This article shows how a new vapor pressure equation form allows practice of distillation applications at the elevated pressures more common to industry. The culmination of this article is a thermody...This article shows how a new vapor pressure equation form allows practice of distillation applications at the elevated pressures more common to industry. The culmination of this article is a thermodynamically consistent equation form that is valid between the atmospheric boiling point and the critical point, and which allows evaluation of other required distillation properties such as saturated phase densities and latent heat of vaporization.