Table 2 Relative narcotic strength of a number of gases [12,22]
From: Moving in extreme environments: inert gas narcosis and underwater activities
|  | Solubility in solvent at 37°C (mg/ml) |  | |
|---|---|---|---|
Gas | Water | Fat | Relative narcotic potency |
Helium (He) | 0.009 | 0.015 | 0.2 (least narcotic) |
Hydrogen (H2) | 0.017 | 0.036 | 0.6 |
Nitrogen (N2) | 0.013 | 0.067 | 1 |
Argon (Ar) | 0.027 | 0.140 | 2.3 |
Xenon (Xe) | 0.085 | 1.700 | 25.6 (most narcotic) |
Oxygen (O2) | 0.022 | 0.11 | 1.7 |
Carbon dioxide (CO2) | 0.838 | 1.34 | 20.0 |