Van der Waals constants (data page)

Last updated

The following table lists the Van der Waals constants (from the Van der Waals equation) for a number of common gases and volatile liquids. [1]

To convert from to , multiply by 100.
To convert from to , divide by 10.
To convert from to , divide by 1000.

 a (L2bar/mol2)b (L/mol)
Acetic acid 17.70980.1065
Acetic anhydride 20.1580.1263
Acetone 16.020.1124
Acetonitrile 17.810.1168
Acetylene 4.5160.0522
Ammonia 4.2250.0371
Aniline [2] 29.140.1486
Argon 1.3550.03201
Benzene 18.240.1193
Bromobenzene 28.940.1539
Butane 14.660.1226
1-Butanol [2] 20.940.1326
2-Butanone [2] 19.970.1326
Carbon dioxide 3.60.04267
Carbon disulfide 11.770.07685
Carbon monoxide 1.5050.0398500
Carbon tetrachloride 19.74830.1281
Chlorine 6.5790.05622
Chlorobenzene 25.770.1453
Chloroethane 11.050.08651
Chloromethane 7.5700.06483
Cyanogen 7.7690.06901
Cyclohexane 23.110.1424
Cyclopropane [2] 8.340.0747
Decane [2] 52.740.3043
1-Decanol [2] 59.510.3086
Diethyl ether 17.610.1344
Diethyl sulfide 19.000.1214
Dimethyl ether 8.1800.07246
Dimethyl sulfide 13.040.09213
Dodecane [2] 69.380.3758
1-Dodecanol [2] 75.700.3750
Ethane 5.5620.0638
Ethanethiol 11.390.08098
Ethanol 12.180.08407
Ethyl acetate 20.720.1412
Ethylamine 10.740.08409
Ethylene [2] 4.6120.0582
Fluorine [2] 1.1710.0290
Fluorobenzene 20.190.1286
Fluoromethane 4.6920.05264
Freon 10.780.0998
Furan [2] 12.740.0926
Germanium tetrachloride 22.900.1485
Helium 0.03460.0238
Heptane [2] 31.060.2049
1-Heptanol [2] 38.170.2150
Hexane 24.710.1735
1-Hexanol [2] 31.790.1856
Hydrazine [2] 8.460.0462
Hydrogen 0.24760.02661
Hydrogen bromide 4.5100.04431
Hydrogen chloride 3.7160.04081
Hydrogen cyanide [2] 11.290.0881
Hydrogen fluoride [2] 9.5650.0739
Hydrogen iodide [2] 6.3090.0530
Hydrogen selenide 5.3380.04637
Hydrogen sulfide 4.4900.04287
Isobutane [2] 13.320.1164
Iodobenzene 33.520.1656
Krypton 2.3490.03978
Mercury 8.2000.01696
Methane 2.2530.04278
Methanol 9.6490.06702
Methylamine [2] 7.1060.0588
Neon 0.21350.01709
Neopentane [2] 17.170.1411
Nitric oxide 1.3580.02789
Nitrogen 1.3700.0387
Nitrogen dioxide 5.3540.04424
Nitrogen trifluoride [2] 3.580.0545
Nitrous oxide 3.8320.04415
Octane [2] 37.880.2374
1-Octanol [2] 44.710.2442
Oxygen 1.3820.03186
Ozone [2] 3.5700.0487
Pentane 19.260.146
1-Pentanol [2] 25.880.1568
Phenol [2] 22.930.1177
Phosphine 4.6920.05156
Propane 8.7790.08445
1-Propanol [2] 16.260.1079
2-Propanol [2] 15.820.1109
Propene [2] 8.4420.0824
Pyridine [2] 19.770.1137
Pyrrole [2] 18.820.1049
Radon 6.6010.06239
Silane 4.3770.05786
Silicon tetrafluoride 4.2510.05571
Sulfur dioxide 6.8030.05636
Sulfur hexafluoride [2] 7.8570.0879
Tetrachloromethane [2] 20.010.1281
Tetrachlorosilane [2] 20.960.1470
Tetrafluoroethylene [2] 6.9540.0809
Tetrafluoromethane [2] 4.0400.0633
Tetrafluorosilane [2] 5.2590.0724
Tetrahydrofuran [2] 16.390.1082
Tin tetrachloride 27.270.1642
Thiophene [2] 17.210.1058
Toluene 24.380.1463
1-1-1-Trichloroethane [2] 20.150.1317
Trichloromethane [2] 15.340.1019
Trifluoromethane [2] 5.3780.0640
Trimethylamine [2] 13.370.1101
Water 5.5360.03049
Xenon 4.2500.05105

Units

1 J·m3/mol2 = 1 m6·Pa/mol2 = 10 L2·bar/mol2

1 L2atm/mol2 = 0.101325 J·m3/mol2 = 0.101325 Pa·m6/mol2

1 dm3/mol = 1 L/mol = 1 m3/kmol = 0.001 m3/mol (where kmol is kilomoles = 1000 moles)

References

  1. R. C. Weast (1972). Handbook of Chemistry and Physics 53rd Edition. Chemical Rubber Pub.
  2. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 Edge, Engineers. "Van der Waals Constants for Gases". www.engineersedge.com. Retrieved 2023-04-12.