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25
Gas
Number
Short Form Long Form
Viscosity*
25 deg C
14.696 PSIA
Density**
25 deg C
14.696 PSIA
Compressibility
25 deg C
14.696 PSIA
0 Air Air 184.918 1.1840 0.9997
1 Ar Argon 225.593 1.6339 0.9994
2 CH4 Methane 111.852 0.6569 0.9982
3 CO Carbon Monoxide 176.473 1.1453 0.9997
4 CO2 Carbon Dioxide 149.332 1.8080 0.9949
5 C2H6 Ethane 93.540 1.2385 0.9924
6 H2 Hydrogen 89.153 0.08235 1.0006
7 He Helium 198.457 0.16353 1.0005
8 N2 Nitrogen 178.120 1.1453 0.9998
9 N2O Nitrous Oxide 148.456 1.8088 0.9946
10 Ne Neon 311.149 0.8246 1.0005
11 O2 Oxygen 204.591 1.3088 0.9994
12 C3H8 Propane 81.458 1.8316 0.9841
13 n-C4H10 normal-Butane 74.052 2.4494 0.9699
14 C2H2 Acetylene 104.448 1.0720 0.9928
15 C2H4 Ethylene 103.177 1.1533 0.9943
16 i-C4H10 iso-Butane 74.988 2.4403 0.9728
17 Kr Krypton 251.342 3.4274 0.9994
18 Xe Xenon 229.785 5.3954 0.9947
19 SF6 Sulfur Hexauoride 153.532 6.0380 0.9887
20 C-25 75% Argon / 25% CO2 205.615 1.6766 0.9987
21 C-10 90% Argon / 10% CO2 217.529 1.6509 0.9991
22 C-8 92% Argon / 8% CO2 219.134 1.6475 0.9992
23 C-2 98% Argon / 2% CO2 223.973 1.6373 0.9993
24 C-75 75% CO2 / 25% Argon 167.451 1.7634 0.9966
25 A-75 75% Argon / 25% Helium 230.998 1.2660 0.9997
26 A-25 75% Helium / 25% Argon 234.306 0.5306 1.0002
27 A1025
90% Helium / 7.5% Argon /
2.5% CO2
(Praxair - Helistar® A1025)
214.840 0.3146 1.0003
28 Star29
90% Argon / 8% CO2
/ 2% Oxygen
(Praxair - Stargon® CS)
218.817 1.6410 0.9992
29 P-5 95% Argon / 5% Methane 223.483 1.5850 0.9993
*in micropoise (1 Poise = gram / (cm) (sec)) ** Grams/Liter (NIST REFPROP 7 database)
Gas Viscosities, Densities and Compressibilities at 25
o
C