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EPA TRI Chemical

Hexabromocyclododecane

EPA TRI Category Code: N270

Total releases
166.8K lbs
Number of facilities
5
Carcinogen
No
PBT substance
Yes
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PBT

According to the EPA Toxics Release Inventory, Hexabromocyclododecane (EPA TRI Category Code N270) is disclosed by 5 Form R facilities totaling 166.8K lbs of reported releases. It is also listed as a persistent bioaccumulative toxicant (PBT) in the TRI extract. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.

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Hexabromocyclododecane (EPA TRI Category Code N270) 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 PBT (persistent, bioaccumulative, toxic) status above carries a lower TRI reporting threshold than most listed chemicals, reflecting elevated regulatory concern about long-term environmental buildup. The largest individual disclosure in the current dataset comes from EQ DETROIT INC in MI at 127.8K 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.

OFFSITE pathway mix

Hexabromocyclododecane: how the 166.8K lbs splits

166.8K lbs across all reported pathways

  • Off-site Transfers127.1K lbs76.2%
  • Land Disposal38.4K lbs23.0%
  • Air Releases1.3K lbs0.8%

Hexabromocyclododecane's 166.8K lbs Form-R total is OFFSITE, with off-site transfers making up 76.2% of the bar. Next segment: land disposal at 23.0%.

Trend & Where It's Reported

Reported Release Trend

Between 2019 and 2023, cumulative annual Hexabromocyclododecane releases across all reporting facilities decreased by 99% (132.3K lbs → 2.0K lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.

Geographic Concentration

Reporting for Hexabromocyclododecane is highly concentrated: Michigan accounts for 76.7% of the reported total (1 facility). Next: Texas.

  • Michigan 127.8K lbs
  • Texas 38.4K lbs
  • Iowa 269 lbs
  • Oregon 128 lbs
  • New York 120 lbs
Industry Sources

Reporting for Hexabromocyclododecane is highly concentrated by industry: Other facilities account for 76.7% of the reported total (1 facility). Next: Hazardous Waste.

  • Other 127.8K lbs
  • Hazardous Waste 38.4K lbs
  • Plastics and Rubber 397 lbs
  • Chemicals 120 lbs

Which facilities release the most of this chemical?

Facilities with the largest reported releases of Hexabromocyclododecane. Up to 50 shown.

# Facility Release (lbs)
1 Eq Detroit Inc
127.8K lbs
2 US Ecology Texas Inc
38.4K lbs
3 Leviat
269 lbs
4 Leviat
128 lbs
5 Indium Corp of America
120 lbs

Frequently Asked Questions

What is Hexabromocyclododecane in the EPA TRI? ▼
Hexabromocyclododecane (EPA TRI Category Code: N270) is a chemical tracked by the EPA Toxic Release Inventory (TRI) program. It is not marked as a carcinogen in the TRI classification set. It is classified as a persistent bioaccumulative toxicant (PBT) in the TRI extract. 5 facilities in the United States report releasing this chemical to the EPA.
How much Hexabromocyclododecane is disclosed in U.S. TRI filings? ▼
U.S. facilities have reported a total of 166.8K lbs of Hexabromocyclododecane releases to the EPA Toxic Release Inventory across 5 facilities. Release quantities are self-reported estimates covering air, water, land, and off-site transfers. They are disclosure totals, not toxicity-weighted harm scores.
How does EPA TRI classify Hexabromocyclododecane? ▼
Hexabromocyclododecane is not marked as a carcinogen in the TRI classification set. It is also listed as a persistent bioaccumulative toxicant (PBT), which uses lower TRI reporting thresholds. TRI classification flags document inventory listing status; they are not a site-specific exposure or health diagnosis. For health-effect summaries see EPA IRIS and ATSDR toxicological profiles.
Which facilities disclose the most Hexabromocyclododecane? ▼
Eq Detroit Inc in MI reports the largest disclosed release of Hexabromocyclododecane in this dataset, at 127.8K lbs. Most reporting facilities for this chemical fall under other. Release data is self-reported annually to the EPA under the TRI program. View the full list of 5 facilities on this page.
Why is Hexabromocyclododecane listed under code N270 instead of a CAS number? ▼
N270 is an EPA TRI Category Code, not a CAS Registry Number. EPA assigns category codes (N-prefix and K-prefix) to chemical groups that share reporting requirements, for example, "Hexabromocyclododecane" covers many distinct compounds aggregated for TRI reporting. Individual constituents may have their own CAS Registry Numbers (e.g., elemental Lead is CAS 7439-92-1), but the group is reported under the single TRI Category Code.

Related Guides

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How to Check Environmental Quality
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Health Information

Persistent Bioaccumulative Toxicant (PBT): This chemical is classified as a PBT by the EPA. PBT chemicals are toxic, persist in the environment, and bioaccumulate in food chains. Because of these properties, even relatively small releases can pose a significant threat to human health and the environment over time.

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.

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Data sourced from the U.S. Environmental Protection Agency (EPA). See our methodology for details. Retrieved and formatted by PlainEnviro

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.