A month ago I wrote that United Airlines was looking at spraying Z71 in its passenger cabins to sanitize them with a coating that would last up to a month, continuing to kill viruses.
American Airlines has jumped ahead, receiving approval to apply Alliance BioScience SurfaceWise 2 though only for use in airports in Texas and flights departing Texas. Apparently chemicals are safer in Texas.
The original SurfaceWise has been widely used across Texas hospitals as an anti-bacterial. It was also pre-registered with the EPA as a pesticide. The coating has been re-worked and inactivates 90% of viruses within 10 minutes, and nearly all within an hour. This will help not just with the novel coronavirus, where the primary transmission mechanism is respiratory droplets, but also common cold and flu.
SurfaceWise2′s active ingredient is quaternary ammonium,
The National Institutes of Health has designated quaternary ammonium as asthma-causing and irritable to eyes and skin, flammable and corrosive..Allied BioScience defended its product, saying it “has been demonstrated to have the lowest toxicity level measured by the EPA. It is nontoxic, nonallergenic and contains no volatile organic compounds.”
Since American Airlines only performs electrostatic spraying every 7 days a persistent chemical application is needed (in contrast to other airlines striving to spray between every flight). SurfaceWise 2 will kill viruses for at least a week.