D5#

References#

Equation of State#

M. Thol, M.A. Javed, E. Baumhoegger, R. Span, and J. Vrabec. Thermodynamic properties of dodecamethylpentasiloxane, tetradecamethylhexasiloxane, and decamethylcyclopentasiloxane. Fluid Phase Equilib., 2019.

Surface Tension#

A. Mulero and I. Cachadiña. Recommended Correlations for the Surface Tension of Several Fluids Included in the REFPROP Program. J. Phys. Chem. Ref. Data, 43:023104–1:8, 2014. doi:10.1063/1.4878755.

Aliases#

Decamethylcyclopentasiloxane, DECAMETHYLCYCLOPENTASILOXANE

Molecular Structure#

D5 — 3D conformer (interactive: click and drag to rotate)

Fluid Information#

Parameter, Value

General

Molar mass [kg/mol]

0.3707697

CAS number

541-02-6

ASHRAE class

UNKNOWN

Formula

C10H30O5Si5

Acentric factor

0.6309446376541072

InChI

InChI=1S/C10H30O5Si5/c1-16(2)11-17(3,4)13-19(7,8)15-20(9,10)14-18(5,6)12-16/h1-10H3

InChIKey

XMSXQFUHVRWGNA-UHFFFAOYSA-N

SMILES

C[Si]1(O[Si](O[Si](O[Si](O[Si](O1)(C)C)(C)C)(C)C)(C)C)C

ChemSpider ID

10451

Limits

Maximum temperature [K]

630.0

Maximum pressure [Pa]

120000000.0

Triple point

Triple point temperature [K]

226.0

Triple point pressure [Pa]

0.0020593212230361497

Critical point

Critical point temperature [K]

618.2999915047726

Critical point density [kg/m3]

300.34548427127584

Critical point density [mol/m3]

810.0594095776323

Critical point pressure [Pa]

1077687.6442667432

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/D5.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/D51.png

Flash consistency (HEOS): 82 inconsistent, 0 exceptions, 0 bad-phase across 11 input pair(s).

Download full failure list (CSV)

Failing state points (sample, up to 20 per pair/class)

Pair

Class

Region

P [Pa]

T [K]

