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API
2methylpropane Thermodynamic & Transport Properties (Based on Venus model)
CAS number
Name
Category
Pure/Mixture
Short Name
Full Name
Chemical Formula
Synonym
R600a ,Isobutane;2Methylpropane;1,1dimethylethane;isobutane;2methylpropane;trimethylmethane
Molecular Weight
g/mol
Triple Point Temperature
℃
K
°F
°R
Normal Boiling Point
℃
K
°F
°R
Critical Temperature
℃
K
°F
°R
Critical Pressure
MPa(absolute)
KPa(absolute)
Pa(absolute)
bar(absolute)
psi(absolute)
atm(absolute)
kg/cm2(absolute)
mmHg(Torr)(absolute)
inHg(absolute)
mmH2O(absolute)
inH2O(absolute)
ftH2O(absolute)
MPa(gauge)
KPa(gauge)
Pa(gauge)
bar(gauge)
psi(gauge)
atm(gauge)
kg/cm2(gauge)
mmHg(Torr)(gauge)
inHg(gauge)
mmH2O(gauge)
inH2O(gauge)
ftH2O(gauge)
Critical Density
kg/m3
g/cm3
lb/ft3
lb/in3
lb/gal
Critical Compress Factor
Acentric Factor
kJ/(kg·℃)
J/(kg·℃)
Btu/(lb°F)
Dipole Moment
Debye
Mixture Component
Composition:
2methylpropane : Introduction
Isobutane (ibutane), also known as methylpropane, is a chemical compound with molecular formula C4H10 and is an isomer of butane. It is the simplest alkane with a tertiary carbon. Concerns with depletion of the ozone layer by freon gases have led to increased use of isobutane as a gas for refrigeration systems, especially in domestic refrigerators and freezers, and as a propellant in aerosol sprays. When used as a refrigerant or a propellant, isobutane is also known as R600a. Some portable camp stoves use a mixture of isobutane with propane, usually 80:20. Isobutane is used as a feedstock in the petrochemical industry, for example in the synthesis of isooctane.
Single Value
Table
Temperature=
℃
K
°F
°R
Acceptable Range ：
< T <
Pressure=
MPa(absolute)
KPa(absolute)
Pa(absolute)
bar(absolute)
psi(absolute)
atm(absolute)
kg/cm2(absolute)
mmHg(Torr)(absolute)
inHg(absolute)
mmH2O(absolute)
inH2O(absolute)
ftH2O(absolute)
MPa(gauge)
KPa(gauge)
Pa(gauge)
bar(gauge)
psi(gauge)
atm(gauge)
kg/cm2(gauge)
mmHg(Torr)(gauge)
inHg(gauge)
mmH2O(gauge)
inH2O(gauge)
ftH2O(gauge)
< P <
Density=
kg/m3
g/cm3
lb/ft3
lb/in3
lb/gal
Specific Enthalpy=
kJ/kg
J/kg
Btu/lb
cal/g
Specific Entropy=
kJ/(kg·K)
J/(kg·K)
Btu/(lb°F)
cal/(g·K)
Internal Energy=
kJ/kg
J/kg
Btu/lb
cal/g
Reference
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2methylpropane :Thermodynamic & Transport Properties Calculated Result
State:
Molecular Weight=
g/mol
Temperature=
℃
K
°F
°R
Pressure=
MPa(absolute)
KPa(absolute)
Pa(absolute)
bar(absolute)
psi(absolute)
atm(absolute)
kg/cm2(absolute)
mmHg(Torr)(absolute)
inHg(absolute)
mmH2O(absolute)
inH2O(absolute)
ftH2O(absolute)
MPa(gauge)
KPa(gauge)
Pa(gauge)
bar(gauge)
psi(gauge)
atm(gauge)
kg/cm2(gauge)
mmHg(Torr)(gauge)
inHg(gauge)
mmH2O(gauge)
inH2O(gauge)
ftH2O(gauge)
Density=
kg/m3
g/cm3
lb/ft3
lb/in3
lb/gal
Specific Volume=
m3/kg
cm3/g
ft3/lb
in3/lb
gal/lb
Specific Enthalpy=
kJ/kg
J/kg
Btu/lb
cal/g
Specific Entropy=
kJ/(kg·K)
J/(kg·K)
Btu/(lb°F)
cal/(g·K)
Internal Energy=
kJ/kg
J/kg
Btu/lb
cal/g
Composition=
Saturated Vapor Pressure, Boiling Point(dew point), Latent Heat of Vaporization are saturated properties, just enter One parameter to calculate them!
Saturated Vapor Pressure=
MPa(absolute)
KPa(absolute)
Pa(absolute)
bar(absolute)
psi(absolute)
atm(absolute)
kg/cm2(absolute)
mmHg(Torr)(absolute)
inHg(absolute)
mmH2O(absolute)
inH2O(absolute)
ftH2O(absolute)
MPa(gauge)
KPa(gauge)
Pa(gauge)
bar(gauge)
psi(gauge)
atm(gauge)
kg/cm2(gauge)
mmHg(Torr)(gauge)
inHg(gauge)
mmH2O(gauge)
inH2O(gauge)
ftH2O(gauge)
Boiling Point (Dew Point)=
℃
K
°F
°R
Vaporization Latent Heat=
kJ/kg
J/kg
Btu/lb
cal/g
Specific Heat(Cp)=
kJ/(kg·K)
J/(kg·K)
Btu/(lb°F)
cal/(g·K)
Specific Heat(Cv)=
kJ/(kg·℃)
J/(kg·℃)
Btu/(lb°F)
cal/(g·K)
Cp/Cv=
Vapor Quality=
Compressibility Factor=
Helmholtz Energy=
kJ/kg
J/kg
Btu/lb
cal/g
Gibbs Free Energy=
kJ/kg
J/kg
Btu/lb
cal/g
Fugacity=
MPa
KPa
Pa
bar
psi
atm
kg/cm2
mmHg(Torr)
inHg
mmH2O
inH2O
ftH2O
Fugacity Coefficient=
JouleThomson Coefficient =
K/kPa
K/MPa
K/Pa
°C/bar
Speed of Sound=
m/s
ft/s
ft/min
km/h
mph
2nd Virial Coefficient =
m3/kg
cm3/g
ft3/lb
in3/lb
gal/lb
3rd Virial Coefficient=
(m3/kg)2
(cm3/g)2
(ft3/lb)2
(in3/lb)2
(gal/lb)2
Thermal Conductivity=
W/(m·K)
kcal/(m·h·℃)
Btu/(ft·h·°F)
Thermal Diffusivity=
m2/s
ft2/s
Kinematic Viscosity =
m2/s
St
ft2/s
Dynamic Viscosity =
Pa·s
P
lbf·s/ft2
kgf·s/m2
Surface Tension =
N/m
gf/cm
dyn/cm
erg/cm2
erg/mm2
lbf/in
Prandtl Number=
Relative Dielectric Constant =
Lower limit
Upper limit
Temperature =
℃
Pressure =
MPa(a)
Density =
kg/m
^{3}
Enthalpy =
kJ/kg
Entropy =
kJ/(kg·K)
Internal energy =
kJ/kg
Step ：
1
2
3
4
5
6
7
8
9
10
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L:Saturated liquid，V：Saturated gas
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