Abstract: A method for gas phase application of chlorine dioxide within an enclosed volume that includes the steps of: climatizing the enclosed volume to achieve a relative humidity (RH) in the range of about 5% to about 56%; generating chlorine dioxide gas; and introducing the chlorine dioxide gas under specified conditions of chlorine dioxide gas concentration and contact time, the specified conditions being effective to eliminate contaminants within the closed volume, and further to mitigate corrosion within the enclosed volume during the gas phase application.

Abstract: In a method for eliminating contaminants in gypsum wallboard that cause noxious sulfide odors, at least one gypsum wallboard surface within an enclosed volume is exposed to chlorine dioxide gas, wherein the chlorine dioxide gas is introduced into the enclosed volume under specified conditions of chlorine dioxide gas concentration and contact time that eliminate the noxious odor-causing contaminants, sulfate reducing or thiophilic bacteria in particular, contained in the gypsum wallboard.

Abstract: The invention provides methods of using chlorine dioxide gas for the fumigation of building spaces, heating ventilation and air conditioning systems (HVAC, e.g., return supply ducts, heating and cooling coils and the like), vehicles, office spaces, process equipment, files, documents, mail, mail processing equipment, industrial process equipment and consumer related items under safe conditions.