A Leading Sodium Chlorate Supplier

International Dioxcide manufactures a proprietary mixture of sodium chlorate and hydrogen peroxide, which is used to produce chlorine dioxide for biocidal and oxidative water treatment applications. Our parent company, ERCO Worldwide, is one of the largest global producers of sodium chlorate used for large-scale pulp bleaching.

Superior Products

International Dioxcide’s sodium chlorate products – sold under the PurDOX™ brand – offer a proprietary blend of sodium chlorate and hydrogen peroxide that efficiently produces chlorine dioxide when combined with the proper grade of sulfuric acid.

  • PurDOX™ – a proven solution for oxidative and odor control applications
  • PurDOX™ BCD – an EPA approved biocidal solution (NEW)

Our premium grade chemicals carry EPA-registered labels and are ANSI/NSF 60 certified. As a Responsible Care® company, International Dioxcide meets the strictest health, safety and security standards set forth by the American Chemistry Council.

A Fast and Reliable Bulk Supplier

Our two PurDOX™ sodium chlorate production facilities, along with our extensive distribution network, ensures a reliable supply of PurDOX chemical.

Our sodium chlorate options include:

  • 275-Gallon Intermediate Bulk Containers (IBCs)
  • Tank Wagon quantities (maximum 45,000 lbs.)


International Dioxcide, a division of ERCO Worldwide, is based in North Kingstown, Rhode Island. We also have several distribution facilities positioned strategically throughout the U.S. and Canada for timely and efficient delivery of chemical solutions and equipment.

international dioxcide map of locations and distribution facilities

Unmatched Expertise

As part of our Responsible Care certification, our engineers and staff undergo rigorous in-house safety and environmental training to abide by all OSHA regulations and help make your chlorine dioxide experience safe, sustainable, and successful. We offer more than 70 years of chlorine dioxide chemical, equipment, application, regulatory and safety experience, which is unmatched in the industry.

Bottom line: Our focus on safety helps ensure that the supplied sodium chlorite chemical and chlorine dioxide equipment are designed, handled and applied in a manner that will safely meet your treatment objectives. Our staff is available to support your application requirements, which can include on-site service, site surveys, PSSR, PHA, commissioning, laboratory analysis, and logistics.

Who We Serve

We supply PurDOX™ to a variety of industrial plants and municipal water facilities to help address:

  • Regulatory compliance issues for an existing water disinfection system
  • Microbial issues where bleach or chlorine is no longer effective
  • Opportunities to replace bleach or chlorine for large volume water disinfection
  • Treating effluents for odors and/or contaminants found in industrial processes

Case Study

Municipal Plant Uses Sodium Chlorate/Hydrogen Peroxide Precursor for Chlorine Dioxide Production

municipal sodium chlorate plant
Read Case Study

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