Density of Different Gases

The density of gases refers to the amount of mass per unit volume in a gas. Unlike solids and liquids, gases have a lower density because their molecules are typically more spread out and have higher kinetic energy, causing them to occupy a larger volume.

The table below presents a comprehensive compilation of density values for various gases measured at 0°C (32°F) and 1 atmospheric (atm) pressure. (1 atm = 101,325 Pa)

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Density of Gases
Acetylene1.1747
Air1.2931
Ammonia0.7067
Argon1.7841
Arsine3.2430
Butadiene2.4133
Butane2.5932
1-Butene2.7200
Carbon dioxide1.9635
Carbon monoxide1.2497
Carbonyl sulfide2.5400
Chlorine3.1635
Chloroethane2.8784
Chloromethane2.2525
Deuterium0.0899
Diborane1.2345
Dichlorosilane4.5065
Dimethylamine2.0115
Dimethyl ether2.0554
Ethane1.3416
Ethylene1.2516
Fluorine1.6953
Helium0.1786
Hydrogen0.0899
Hydrogen bromide3.3300
Hydrogen chloride1.5000
Hydrogen cyanide1.0992
Hydrogen fluoride0.8926
Hydrogen iodide4.4600
Hydrogen sulfide1.4060
Isobutane2.5932
Isobutylene2.5033
Krypton3.7387
Methane0.7158
Neon0.9003
Nitric oxide1.2700
Nitrogen1.2498
Nitrogen dioxide2.0526
Nitrous oxide1.9637
Oxygen1.4277
Ozone2.1415
Phosgene4.4132
Phosphine1.5168
Propadiene1.4150
Propane1.9674
Propylene1.8775
Radon9.0740
Silane1.4329
Sulfur Dioxide2.8583
Sulfur hexafluoride6.5164
Sulfur trioxide3.5721
Tungsten hexafluoride11.110
Xenon5.8578

The density of gases can vary depending on the gas’s temperature, pressure, and other factors.

Related Tables
References: 1) Cardarelli, François. Materials Handbook: A Concise Desktop Reference. Switzerland: Springer International Publishing, 2018. 2) CRC Handbook of Chemistry and Physics, 97th Edition. United Kingdom: CRC Press, 2016-2017. 3) A.M. Howatson, P.G. Lun, J.D. Todd, P.D. Engineering Tables and Data. United Kingdom: University of Oxford, Department of Engineering Science, 2009.