Characteristic feature of xenon is its fairly high boiling point as compared to krypton under normal atmospheric pressure –108°С (165 K). Xenon liquefies below the critical temperature of 17°С (290 К). Pressure in the cylinder depends on ambient temperature and equals 20…58 Bar.
| 99.999% Xenon | Xe | ppm |
| Hydrogen | H2 | 0.5 |
| Nitrogen | N2 | 2.0 |
| Oxygen | O2 | 0.5 |
| Argon | Ar | 0.1 |
| Krypton | Kr | 1.0 |
| Carbon Oxides | CO+CO2 | 0.5 |
| Humidity | H2O | 1.0 |
| Hydrocarbons | CnHm | 0.5 |
| Fluorides | CF4+C2F6+SF6 | 0.5 |