PlainEnviro

EPA TRI Chemical

Hexachloroethane

CAS Number: 67-72-1

Total releases
9.1K lbs
Number of facilities
27
Carcinogen
Yes
PBT substance
No
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Carcinogen

According to the EPA Toxics Release Inventory, Hexachloroethane (CAS 67-72-1) is disclosed by 27 Form R facilities totaling 9.1K 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.

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Hexachloroethane (CAS 67-72-1) 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.

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 OCCIDENTAL CHEMICAL HOLDING CORP - GEISMAR PLANT in LA at 2.5K 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.

MIXED pathway mix

Hexachloroethane: how the 9.1K lbs splits

9.1K lbs across all reported pathways

  • Air Releases5.8K lbs64.5%
  • Off-site Transfers2.1K lbs22.9%
  • Land Disposal1.0K lbs11.5%
  • Water Discharges95 lbs1.0%

Hexachloroethane's 9.1K lbs Form-R total is MIXED, with air releases making up 64.5% of the bar. Next segment: off-site transfers at 22.9%.

Trend & Where It's Reported

Reported Release Trend

Between 2019 and 2023, cumulative annual Hexachloroethane releases across all reporting facilities increased by 55% (1.5K lbs → 2.3K lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.

Geographic Concentration

Reporting for Hexachloroethane is highly concentrated: Louisiana accounts for 59.8% of the reported total (5 facilities). Next: Texas.

  • Louisiana 5.4K lbs
  • Texas 1.4K lbs
  • Kansas 1.1K lbs
  • Arkansas 1.0K lbs
  • Missouri 63 lbs
Industry Sources

Reporting for Hexachloroethane is highly concentrated by industry: Chemicals facilities account for 65.9% of the reported total (14 facilities). Next: Electric Utilities.

  • Chemicals 6.0K lbs
  • Electric Utilities 1.7K lbs
  • Hazardous Waste 1.4K lbs
  • Nonmetallic Mineral Product 54 lbs
  • Other 2 lbs

Which facilities release the most of this chemical?

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

# Facility Release (lbs)
1 Occidental Chemical Holding Corp - Geismar Plant
2.5K lbs
2 Westlake US 2 LLC
1.7K lbs
3 Occidental Chemical Corp
1.1K lbs
4 Clean Harbors el Dorado LLC
1.0K lbs
5 Westlake Chemicals & Vinyls LLC
906 lbs
6 Freeport_olin Bc
680 lbs
7 Blue Cube Operations LLC - Plaquemine Site
371 lbs
8 The Chemours Co
362 lbs
9 Clean Harbors Deer Park LLC
241 lbs
10 Buzzi Unicem Usa-Cape Girardeau
51 lbs
11 Clean Harbors Environmental Services Inc
42 lbs
12 Anderson Development Co
33 lbs
13 Oxy Vinyls LP la Porte Vcm Plant
32 lbs
14 Westlake Vinyls Inc
25 lbs
15 Dow Chemical Co Freeport Facility
18 lbs
16 Veolia Es Technical Solutions LLC Port Arthur Facility
13 lbs
17 Ebv Explosives Environmental Co
12 lbs
18 Oxy Vinyls LP Deer Park-Vcm Plant
8 lbs
19 Heidelberg Materials US Cement LLC
3 lbs
20 US Army Fort Irwin National Training Center
2 lbs
21 Clean Harbors Aragonite LLC
1 lbs
22 Heritage Thermal Services
1 lbs
23 Occidental Chemical Corp
0 lbs
24 Norlite LLC
0 lbs
25 Corteva Freeport Operations
0 lbs
26 Westlake Chemicals & Vinyls LLC
0 lbs
27 Superior Signal Co LLC
0 lbs

Frequently Asked Questions

What is Hexachloroethane in the EPA TRI? ▼
Hexachloroethane (CAS Number: 67-72-1) 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. 27 facilities in the United States report releasing this chemical to the EPA.
How much Hexachloroethane is disclosed in U.S. TRI filings? ▼
U.S. facilities have reported a total of 9.1K lbs of Hexachloroethane releases to the EPA Toxic Release Inventory across 27 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 Hexachloroethane? ▼
Hexachloroethane 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 Hexachloroethane? ▼
Occidental Chemical Holding Corp - Geismar Plant in LA reports the largest disclosed release of Hexachloroethane in this dataset, at 2.5K 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 27 facilities on this page.
What is the CAS number for Hexachloroethane? ▼
The CAS (Chemical Abstracts Service) Registry Number for Hexachloroethane is 67-72-1. 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.

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.

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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.