NA-SUL® rust and corrosion inhibitors exhibit superior salt fog performance compared to other sulfonate chemistries. Dinonylnaphthalene sulfonates are effective in a wide range of applications from general and indoor storage to harsh exterior applications. NA-SUL® corrosion inhibitors are effective on steel, galvanized steel, aluminum and various other metals. The NA-SUL® line provides excellent rust and corrosion protection in addition to other unique performance properties. King’s process of direct neutralization produces sulfonates with no chlorine, resulting in enhanced rust protection and resistance to staining.