ODOR NEUTRALIZER
About Chlorine Dioxide

Because of the unique chemistry of Chlorine Dioxide (the active ingredient in the EXPEL odor elimination products) and our unique stabilizing system (95% effective after 4 years), EXPEL is probably the most powerful and environmentally safe odor neutralizer in common use.

EXPEL has an odd number of electrons and desperately seeks reactants that are electron donors.  This means that when chlorine dioxide reacts, it reacts only with electron donors, unlike chlorine and un-stabilized chlorine dioxide compounds that add or substitute a chlorine atom to the reactive substances.  This is where the term chlorination is derived.

Although EXPEL has a chlorine atom, its chemistry and properties make it completely different chemically, more akin to the chemical properties of oxygen than chlorine. EXPEL does not produce chlorinated compounds and regardless of concentration or contact time will immediately react with odor sources and their microorganism bases.

Chlorine Dioxide is an oxidizing biocide, like chlorine and ozone.  This means that it kills microorganisms by disruption of nutrients across the cell wall and not by disruption of the metabolic process.  Non-oxidizing biocides are metabolic toxins, which means, they kill microorganisms only when they are active.  As microorganisms spend a lot of their time in their dormant state much higher concentrations of chemicals must be use to kill them and effect a long-term control.  In addition, microorganisms develop resistance to metabolic toxins.  Bacteria cannot build a resistance to chlorine dioxide.

Ozone and chlorine are very reactive and will react with most organic compounds requiring larger doses to maintain a residual sufficient to kill microorganisms.  Chlorine dioxide, however, is much less reactive and reacts in the main only with reduced sulfur compounds, secondary and tertiary amines and other highly reduced organics.  Consequently, our profound effect on ammonium and hydrogen sulfide compounds.

Chlorine dioxide and its primary by-products chlorite and chlorate all break down to sodium chloride (simple salt) and does not form any toxic or carcinogenic chlorination by-products and no build-up of toxic organic or inorganic by-products like bromates.