Chlorine dioxide (ClO2) is widely recognized as a superior, powerful but selective, oxidizing agent and has been in commercial and industrial use for decades. It has received numerous registrations for many uses by the USEPA since 1947. Additional approvals for a variety of uses have been granted by the FDA and the USDA. Chlorine dioxide is well-recognized and used throughout the world.

Chlorine dioxide, unlike chlorine (Cl2) does not react with water or chlorinate organic compounds, consequently chlorinated organic compounds such as trihalomethanes (THM’s) and haloacetic acids (HAA’s) resulting from chlorine dioxide are not formed.

Chlorine dioxide gas is highly soluble in water, and remains a “true gas” while in an aqueous solution. Chlorine dioxide does not ionize to form weak acids in water consequently chlorine dioxide is effective across a broad pH range.

Chlorine dioxide gas is very effective at low concentrations and is environmentally friendly because it decomposes rapidly into salt and water and leaves no undesirable residues. It is often chosen over liquid disinfectants, hydrogen peroxide vapor, formaldehyde, ethylene oxide and other disinfectant technologies as the most effective means of disinfection with the least impact on the surroundings and on the environment.

It has also been shown to be exceptionally effective against biofilms, because the small ClO2 molecules penetrate the biofilm layers by molecular diffusion.

Chlorine dioxide micro-organism destruction is the result of ClO2 penetrating the organism’s cell membrane and disrupting metabolic functions leading to the inactivation of the microorganisms. This mode of destruction is highly effective using low doses of ClO2.

Of all the possible choices, chlorine dioxide was selected by the United States government to decontaminate the Hart Senate Office building and postal facilities suspected of anthrax contamination in 2001.

Recognized as effective for decades, chlorine dioxide is in use for many industrial applications. Chlorine dioxide was selected to decontaminate the Hart Senate Office building in 2001, suspected of anthrax contamination.


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