Viscosity of dilute gases and vapours of polyatomic molecules

Abstract

A treatment of the “Viscosity of Dilute Gases and Vapors”, published in 1976, superimposed upon a single line the viscosities of Ne, Ar, CH₄, CO₂, C₃H₈, Br₂ and n-C₄H₁₀ over ranges of temperature. This paper correlates by the same method the viscosities of 28 gases and vapours including some as polyatomic as normal octane, ethyl acetate, toluene, and stannic bromide.

A relation is presented between heat capacities and the key parameters in the equation for viscosities of polyatomic vapours; the points for those with tetrahedral molecules fall upon one line; those with linear flexible molecules fall upon another.