R21  Thermodynamic & Transport Properties (Based on Venus model)
CAS number
Short Name
Full Name
Chemical Formula
Synonym dichlorofluoromethane; HCFC-21 ,Fluorodichloromethane;Freon 21
Molecular Weight
Triple Point Temperature Triple 
    Point Temperature
Normal Boiling Point Normal boiling point
Critical Temperature Critical Temperature
Critical Pressure>Critical Pressuresure
Critical Density
Acentric FactorAcentric Factor
Dipole MomentDipole Moment
R21 : Introduction
Dichlorofluoromethane or Freon 21 or R 21 is a halomethane or hydrochlorofluorocarbon. It is a colorless and odorless gas.Its critical point is at 178.5 °C (451.7 K) and 5.17 MPa (51.7 bar). At temperatures from 5 K to 105 K it has one phase in the space group Pbca.
Acceptable Range : < T <
< P <
Specific Enthalpy=
Specific Entropy=
Internal Energy=
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R21:Thermodynamic & Transport Properties Calculated Result
Molecular Weight=
Celsius,Fahrenheit,Reaumur & Thermodynamic Temperature ConversionTemperature=
absolute pressure & gauge pressurePressure=
Specific VolumeSpecific Volume=
     EnthalpySpecific Enthalpy=
Specific EntropySpecific Entropy=
Internal EnergyInternal Energy=

Saturated Vapor Pressure, Boiling Point(dew point), Latent Heat of Vaporization are saturated properties, just enter One parameter to calculate them!
Saturated Vapor Pressure=
Boiling Point (Dew Point)=
latent heat of vaporizationVaporization Latent Heat=
Constant Pressure Specific HeatSpecific Heat(Cp)=
Specific Heat(Cv)=
Adiabatic Exponent Cp/Cv=
QualityVapor Quality=
 Compressibility Factor Compressibility Factor=
Helmholtz Energy Helmholtz Energy=
 Gibbs Free Energy Gibbs Free Energy=
Fugacity Coefficient Fugacity Coefficient=
Joule-Thomson Coefficient Joule-Thomson Coefficient =
Speed of SoundSpeed of Sound=
Virial Coefficient2nd Virial Coefficient =
3rd Virial Coefficient=
Thermal Conductivity Thermal Conductivity=
 thermal diffusivity Thermal Diffusivity=
Kinematic ViscosityKinematic Viscosity =
Dynamic ViscosityDynamic Viscosity =
Surface TensionSurface Tension =
Prandtl Number Prandtl Number=
Relative Dielectric ConstantRelative Dielectric Constant =

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