Isopentane

References

Equation of State

E.W. Lemmon and R. Span. Short Fundamental Equations of State for 20 Industrial Fluids. J. Chem. Eng. Data, 51:785–850, 2006. doi:10.1021/je050186n.

Thermal Conductivity

C-M Vassiliou, MJ Assael, ML Huber, and RA Perkins. Reference Correlations of the Thermal Conductivity of Cyclopentane, iso-Pentane, and n-Pentane. Journal of Physical and Chemical Reference Data, 44(3):033102, 2015.

Viscosity

Ting Horng Chung, Mohammad Ajlan, Lloyd L Lee, and Kenneth E Starling. Generalized multiparameter correlation for nonpolar and polar fluid transport properties. Ind. Eng. Chem. Res., 27(4):671–679, 1988. doi:10.1021/ie00076a024.

Melting Line

Larry E. Reeves, Gene J. Scott, and Stanley E. Babb Jr. Melting Curves of Pressure Transmitting Fluids. J. Chem. Phys., 40:3662–3666, 1964. doi:10.1063/1.1725068.

Surface Tension

A. Mulero, I. Cachadiña, and M. I. Parra. Recommended Correlations for the Surface Tension of Common Fluids. J. Phys. Chem. Ref. Data, 41(4):043105–1:13, 2012. doi:10.1063/1.4768782.

Aliases

ipentane, R601a, ISOPENTANE, IPENTANE

Fluid Information

Parameter, Value  
General  
Molar mass [kg/mol] 0.07214878
CAS number 78-78-4
ASHRAE class A3
Formula \(C_{5}H_{12}\)
Acentric factor 0.2274
InChI InChI=1/C5H12/c1-4-5(2)3/h5H,4H2,1-3H3
InChIKey QWTDNUCVQCZILF-UHFFFAOYAE
SMILES CCC(C)C
ChemSpider ID 6308
2D image http://www.chemspider.com/ImagesHandler.ashx?id=6308
Limits  
Maximum temperature [K] 500.0
Maximum pressure [Pa] 1000000000.0
Triple point  
Triple point temperature [K] 112.65
Triple point pressure [Pa] None
Critical point  
Critical point temperature [K] 460.35
Critical point density [kg/m3] 235.99865938
Critical point density [mol/m3] 3271.0
Critical point pressure [Pa] 3378000.0
   

REFPROP Validation Data

Note

This figure compares the results generated from CoolProp and those generated from REFPROP. They are all results obtained in the form \(Y(T,\rho)\), where \(Y\) is the parameter of interest and which for all EOS is a direct evaluation of the EOS

You can download the script that generated the following figure here: (link to script), right-click the link and then save as... or the equivalent in your browser. You can also download this figure as a PDF.

../../_images/Isopentane.png

Consistency Plots

The following figure shows all the flash routines that are available for this fluid. A red + is a failure of the flash routine, a black dot is a success. Hopefully you will only see black dots. The red curve is the maximum temperature curve, and the blue curve is the melting line if one is available for the fluid.

In this figure, we start off with a state point given by T,P and then we calculate each of the other possible output pairs in turn, and then try to re-calculate T,P from the new input pair. If we don’t arrive back at the original T,P values, there is a problem in the flash routine in CoolProp. For more information on how these figures were generated, see CoolProp.Plots.ConsistencyPlots

Note

You can download the script that generated the following figure here: (link to script), right-click the link and then save as... or the equivalent in your browser. You can also download this figure as a PDF.

../../_images/Isopentane1.png