EPA TRI Chemical

Ethylidene Dichloride

CAS Number: 75-34-3

Total releases
56.5K lbs
Number of facilities
19
Carcinogen
No
PBT substance
No
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According to the EPA Toxics Release Inventory, Ethylidene Dichloride (CAS 75-34-3) is disclosed by 19 Form R facilities totaling 56.5K lbs of reported releases. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.

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Ethylidene Dichloride (CAS 75-34-3) 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 WESTLAKE US 2 LLC in LA at 42.6K 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

Ethylidene Dichloride: how the 56.5K lbs splits

56.5K lbs across all reported pathways

  • Air Releases55.2K lbs97.8%
  • Water Discharges1.2K lbs2.2%
  • Off-site Transfers31 lbs0.1%
  • Land Disposal0 lbs<0.1%

Ethylidene Dichloride's 56.5K lbs Form-R total is AIR, with air releases making up 97.8% of the bar. Next segment: water discharges at 2.2%.

Trend & Where It's Reported

Reported Release Trend

Between 2019 and 2023, cumulative annual Ethylidene Dichloride releases across all reporting facilities increased by 78% (7.2K lbs → 12.8K lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.

Geographic Concentration

Reporting for Ethylidene Dichloride is highly concentrated: Louisiana accounts for 93.1% of the reported total (7 facilities). Next: Texas.

  • Louisiana 52.5K lbs
  • Texas 2.8K lbs
  • Kentucky 782 lbs
  • Arkansas 329 lbs
  • South Carolina 9 lbs
Industry Sources

Reporting for Ethylidene Dichloride is highly concentrated by industry: Electric Utilities facilities account for 75.4% of the reported total (1 facility). Next: Chemicals.

  • Electric Utilities 42.6K lbs
  • Chemicals 13.5K lbs
  • Nonmetallic Mineral Product 343 lbs
  • Hazardous Waste 35 lbs

Which facilities release the most of this chemical?

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

# Facility Release (lbs)
1 Westlake US 2 LLC
42.6K lbs
2 Formosa Plastics Corp Louisiana
6.7K lbs
3 Formosa Plastics Corp Texas
1.7K lbs
4 Oxy Vinyls LP la Porte Vcm Plant
1.0K lbs
5 Occidental Chemical Holding Corp - Geismar Plant
834 lbs
6 Westlake Vinyls Co
795 lbs
7 Westlake Vinyls Inc
782 lbs
8 Westlake Chemicals & Vinyls LLC
741 lbs
9 Shintech Plaquemine Plant
634 lbs
10 Ash Grove Cement
329 lbs
11 Westlake Chemicals & Vinyls LLC
277 lbs
12 Freeport_olin Bc
45 lbs
13 Veolia Es Technical Solutions LLC Port Arthur Facility
23 lbs
14 Oxy Vinyls LP Deer Park-Vcm Plant
9 lbs
15 Holcim (us) Inc Holly Hill Plant
9 lbs
16 Clean Harbors Aragonite LLC
7 lbs
17 Norlite LLC
5 lbs
18 Clean Harbors Deer Park LLC
4 lbs
19 Heritage Thermal Services
0 lbs

Frequently Asked Questions

What is Ethylidene Dichloride in the EPA TRI?
Ethylidene Dichloride (CAS Number: 75-34-3) is a chemical tracked by the EPA Toxic Release Inventory (TRI) program. It is not marked as a carcinogen in the TRI classification set. 19 facilities in the United States report releasing this chemical to the EPA.
How much Ethylidene Dichloride is disclosed in U.S. TRI filings?
U.S. facilities have reported a total of 56.5K lbs of Ethylidene Dichloride releases to the EPA Toxic Release Inventory across 19 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 Ethylidene Dichloride?
Ethylidene Dichloride 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 Ethylidene Dichloride?
Westlake US 2 LLC in LA reports the largest disclosed release of Ethylidene Dichloride in this dataset, at 42.6K lbs. Most reporting facilities for this chemical fall under electric utilities. Release data is self-reported annually to the EPA under the TRI program. View the full list of 19 facilities on this page.
What is the CAS number for Ethylidene Dichloride?
The CAS (Chemical Abstracts Service) Registry Number for Ethylidene Dichloride is 75-34-3. 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.

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

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.