The inhibition of atmospheric corrosion of both ferrous and nonferrous metals demands the application of chemical compounds which posses high passivating properties, strong tendencies toward surface adsorption and the ability to form a comparatively strong and stable bond with a metal surface. The delicate and yet complex nature of atmospheric corrosion processes occurring under thin films of electrolyte preordains the transport mechanism of corrosion inhibitor which in order to become effective, must diffuse through the electrolyte film and cover the substantial portion of the surface. The precise parameters of the corrosion inhibiting mechanism are still unknown. It is believed that certain physical and chemical properties of the benevolent molecules are critically important, e.g., vapor pressure saturation levels, molecular structural characteristics, availability of reactive groups for surface physical or chemical binding, the polarity, the contamination; the resultant conductivity of the electrolyte, etc.