| The following table shows the standard states of various gases. (0℃，101325Pa) For density and air in the same condition Shows the specific density. The unit of density iskg･m-3＝10-3g･cm-3。 | ||||||
| gas | density | specific gravity | gas | density | specific gravity | |
|---|---|---|---|---|---|---|
| acetylene | 1.173 | 0.907 | water vapor (100℃) | 0.598 | 0.463 | |
| Argon | 1.784 | 1.380 | hydrogen | 0.0899 | 0.0695 | |
| ammonia | 0.771 | 0.597 | nitrogen | 1.250 | 0.967 | |
| Carbon monoxide | 1.250 | 0.967 | Sulfur dioxide (Sulfurous acid gas) | 2.926 | 2.264 | |
| Nitrous oxide (Nitrous oxide) | 1.978 | 1.530 | carbon dioxide | 1.977 | 1.529 | |
| Ethane | 1.356 | 1.049 | neon | 0.900 | 0.696 | |
| ethylene | 1.260 | 0.974 | Hydrogen arsenide (AsH3) | 3.50 | 2.71 | |
| Hydrogen chloride | 1.639 | 1.268 | Uranium hexafluoride (VI) | 4.68 | 3.62 | |
| chlorine | 3.214 | 2.486 | Fluorine | 1.696 | 1.312 | |
| ozone | 2.14 | 1.66 | Freon-12 | 5.083 | 3.931 | |
| xenon | 5.887 | 4.553 | propane | 2.02 | 1.56 | |
| air | 1.293 | 1 | helium | 0.1785 | 0.138 | |
| krypton | 3.739 | 2.891 | Phosphine | 1.531 | 1.184 | |
| Nitric oxide (NO) | 1.340 | 1.036 | methane | 0.717 | 0.555 | |
| oxygen | 1.429 | 1.105 | Hydrogen iodide | 5.789 | 4.477 | |
| cyan | 2.34 | 1.81 | radon | 9.73 | 7.53 | |
| Dimethyl ether | 2.108 | 1.630 | Hydrogen sulfide | 1.539 | 1.190 | |
| Hydrogen bromide | 3.644 | 2.818 | ||||
| References: "Chronological Scientific Tables" (National Astronomical Observatory of Japan, 2000 edition) Physical / Chemical Mechanical Properties 26 (450) Quoted from gas density. | ||||||