In1

Val1

In2

Val2

Error

DmolarHmolar

INCONSISTENT

1phase

0.0941033

247.762

Dmolar

2719.77

Hmolar

-158611

DmolarHmolar

INCONSISTENT

1phase

0.335319

258.092

Dmolar

2688.98

Hmolar

-152149

DmolarHmolar

INCONSISTENT

1phase

0.177636

247.762

Dmolar

2719.77

Hmolar

-158611

DmolarHmolar

INCONSISTENT

1phase

0.026409

237.431

Dmolar

2750.93

Hmolar

-165070

DmolarP

INCONSISTENT

1phase

0.0039262

227.1

Dmolar

2782.49

P

0.00392712

DmolarP

INCONSISTENT

1phase

0.026409

237.431

Dmolar

2750.93

P

0.0263587

DmolarP

INCONSISTENT

1phase

0.026409

227.1

Dmolar

2782.49

P

0.0264098

DmolarP

INCONSISTENT

1phase

0.0941033

237.431

Dmolar

2750.93

P

0.0940527

DmolarP

INCONSISTENT

1phase

0.0498515

227.1

Dmolar

2782.49

P

0.0498528

DmolarP

INCONSISTENT

1phase

0.632972

258.092

Dmolar

2688.98

P

0.632078

DmolarP

INCONSISTENT

1phase

0.0941033

247.762

Dmolar

2719.77

P

0.0937654

DmolarP

INCONSISTENT

1phase

0.0139902

227.1

Dmolar

2782.49

P

0.013991

DmolarP

INCONSISTENT

1phase

0.177636

237.431

Dmolar

2750.93

P

0.177586

DmolarP

INCONSISTENT

1phase

0.177636

227.1

Dmolar

2782.49

P

0.177637

DmolarP

INCONSISTENT

1phase

0.0941033

227.1

Dmolar

2782.49

P

0.094103

DmolarP

INCONSISTENT

1phase

0.00741137

227.1

Dmolar

2782.49

P

0.00741182

DmolarP

INCONSISTENT

1phase

0.0498515

237.431

Dmolar

2750.93

P

0.0498013

DmolarP

INCONSISTENT

1phase

0.177636

247.762

Dmolar

2719.77

P

0.177299

DmolarP

INCONSISTENT

1phase

0.335319

247.762

Dmolar

2719.77

P

0.334982

DmolarP

INCONSISTENT

1phase

0.335319

258.092

Dmolar

2688.98

P

0.334424

DmolarP

INCONSISTENT

1phase

1.19484

268.423

Dmolar

2658.5

P

1.19484

DmolarSmolar

INCONSISTENT

1phase

0.0941033

247.762

Dmolar

2719.77

Smolar

-445.021

DmolarSmolar

INCONSISTENT

1phase

0.335319

258.092

Dmolar

2688.98

Smolar

-419.469

DmolarSmolar

INCONSISTENT

1phase

0.177636

247.762

Dmolar

2719.77

Smolar

-445.021

DmolarSmolar

INCONSISTENT

1phase

0.026409

237.431

Dmolar

2750.93

Smolar

-471.651

DmolarSmolar

INCONSISTENT

1phase

0.632972

258.092

Dmolar

2688.98

Smolar

-419.469

DmolarSmolar

INCONSISTENT

1phase

0.0498515

237.431

Dmolar

2750.93

Smolar

-471.651

DmolarSmolar

INCONSISTENT

1phase

0.335319

247.762

Dmolar

2719.77

Smolar

-445.021

DmolarT

INCONSISTENT

1phase

0.0941033

247.762

Dmolar

2719.77

T

247.762

DmolarT

INCONSISTENT

1phase

0.335319

258.092

Dmolar

2688.98

T

258.092

DmolarT

INCONSISTENT

1phase

0.177636

247.762

Dmolar

2719.77

T

247.762

DmolarT

INCONSISTENT

1phase

0.026409

237.431

Dmolar

2750.93

T

237.431

DmolarT

INCONSISTENT

1phase

0.632972

258.092

Dmolar

2688.98

T

258.092

DmolarT

INCONSISTENT

1phase

0.335319

247.762

Dmolar

2719.77

T

247.762

DmolarUmolar

INCONSISTENT

1phase

0.0941033

247.762

Dmolar

2719.77

Umolar

-158611

DmolarUmolar

INCONSISTENT

1phase

0.335319

258.092

Dmolar

2688.98

Umolar

-152149

DmolarUmolar

INCONSISTENT

1phase

0.177636

247.762

Dmolar

2719.77

Umolar

-158611

DmolarUmolar

INCONSISTENT

1phase

0.026409

237.431

Dmolar

2750.93

Umolar

-165070

DmolarUmolar

INCONSISTENT

1phase

0.632972

258.092

Dmolar

2688.98

Umolar

-152149

DmolarUmolar

INCONSISTENT

1phase

0.0498515

237.431

Dmolar

2750.93

Umolar

-165070

DmolarUmolar

INCONSISTENT

1phase

0.335319

247.762

Dmolar

2719.77

Umolar

-158611

HmolarP

INCONSISTENT

1phase

