capacity (kJ/kg·K)
    1.78293
  • Surface tension
    0.0166517
  • Thermal conductivity
    0.104169
  • Thermal diffusivity
    7.1654e-8

Safety Properties

  • Autoignition temperature (°C)
    -273.15
  • Flash point temperature (°C)
    26.8409
  • Lower flammability limit
    0.00874682
  • Upper flammability limit
    0.0556616

Environmental Properties

  • Global warming potential
    1.17
  • Ozone depletion potential