Abstract
The corrosiveness of 2% RST (chlorine-releasing disinfectant cleaner consisting mainly of potassium peroxymonosulfate) on the surface materials used in hospital facilities compared with 1% sodium hypochlorite and 75% ethanol. Static immersion tests were performed on specimens of six resins (polypropyrene, polycarbonate, polystylene, acrylic resin, latex rubber, silicon rubber) and three metals (copper, stainless steel, aluminum). Copper was discolored and lost its luster one day after immersion in 2% RST solution, and aluminum was discolored and lost its luster 2 days after immersion. No changes were observed in stainless steel and resin materials 7 days after immersion in 0.1% NaOCl solution, whereas stainless steel, copper and aluminum were significantly corroded one day after immersion. Acrylic resin was clouded one day after immersion in EtOH and had gained weight 7 days later. Our findings show that 2% RST solution is less corrosive to stainless steel than 0.1% NaOCl, and less damaging to acrylic resin than EtOH. Therefore, RST is considered to be the least damaging disinfectant cleaner for the daily hygiene management of environmental surfaces.
