Helium - 4 M.W. [1]

4.0026

N.B.P. [2]

4.224 K

T.P.

NA

4He Pc [2]

0.2275 MPa

Tc [2]

5.2 K

Vc [3]

0.057475 m3/kmol

T

K

Vapor Pressure

MPa

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% - 10% - 0.1% 0.1%
Reference - - [4] [4] [5] [5] [4] [4]
100 2.5 - 11.636 2.114 115.30 95.88 74.8 9.6
120 2.5 - 11.944 1.288 126.64 33.54 84.4 10.8
140 2.5 - 12.096 0.692 129.07 0.37 93.4 11.9
160 2.5 - 12.157 0.242 127.78 -18.31 102.1 13.0
180 2.5 - 12.165 -0.109 124.95 -29.15 110.4 14.1
200 2.5 - 12.138 -0.390 121.52 -35.51 118.5 15.1
225 2.5 - 12.076 -0.671 117.06 -39.80 128.2 16.4
250 2.5 - 11.993 -0.896 112.75 -41.76 137.7 17.6
273.15 2.5 - 11.906 -1.066 109.01 -42.36 146.2 18.7
275 2.5 - 11.899 -1.078 108.73 -42.37 146.9 18.8
300 2.5 - 11.798 -1.229 105.04 -42.22 155.9 19.9
325 2.5 - 11.695 -1.356 101.69 -41.60 164.6 21.0
350 2.5 - 11.590 -1.464 98.63 -40.73 173.2 22.1
375 2.5 - 11.486 -1.556 95.86 -39.71 181.6 23.2
400 2.5 - 11.383 -1.636 93.33 -38.62 189.9 24.3
450 2.5 - 11.182 -1.767 88.91 -36.39 206.0 26.3
500 2.5 - 10.990 -1.868 85.19 -34.23 221.7 28.3
600 2.5 - 10.636 -2.013 79.30 -30.38 251.9 32.2
700 2.5 - 10.318 -2.108 74.87 -27.18 280.9 35.9
800 2.5 - 10.032 -2.174 71.42 -24.52 308.9 39.5
900 2.5 - 9.773 -2.219 68.66 -22.31 336.1 43.0
1000 2.5 - 9.538 -2.251 66.41 -20.45 362.6 46.4
1200 2.5 - 9.124 -2.288 62.95 -17.51 413.9 52.9
1400 2.5 - 8.769 -2.306 60.43 -15.29 463.3 59.3
1600 2.5 - 8.461 -2.310 58.50 -13.57 511.3 65.4
1800 2.5 - 8.189 -2.308 56.99 -12.19 558.1 71.4
2000 2.5 - 7.946 -2.300 55.76 -11.06 603.9 77.3
2500 2.5 - 7.436 -2.271 53.53 -8.98 714.8 91.5
3000 2.5 - 7.025 -2.236 52.03 -7.56 821.9 105.2
3500 2.5 - 6.683 -2.200 50.95 -6.52 926.0 118.6
4000 2.5 - 6.392 -2.164 50.13 -5.74 1027.8 131.6
4500 2.5 - 6.139 -2.129 49.49 -5.12 1127.8 144.4
5000 2.5 - 5.916 -2.096 48.98 -4.62 1226.3 157.1
6000 2.5 - 5.540 -2.034 48.20 -3.87 1419.6 181.8
7000 2.5 - 5.230 -1.979 47.65 -3.33 1609.3 206.2
8000 2.5 - 4.969 -1.929 47.23 -2.92 1796.3 230.2
9000 2.5 - 4.745 -1.883 46.91 -2.60 1981.2 253.9
10000 2.5 - 4.549 -1.841 46.65 -2.35 2164.6 277.4

References:

  1. IUPAC; "Atomic Weights of the Elements 1993"; J. Phys. Chem. Ref. Data 1995, 24, 1561.
  2. C. Y. Ho, Y. S. Touloukian, "1981 Properties of Nonmetallic Fluid Elements", 1981, McGraw-Hill Book Co., New York
  3. "Selected Values of Properties of Chemical Compounds"; Data Project; Thermodynamics Research Center, Texas A&M University, College Station, Texas, 1980.
  4. J. J. Hurly and M. R. Moldover, "Ab Initio Values of the Thermophysical Properties of Helium as Standards", Submitted to J. Nist Res..
  5. J. J. Hurly, J. W. Schmidt, S. J. Boyes, M. R. Moldover, "Virial Equation of State of Helium, Xenon, and Helium-Xenon Mixtures from Speed-of-Sound and Burnett PT Measurements.", Int. J. Thermophys., 1997, 18, 579.

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