****!!!!**** (1943) {Note: Air sanitizers using glycol can be easily registered with EPA using basic data. Other substances require more data submission.} "The killing process was found to be more effective when both the total number of air-borne droplets and the number of organisms in the bacterial suspension are small. A temperature below 80°F. and an atmospheric relative humidity between 45 and 70 per cent were found to constitute the most favorable conditions for the lethal action of the vapor. Experiments were performed to test the bactericidal efficiency of propylene glycol vapor in both small and large enclosed spaces. These studies revealed that equally marked bactericidal action is obtained when propylene glycol is dispersed in an 800 cubic foot room as occurs in chambers of 2 cubic foot capacity. The susceptibility to vapor action of bacteria re-suspended in saliva was just as great as when broth was used as the suspending medium. Both partially and completely dehydrated bacteria also succumbed to the effects of the vapor. However, when unsterile dust collected from inhabited rooms was dispersed into the air, little reduction of the natural microbic population contained in this material was observed."

****!!!!**** {Instructions for preparing solutions} "Method I produces a material equivalent to that produced by most commercial chlorine dioxide generators. Method II produces a reagent grade, chlorine dioxide solution with no free chlorine and is used for instrument standards and for studies where free chlorine would interfere." "to prepare low concentration (1000 ppm), chemically pure, chlorine dioxide solutions... Chlorine dioxide (ClO2) is produced by the acidification of sodium chlorite (NaClO2) solution with sulfuric acid (H2SO4): 4NaClO2 + 2H2SO4 ---- 2ClO2 + HCl + HClO3 + 2Na2SO4 + H2O Chlorine dioxide is removed from the reaction flask solution as gas by air stripping, purified by scrubbing with sodium chlorite solution and recovered by absorbing in chilled deionized (DI) water."

2003. Appendix B: "CT VALUES* FOR 4-LOG INACTIVATION OF VIRUSES BY CHLORINE DIOXIDE pH 6-9" "CT VALUES* FOR 3-LOG INACTIVATION OF GIARDIA CYSTS BY CHLORINE DIOXIDE"

{Note: Appropriate concentrations to use need to be verified) Disinfecting with sodium hypochlorite: "Based on the EPA List N: Disinfectants for Use Against SARS-CoV-2 products, 2500 ppm (0.25%) for 5 minutes is effective. Most readily available bleach is approximately 6% so 2/3 cup of bleach per gallon of cold tap water (1:24 dilution) for 5 minutes is appropriate." "If a lower concentration of bleach is desired, the EPA standard disinfection rate for hypochlorite products is 600 ppm for 10 minutes."

{ists references to all Gov regulatory info sources re. SC and CD}{includes % & ingredients of tech-grade and various other SC products} "Sodium chlorite is available in both dry and liquid forms. The dry forms contain approximately 80% Sodium chlorite and the solutions range from 7.5% to 40% sodium chlorite."

{Includes drawbacks of sodium hypochlorite.} "Otherwise, use products that are approved by the EPA for use against the virus that causes COVID-19 **and that are suitable for porous surfaces.**"