EPA TRI Chemical
Chlorine Dioxide
CAS Number: 10049-04-4
- Total releases
- 3.6M lbs
- Number of facilities
- 116
- Carcinogen
- No
- PBT substance
- No
According to the EPA Toxics Release Inventory, Chlorine Dioxide (CAS 10049-04-4) is disclosed by 116 Form R facilities totaling 3.6M lbs of reported releases. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.
Chlorine Dioxide (CAS 10049-04-4) is a chemical tracked by the EPA Toxics Release Inventory (TRI) program under Section 313 of the Emergency Planning and Community Right-to-Know Act. The TRI requires industrial facilities above specified threshold quantities to disclose annual manufacturing, processing, and otherwise-used volumes, along with quantities released to air, water, land, and off-site transfers.
A carcinogen flag, when present on other chemicals in this database, reflects an assessment from EPA, IARC, or the National Toxicology Program rather than a TRI-specific determination. The largest individual disclosure in the current dataset comes from INTERNATIONAL PAPER RIEGELWOOD MILL in NC at 744.3K lbs.
TRI volumes are self-reported estimates, not measured stack emissions, and each pound counts equally regardless of chemical toxicity, so total pounds should not be equated with total risk. Inclusion of a chemical or facility in the TRI does not itself establish a health hazard; it documents the public right-to-know record. Consult EPA's IRIS (Integrated Risk Information System) and the Agency for Toxic Substances and Disease Registry for health-effect summaries.
AIR pathway mix
Chlorine Dioxide: how the 3.6M lbs splits
3.6M lbs across all reported pathways
- Air Releases2.6M lbs72.0%
- Land Disposal1.0M lbs28.0%
- Off-site Transfers258 lbs<0.1%
Chlorine Dioxide's 3.6M lbs Form-R total is AIR, with air releases making up 72.0% of the bar. Next segment: land disposal at 28.0%.
Trend & Where It's Reported
Between 2019 and 2023, cumulative annual Chlorine Dioxide releases across all reporting facilities decreased by 6% (757.0K lbs → 710.1K lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.
Reporting for Chlorine Dioxide is concentrated: North Carolina accounts for 32.7% of the reported total (9 facilities). Next: Georgia.
- North Carolina 1.2M lbs
- Georgia 468.8K lbs
- South Carolina 276.5K lbs
- Ohio 269.0K lbs
- Virginia 230.7K lbs
Reporting for Chlorine Dioxide is highly concentrated by industry: Paper facilities account for 71.2% of the reported total (70 facilities). Next: Food.
- Paper 2.6M lbs
- Food 1.0M lbs
- Electric Utilities 28.6K lbs
- Chemicals 2.9K lbs
- Primary Metals 317 lbs
Which facilities release the most of this chemical?
Facilities with the largest reported releases of Chlorine Dioxide. Up to 50 shown.
Frequently Asked Questions
What is Chlorine Dioxide in the EPA TRI? ▼
How much Chlorine Dioxide is disclosed in U.S. TRI filings? ▼
How does EPA TRI classify Chlorine Dioxide? ▼
Which facilities disclose the most Chlorine Dioxide? ▼
What is the CAS number for Chlorine Dioxide? ▼
Health Information
Data comes from the EPA Toxic Release Inventory (TRI) program. Release quantities are self-reported by facilities and may represent estimates. The total shown aggregates reports across all facilities and reporting years.
PlainEnviro presents this data without advocacy framing. The presence of a chemical in the TRI database does not by itself indicate a health risk at current exposure levels. For health-related questions about specific chemical exposures, consult your local health agency or a toxicologist.
Related
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the EPA Toxic Release Inventory (TRI). Consult a qualified professional before making decisions based on this data.
Read our methodology - how this data is sourced, computed, and verified.