0.0941033

247.762

Hmolar

-158611

P

0.0937654

HmolarP

INCONSISTENT

1phase

0.335319

258.092

Hmolar

-152149

P

0.334424

HmolarP

INCONSISTENT

1phase

0.026409

237.431

Hmolar

-165070

P

0.0263587

HmolarP

INCONSISTENT

1phase

0.177636

247.762

Hmolar

-158611

P

0.177299

HmolarP

INCONSISTENT

1phase

0.632972

258.092

Hmolar

-152149

P

0.632078

HmolarP

INCONSISTENT

1phase

0.335319

247.762

Hmolar

-158611

P

0.334982

HmolarP

INCONSISTENT

1phase

0.0498515

237.431

Hmolar

-165070

P

0.0498013

HmolarSmolar

INCONSISTENT

2phase

0.00246353

227

Hmolar

-171597

Smolar

-499.765

PSmolar

INCONSISTENT

1phase

0.0941033

247.762

P

0.0937654

Smolar

-445.021

PSmolar

INCONSISTENT

1phase

0.335319

258.092

P

0.334424

Smolar

-419.469

PSmolar

INCONSISTENT

1phase

0.177636

247.762

P

0.177299

Smolar

-445.021

PSmolar

INCONSISTENT

1phase

0.026409

237.431

P

0.0263587

Smolar

-471.651

PSmolar

INCONSISTENT

1phase

0.632972

258.092

P

0.632078

Smolar

-419.469

PSmolar

INCONSISTENT

1phase

0.0498515

237.431

P

0.0498013

Smolar

-471.651

PSmolar

INCONSISTENT

1phase

0.335319

247.762

P

0.334982

Smolar

-445.021

PT

INCONSISTENT

1phase

0.0941033

247.762

P

0.0937654

T

247.762

PT

INCONSISTENT

1phase

0.335319

258.092

P

0.334424

T

258.092

PT

INCONSISTENT

1phase

0.026409

237.431

P

0.0263587

T

237.431

PT

INCONSISTENT

1phase

0.177636

247.762

P

0.177299

T

247.762

PT

INCONSISTENT

1phase

0.632972

258.092

P

0.632078

T

258.092

PT

INCONSISTENT

1phase

0.335319

247.762

P

0.334982

T

247.762

PUmolar

INCONSISTENT

1phase

0.0941033

247.762

P

0.0937654

Umolar

-158611

PUmolar

INCONSISTENT

1phase

0.335319

258.092

P

0.334424

Umolar

-152149

PUmolar

INCONSISTENT

1phase

0.026409

237.431

P

0.0263587

Umolar

-165070

PUmolar

INCONSISTENT

1phase

0.177636

247.762

P

0.177299

Umolar

-158611

PUmolar

INCONSISTENT

1phase

0.632972

258.092

P

0.632078

Umolar

-152149

PUmolar

INCONSISTENT

1phase

0.0498515

237.431

P

0.0498013

Umolar

-165070

PUmolar

INCONSISTENT

1phase

0.335319

247.762

P

0.334982

Umolar

-158611

SmolarT

INCONSISTENT

1phase

0.0498515

237.431

Smolar

-471.651

T

237.431

SmolarT

INCONSISTENT

1phase

0.0941033

247.762

Smolar

-445.021

T

247.762

SmolarT

INCONSISTENT

1phase

0.026409

237.431

Smolar

-471.651

T

237.431

SmolarT

INCONSISTENT

1phase

0.00207991

630

Smolar

413.156

T

630

SmolarT

INCONSISTENT

1phase

0.00207991

619.669

Smolar

401.141

T

619.669

SmolarT

INCONSISTENT

1phase

0.632972

227.1

Smolar

-499.489

T

227.1

SmolarT

INCONSISTENT

1phase

0.335319

227.1

Smolar

-499.489

T

227.1

SmolarT

INCONSISTENT

1phase

0.177636

227.1

Smolar

-499.489

T

227.1

SmolarT

INCONSISTENT

1phase

0.0941033

227.1

Smolar

-499.489

T

227.1

SmolarT

INCONSISTENT

1phase

0.0498515

227.1

Smolar

-499.489

T

227.1

SmolarT

INCONSISTENT

1phase

0.026409

227.1

Smolar

-499.489

T

227.1

SmolarT

INCONSISTENT

1phase

0.0139902

227.1

Smolar

-499.489

T

227.1

SmolarT

INCONSISTENT

1phase

0.00741137

227.1

Smolar

-499.489

T

227.1

Superancillary Plots#

The following figure shows the accuracy of the superancillary functions relative to extended precision calculations carried out in C++ with the teqp library. The results of the iterative calculations with REFPROP and CoolProp are also shown.

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/D52.png