Dielectric Strength, Boiling Point and Toxicity of Gases - Different Aspects of the Same Basic Molecular Properties

For practical application of an insulating gas three different properties, i.e. the dielectric strength, the boiling point, and the toxicity are important. Based on semi-quantitative physical arguments and confirmed by known data of 41 gases, it is shown that these properties are related to two basic molecular characteristics, the polarizability α and the ionization potential εi. The relations found are helpful in determining general trends and estimating unknown data.