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EPA TRI Chemical

1,3-Dichlorobenzene

CAS Number: 541-73-1

Total releases
73 lbs
Number of facilities
4
Carcinogen
No
PBT substance
No
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According to the EPA Toxics Release Inventory, 1,3-Dichlorobenzene (CAS 541-73-1) is disclosed by 4 Form R facilities totaling 73 lbs of reported releases. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.

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1,3-Dichlorobenzene (CAS 541-73-1) 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 SAFETY-KLEEN SYSTEMS INC. in KY at 61 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

1,3-Dichlorobenzene: how the 73 lbs splits

73 lbs across all reported pathways

  • Air Releases73 lbs100.0%

1,3-Dichlorobenzene's 73 lbs Form-R total is AIR, with air releases making up 100.0% of the bar. Off-site transfers stay separate from air, water, and land releases.

Trend & Where It's Reported

Reported Release Trend

Between 2019 and 2023, cumulative annual 1,3-Dichlorobenzene releases across all reporting facilities decreased by 100% (3 lbs → 0 lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.

Geographic Concentration

Reporting for 1,3-Dichlorobenzene is highly concentrated: Kentucky accounts for 83.6% of the reported total (1 facility). Next: Texas.

  • Kentucky 61 lbs
  • Texas 12 lbs
  • Ohio 0 lbs
  • Louisiana 0 lbs
Industry Sources

Reporting for 1,3-Dichlorobenzene is highly concentrated by industry: Hazardous Waste facilities account for 100.0% of the reported total (3 facilities). Next: Chemicals.

  • Hazardous Waste 73 lbs
  • Chemicals 0 lbs

Which facilities release the most of this chemical?

Facilities with the largest reported releases of 1,3-Dichlorobenzene. Up to 50 shown.

# Facility Release (lbs)
1 Safety-Kleen Systems Inc.
61 lbs
2 Veolia Es Technical Solutions LLC Port Arthur Facility
12 lbs
3 Heritage Thermal Services
0 lbs
4 Shintech Plaquemine Plant
0 lbs

Frequently Asked Questions

What is 1,3-Dichlorobenzene in the EPA TRI? ▼
1,3-Dichlorobenzene (CAS Number: 541-73-1) is a chemical tracked by the EPA Toxic Release Inventory (TRI) program. It is not marked as a carcinogen in the TRI classification set. 4 facilities in the United States report releasing this chemical to the EPA.
How much 1,3-Dichlorobenzene is disclosed in U.S. TRI filings? ▼
U.S. facilities have reported a total of 73 lbs of 1,3-Dichlorobenzene releases to the EPA Toxic Release Inventory across 4 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 1,3-Dichlorobenzene? ▼
1,3-Dichlorobenzene is not marked as a carcinogen in the TRI classification set. 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 1,3-Dichlorobenzene? ▼
Safety-Kleen Systems Inc. in KY reports the largest disclosed release of 1,3-Dichlorobenzene in this dataset, at 61 lbs. Most reporting facilities for this chemical fall under hazardous waste. Release data is self-reported annually to the EPA under the TRI program. View the full list of 4 facilities on this page.
What is the CAS number for 1,3-Dichlorobenzene? ▼
The CAS (Chemical Abstracts Service) Registry Number for 1,3-Dichlorobenzene is 541-73-1. CAS numbers are unique numerical identifiers assigned to every chemical substance described in the open scientific literature. This identifier is used to search scientific databases and regulatory filings.

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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.

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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.