No. Any proven “limited virucidal agent” is sufficient for reliably inactivating enveloped viruses such as SARS-CoV-2. Evidence based on test methods according to the German Association for the Control of Virus Diseases (DVV) or EN 14476 or EN 16 777 (for products without mechanical/spray disinfection) proves that these surface disinfectants reduce viruses by at least 4 log-10 units under the standard conditions that were tested. This means that out of 1 million virus particles, a maximum of 100 remain. The Robert Koch Institute also recommends using limited virucidal agents against COVID-19.
All marketable products that are labeled accordingly achieve the required effectiveness. The fact that the formulations and mixtures of active ingredients may be very different and also contain different concentrations of active ingredients does not make a difference to the effectiveness.
However, if pure active ingredient solutions are used instead of marketable products, certain concentrations have been identified as necessary. This has been shown by a review that evaluated 22 studies. These studies mainly used pure active ingredients in aqueous solution and no marketable products were used. None of the alcohols mentioned in the studies that were examined had a lower or medium active substance content, meaning no statement could be made about their effectiveness against coronaviruses.
With this in mind, the German research team came to the conclusion that when using pure active ingredient solutions, the following concentrations must be used in order to inactivate coronaviruses: Ethanol: 62–71%, hydrogen peroxide: 0.5% or sodium hypochlorite 0.1%. The studies showed that other agents such as 0.05–0.2% benzalkonium chloride or 0.02% chlorhexidine digluconate were less effective.
Conclusion: The review of the studies does not allow conclusions to be drawn about products on the market: Disinfectants available on the market are often have formulations that are much more complex than pure active ingredient solutions in water and are optimized for the individual usage conditions. For example, certain formulations may also contain small amounts of benzalkonium chloride and yet the product is still effective due to the entire formulation. Therefore, it’s not a specified active substance content that makes a marketable surface disinfectant suitable for inactivating SARS-CoV-2, but rather evidence of the limited virucidal agent documented by current test methods and standards.
Recommendations from the Robert Koch Institute on hygiene measures in the treatment and care of patients with a SARS-CoV-2 infection. As of 04/01/2020. https://www.rki.de/DE/Content/InfAZ/N/Neuartiges_Coronavirus/Hygiene.html (Last accessed on 04/07/2020)
Kampf G, Todt D, Pfaender S, Steinmann E: Persistence of coronaviruses on inanimate surfaces and its inactivation with biocidal agents. J Hosp Infect 104 (2020) pp 246-251. https://www.sciencedirect.com/science/article/pii/S0195670120300463?via%3Dihub (Last accessed on 04/07/2020)