Facts and Misconceptions


Many documents in the public domain indicate chlorine dioxide (ClO2) is quite corrosive to metals, especially soft metals and this is true to some limited extent. Constant exposures to high concentrations of chlorine dioxide will corrode copper pipes and attack brass and non alloys of aluminum. Most if not all common materials show no adverse reactions to use concentrations of ClO2 over time.  The chlorine dioxide potential for corrosion is much less due to its lower oxidation potential and its lower use concentrations over chlorine and other oxiders.  A certain competitor chloride dioxide company uses in excess of 3000 PPM in its process and it has been reported that electrical wiring has corroded at this high level.  DeepReach Oxidation's ability to use it application equipment and sensor to monitor and control the dosing of ClO2 assures that NO CORROSIVE or detrimental effect occurs on sensitive material.  At our 250 PPM upper application level, all building surfaces and contents are safe.


Perceived Hazards

A common misconception about chlorine dioxide is that it is highly explosive and posses a great danger when in use. Liquid use solutions (2 PPM - 2000 PPM) have none of these characteristics.  It is true that  dry gas can spontaneously detonate in very high concentrations of 10% to 12% (120,000 PPM) in a confined space such as a pipe end.  The DeepReach process is controlled and for applications of mold, odor and allergen ellimination does not go over 250 PPM.   For this reason, the process is completely safe.


Synergism of EPA Guidelines / ClO2 gas fumigation / Industrial Hygenists 

The role of the industrial hygenist working with facility managers is a most important one.  Since our application technology and label came into commercial use AFTER the IH association's 2005 white paper on fumigation, there has been some confusion on the applicatability of gas fumigation in mold remediation.  DRO is in the process of working with leading IH consultants in bringing forth a new white paper recognizing the superior mold remediation achieved when incorporating fumigation.  In the meantime, we are eager to discuss the techincal aspects with any industrial hygenist seeking to help their clients achieve superior and cost effective results. 

To clear any confusion, it is clearly and specifically noted on the DRO 5000 label multiple EPA approved uses for fumigation applications. In Section 1.0, the process is used " to retard or inhibit growth of bacteria and fungi including mold and mildew on floors, walls, contents and other interior building surfaces until such time as the cause of such growth can be identified and corrected". It is also used to control odors within spaces, and  DRO5000 can also be used as a component in a comprehensive mold and/or water damage restoration program. This section also indicates an extremely wide range of surfaces and materials in which DRO5000 can be utilized. Section 2.1 focuses on pre-cleaning techniques used on various materials. It is perfectly clear that pre-cleaning and mold identification and removal is an integral part of the DRO5000 process. The DRO5000 label is the most comprehensive and detailed registration currently on the books with USEPA. It is generally regarded as the Standard for fumigation applications within a structure for antimicrobial use.  

The addition of a fumigation step to mold abatement generates a number of significant advantages. The costs of mold remediation are high, primarily due to the expense associated with the man-hours required for the demolition and reconstruction of the interior of these contaminated structures, the replacement of the HVAC systems, and the extensive down times involved in the completion of the projects. By employing  a selected demolition strategy in conjunction with pre-cleaning and fumigation, man-hours are significantly reduced, time to completion is dramatically cut and project costs are minimized.

DRO meets and exceeds the goals of the IH and the facility manager.   Call us today to discuss your project.