D7 is superior to other products for disinfection of SARS-CoV-2.
Why is D7 your best solution in the fight against SARS-CoV-2 (COVID-19)?
The primary reason is that, in real world applications, SARS-CoV-2 does not exist alone. When airborne, SARS-CoV-2 is almost always surrounded/protected by bodily fluids (ie: saliva, nasal mucous, etc.) which makes it very persistent in the environment. When it lands on a surface, the situation gets even worse, because SARS-CoV-2 also becomes protected by organic material and soil on those surfaces. In addition, the genetic material in the SARS-CoV-2 virus is surrounded by an oily material known as a lipid envelope.
The detergents and mild solvents in D7 cut through the bodily fluids, soil/organic material, and lipid envelope, so that the activated hydrogen peroxide in D7 can reach and destroy the virus. Many other disinfectants are repelled or inactivated by the bodily fluids, soil/organic material, and lipid envelope surrounding SARS-CoV-2, never actually coming in contact with the virus itself – so it survives.
Many of these other disinfectants may pass laboratory tests against viruses in artificial conditions, but fail in real-world applications. For example, 10% chlorine bleach achieves high efficacy against pathogens in laboratory tests, but often fails in the field because it does not penetrate organic matter.
The superior action of D7 in the presence of organic materials is illustrated in the figure below (note that the actual SARS-CoV-2 virus is even more complex than what is shown in the figure and contains a virus protein coat [i.e. capsid] making it even more important to use a disinfectant such as D7 to penetrate this coat and reach the RNA).
The detergency and low surface tension in D7 allows it to penetrate organic matter and bodily fluids to reach and destroy the SARS-CoV-2 virus.
"Detergency is the process of cleaning without solvents. A detergent removes contaminants from a surface by solubilizing, suspending, or emulsifing them. The detergency process is surprisingly complex.Good detergency requires the synergism of many simultaneous processes." - SURFACTANT ASSOCIATES, INC.
D7is currently being extensively used world-wide to combat COVID-19 with excellent results. Over 1000 tons of D7 have been used in medical facilities and other facilities in China and other countries in the last two months to successfully disinfect the SARS-CoV-2 virus. According to medical personnel in China, it is the only disinfectant that seems to work against SARS-CoV-2. It is also being successfully used for disinfection operations in virtually every other country with significant numbers of COVID-19 cases and also in countries without many cases, where disinfection operations have been stepped up to prevent the spread of the virus.
Another reason why D7 is a superior disinfectant for SARS-CoV-2 is that it has very high efficacy against a large spectrum of pathogens, including SARS-CoV-2. Efficacy in disinfectants is measured by log kill as shown in Table 1 below:
|Log 10 Kill||Percent Kill (%)||Remaining Virus|
(from original 10,000,000 present)
|3||99.9||10,000||Ethyl Alcohol, Quats, Cl2|
|7||99.99999||1 (effectively zero)||Decon7|
*Note that the efficacy estimates are not intended to include all disinfectants but only examples of low efficacy and high efficacy products.
REMAINING VIRUS FROM ORIGINAL 10,000,000 PRESENT
D7 contains surfactants, mild solvents, inorganic salts, a low concentration of hydrogen peroxide (~3.5%), a hydrogen peroxide activator, and water. The surfactants soften the cell walls of pathogens which allows the activated peroxide to penetrate to the interior for complete kill. This unique combination of mild ingredients works synergistically to kill persistent biological pathogens which has been demonstrated in testing at government and private facilities and in many field applications – outperforming formulations that contain much harsher chemicals. D7 is registered by the U.S. Environmental Protection Agency (US EPA) for many pathogens such as Listeria, E. coli, Staphylococcus, Salmonella, Norovirus, the Porcine Epidemic Diarrhea Virus, Staph and Pseudomonas biofilms, Avian Influenza viruses as well as Emerging Viral Pathogens.
Unfortunately, many government organizations and others are promoting the use of widely available, but low efficacy disinfectants, in the battle against COVID-19. For example, most hand sanitizers use ethyl alcohol as their primary disinfecting ingredient. Other products may only contain quaternary ammonium compounds (i.e., quats) that also have relatively low efficacy. Using these types of disinfectants may present a significant problem, because the large number of SARS-CoV-2 viruses deposited on a surface from the cough or sneeze of an infected person may overwhelm these low efficacy disinfectants leaving infectious viruses behind, even after disinfection operations.
Recent research (Pan et al., Viral Load of SARS-CoV-2 in clinical samples, The Lancet, 20:4 [pp. 411-412], February 24, 2020) has shown that COVID-19 patients may have very high levels of SARS-CoV-2 viruses (ie: viral load) in their upper respiratory system that could be expelled during a cough or sneeze. The sizes of a droplet expelled during a sneeze varies from <10 µm to as large as 1000 µm (Han et al., Characterizations of particle size distribution of the droplets exhaled by sneeze, Journal of the Royal Society, 10:88, November 6, 2013). Based on the data from these two studies, the number of SARS-CoV-2 viruses expelled during a sneeze from larger sized droplets (ie: droplets that are likely to land on a surface) and the associated results of low efficacy vs. high efficacy disinfectants under various conditions (ie: best case vs. worst case scenarios) are summarized in the table below:
|Viral load in the upper respiratory tract of a COVID-19 patient||106/ml||109/ml||1010/ml|
|Sneeze Droplet Size||200 µm||500 µm||800 µm|
|Sneeze Droplet Volume||4.2 x 10-6 ml||6.5 x 10-5 ml||2.7 x 10-4 ml|
|Viral load in a single sneeze droplet
from the respiratory tract |
that may land on a surface
|Remaining SARS-CoV-2 viruses in the
single sneeze droplet|
after disinfection with Ethyl Alcohol (99.9% efficacy)
|Remaining SARS-CoV-2 viruses in the single sneeze droplet|
after disinfection with D7 (99.99999% efficacy)
As can be seen above, use of low efficacy disinfectants (such asethyl alcohol or quats alone) may leave infectious SARS-CoV-2 viruses on the surface which can lead to the possibility of new infections in people that come in contact with these surfaces or fomite transport (i.e., transport on shoes, clothing, equipment, etc.) to other surfaces and areas. The situation is likely worse than shown here because, as noted above, disinfectants utilizing ethyl alcohol (as well as those containing chlorine bleach) may not even achieve their maximum efficacy in the field, because of the presence of bodily fluids and other organic matter.