PlainEnviro

EPA TRI Chemical

1,4-Dichlorobenzene

CAS Number: 106-46-7

Total releases
138.7K lbs
Number of facilities
22
Carcinogen
Yes
PBT substance
No
Verify at EPA TRI →
Carcinogen

According to the EPA Toxics Release Inventory, 1,4-Dichlorobenzene (CAS 106-46-7) is disclosed by 22 Form R facilities totaling 138.7K lbs of reported releases. The TRI extract marks this chemical with a carcinogen classification flag. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.

View saved records

1,4-Dichlorobenzene (CAS 106-46-7) 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.

The carcinogen flag above reflects an assessment from EPA, the International Agency for Research on Cancer, or the National Toxicology Program, not a TRI-specific determination. The largest individual disclosure in the current dataset comes from FORTRON INDUSTRIES LLC in NC at 101.4K 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

1,4-Dichlorobenzene: how the 138.7K lbs splits

138.7K lbs across all reported pathways

  • Air Releases134.3K lbs96.8%
  • Off-site Transfers3.3K lbs2.4%
  • Land Disposal1.1K lbs0.8%
  • Water Discharges25 lbs<0.1%

1,4-Dichlorobenzene's 138.7K lbs Form-R total is AIR, with air releases making up 96.8% of the bar. Next segment: off-site transfers at 2.4%.

Trend & Where It's Reported

Reported Release Trend

Between 2019 and 2023, cumulative annual 1,4-Dichlorobenzene releases across all reporting facilities increased by 6% (26.2K lbs → 27.8K lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.

Geographic Concentration

Reporting for 1,4-Dichlorobenzene is highly concentrated: North Carolina accounts for 73.1% of the reported total (1 facility). Next: Texas.

  • North Carolina 101.4K lbs
  • Texas 31.7K lbs
  • Arkansas 2.6K lbs
  • Missouri 1.4K lbs
  • Nebraska 431 lbs
Industry Sources

Reporting for 1,4-Dichlorobenzene is highly concentrated by industry: Chemicals facilities account for 97.3% of the reported total (10 facilities). Next: Hazardous Waste.

  • Chemicals 134.9K lbs
  • Hazardous Waste 3.8K lbs
  • Nonmetallic Mineral Product 14 lbs

Which facilities release the most of this chemical?

Facilities with the largest reported releases of 1,4-Dichlorobenzene. Up to 50 shown.

# Facility Release (lbs)
1 Fortron Industries LLC
101.4K lbs
2 Solvay Specialty Polymers USA
31.0K lbs
3 Clean Harbors el Dorado LLC
2.6K lbs
4 Willert Home Products
1.3K lbs
5 Clean Harbors Deer Park LLC
613 lbs
6 Clean Harbors Environmental Services Inc
431 lbs
7 Westlake Vinyls Inc
375 lbs
8 Rubicon LLC
331 lbs
9 Fresh Products LLC
270 lbs
10 Dap Global Inc.
149 lbs
11 Veolia Es Technical Solutions LLC Port Arthur Facility
41 lbs
12 Shintech Plaquemine Plant
40 lbs
13 Safety-Kleen Systems Inc.
34 lbs
14 Heritage Thermal Services
17 lbs
15 Norlite LLC
14 lbs
16 Clean Harbors Aragonite LLC
5 lbs
17 Covestro LLC
4 lbs
18 Veolia N.a. Inc.
3 lbs
19 Reworld Tron Corp
0 lbs
20 Arcwood Environmental - Orange LLC
0 lbs
21 Ross Incineration Services Inc
0 lbs
22 Kor-Chem Inc
0 lbs

Frequently Asked Questions

What is 1,4-Dichlorobenzene in the EPA TRI? ▼
1,4-Dichlorobenzene (CAS Number: 106-46-7) is a chemical tracked by the EPA Toxic Release Inventory (TRI) program. The TRI extract marks it with a carcinogen classification flag based on EPA/IARC/NTP listings. 22 facilities in the United States report releasing this chemical to the EPA.
How much 1,4-Dichlorobenzene is disclosed in U.S. TRI filings? ▼
U.S. facilities have reported a total of 138.7K lbs of 1,4-Dichlorobenzene releases to the EPA Toxic Release Inventory across 22 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 1,4-Dichlorobenzene? ▼
1,4-Dichlorobenzene carries a carcinogen classification flag in the TRI database (drawn from EPA, IARC, or NTP listings). 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 1,4-Dichlorobenzene? ▼
Fortron Industries LLC in NC reports the largest disclosed release of 1,4-Dichlorobenzene in this dataset, at 101.4K lbs. Most reporting facilities for this chemical fall under chemicals. Release data is self-reported annually to the EPA under the TRI program. View the full list of 22 facilities on this page.
What is the CAS number for 1,4-Dichlorobenzene? ▼
The CAS (Chemical Abstracts Service) Registry Number for 1,4-Dichlorobenzene is 106-46-7. 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.

Related Guides

Understanding TRI Data
How the Toxic Release Inventory works
Biggest Polluters in America
Which facilities release the most toxics
How to Check Environmental Quality
Step-by-step guide to checking your local environment

Health Information

Carcinogen Classification: This chemical is classified as a known or suspected carcinogen by the EPA under the Toxic Release Inventory program. This classification is based on evaluations by agencies including the International Agency for Research on Cancer (IARC), the National Toxicology Program (NTP), and the EPA itself.

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

Browse all → | Rankings →
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.