Hexafluroethane M.W. [1]

138.012

 N.B.P. [2]

194.95 K

 T.P.[3]

173.1 K

C2F6 Pc [4]

2.98 MPa

Tc [5]

292.8 K

 Vc [5]

0.22188 m3/kmol

T

K

 Vapor Pressure

kPa

 B(T)

cm3·mol-1

 dB/dT · T

cm3·mol-1

 C(T)

cm6·mol-2

 dC/dT · T

cm6·mol-2

mW/(m·K)

µPa·s

Estimated Uncertainty 1%/0.1% 1% Gas densities are calculated to better than 0.1% over the temperature and pressure ranges of the reference. 10% 10%/0.5%
Reference [6]/[7] [2,8,9] [7] [7] [7] [7] [10] [4,11]/[12]
170 8.90 21.78 -954.2 2352.7 -392157 3843692 - -
175 9.08 30.77 -888.8 2164.3 -294095 2960987 - 8.7
180 9.25 42.60 -830.1 1999.3 -220399 2299063 - 8.9
185 9.43 57.87 -777.4 1854.0 -164559 1797381 - 9.2
190 9.60 77.28 -729.7 1725.3 -121947 1413439 - 9.5
195 9.76 101.59 -686.4 1610.9 -89229 1116994 7.4 9.7
200 9.93 131.61 -646.9 1508.5 -63978 886255 7.7 10.0
205 10.09 168.24 -610.8 1416.6 -44407 705336 8.0 10.2
210 10.25 212.39 -577.7 1333.8 -29191 562532 8.2 10.5
215 10.41 265.06 -547.2 1258.9 -17334 449129 8.5 10.8
220 10.56 327.26 -519.0 1190.9 -8084 358581 8.8 11.0
225 10.72 400.05 -493.0 1128.9 -869 285925 9.1 11.0
230 10.87 484.51 -468.8 1072.3 4752 227370 9.4 11.2
235 11.02 581.75 -446.3 1020.4 9116 179997 9.7 11.5
240 11.17 692.88 -425.3 972.7 12488 141540 10.0 11.7
245 11.32 819.02 -405.7 928.7 15074 110231 10.3 11.9
250 11.46 961.29 -387.4 888.1 17035 84680 10.6 12.1
255 11.61 1120.81 -370.2 850.5 18499 63791 10.9 12.4
260 11.75 1298.69 -354.0 815.6 19567 46688 11.2 12.6
265 11.89 1496.00 -338.8 783.2 20318 32676 11.6 12.8
270 12.03 1713.84 -324.4 752.9 20819 21193 11.9 13.0
275 12.17 1953.23 -310.9 724.7 21119 11787 12.2 13.2
280 12.30 2215.22 -298.0 698.3 21260 4093 12.5 13.5
285 12.44 2500.79 -285.9 673.6 21275 -2187 12.8 13.7
290 12.57 2810.92 -274.4 650.4 21191 -7297 13.2 13.9
292.8 12.64 2995.66 -268.2 638.0 21109 -9723 13.4 14.0
295 12.70 - -263.5 628.5 21030 -11436 13.5 14.1
300 12.85 - -253.1 608.0 20808 -14769 13.8 14.3
305 12.97 - -243.2 588.6 20541 -17430 14.2 14.5
310 13.10 - -233.8 570.3 20240 -19532 14.5 14.7
315 13.23 - -224.8 553.0 19914 -21168 14.9 14.9
320 13.35 - -216.2 536.7 19571 -22414 15.2 15.1
340 13.83 - -185.5 479.2 18126 -24650 16.6 15.9
360 14.28 - -159.4 432.0 16719 -24290 18.1 16.7
380 14.71 - -137.2 392.7 15444 -22736 19.5 18.5
400 15.11 - -117.9 359.4 14329 -20697 21.0 19.3
420 15.48 - -101.1 331.0 13371 -18536 22.6 20.1
440 15.83 - -86.2 306.5 12558 -16431 24.2 21.0
460 16.16 - -73.1 285.2 11871 -14465 25.8 21.8
480 16.43 - -61.4 266.4 11294 -12672 27.4 22.6
500 16.71 - -50.8 249.8 10810 -11060 29.1 23.3
550 17.33 - -28.7 215.7 9919 -7759 33.5 25.2
600 17.85 - -11.1 189.3 9354 -5324 38.0 27.0
650 18.29 - 3.2 168.3 9002 -3533 42.7 28.7
700 18.66 - 15.0 151.3 8791 -2212 47.5 30.4
750 18.98 - 25.0 137.2 8673 -1233 52.6 32.0
800 19.25 - 33.4 125.3 8618 -505 57.8 33.6
850 19.48 - 40.7 115.1 8604 38 63.1 35.1
900 19.67 - 47.0 106.4 8619 443 68.6 36.6
950 19.85 - 52.6 98.7 8651 744 74.2 38.0
1000 20.00 - 57.5 92.0 8695 966 79.9 39.4

References:

  1. IUPAC; "Atomic Weights of the Elements 1993"; J. Phys. Chem. Ref. Data 1995, 24, 1561.
  2. "Selected Values of Properties of Chemical Compounds"; Data Project; Thermodynamics Research Center, Texas A&M University, College Station, Texas, 1980.
  3. E. F. Westrum .Jr., D. R. Stull, G. C. Sinke, "The Chemical Thermodynamics of Organic Compounds", John Wiley and Sons, New York, 1969.
  4. "Freon Products", E.I. DuPont de Nemours & Co., Inc., Freon Products Division, Wilmington, Delaware, 1969.
  5. B. J. Zwolinski, A. P. Kudchadker, G. H. Alani, "The Critical Constants of Organic Substances", Chem. Rev., 1968, 68, 659.
  6. M. Chase, "JANAF Thermochemical Table, Third Edition"; J. Phys. Chem. Ref. Data 1985, 14. Supplement No. 1.
  7. J. J. Hurly, "Thermophysical Properties of Gaseous CF4 and C2F6 from Speed-of-Sound Measurements, Int. J. Thermophys. 1999, 20, 455.
  8. O. Ruff, R. Keim, R., "Die Reaktions Produkte der Verschiedenen Kohlearten mit Fluor. I. Das Kohlenstoff-4-Fluorid (Tetrafluormethan)", Z. Anorg. Allg. Chem. 1930, 192, 249.
  9. E. Hala, V. Fried, T. Boublik, "The Vapour Pressures of Pure Substances", Elsevier, New York, 1973.
  10. A. A. Clifford, E. Dickinson, P. Gray, "Thermal Conductivities of Gaseous Alkane + Perfluoralkane Mixtures", J. Chem. Soc. Faraday Trans. I, 1976.
  11. D. Reichenberg, "The Viscosity of Organic Vapors at Low Pressures", DSC Rep. 11, National Physical Laboratory, Teddington, England, August 1971.
  12. J. J. Hurly, K. A. Gillis, J. B. Mehl, and M. R. Moldover, "The Viscosity of Seven Gases Measured with a Greenspan Viscometer," Int. J. Thermophys. (Accepted 2003).

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