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EPA TRI Chemical

1,4-Dichloro-2-Butene

CAS Number: 764-41-0

Total releases
28.5K lbs
Number of facilities
4
Carcinogen
No
PBT substance
No
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According to the EPA Toxics Release Inventory, 1,4-Dichloro-2-Butene (CAS 764-41-0) is disclosed by 4 Form R facilities totaling 28.5K lbs of reported releases. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.

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1,4-Dichloro-2-Butene (CAS 764-41-0) 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 DENKA PERFORMANCE ELASTOMER LLC in LA at 28.5K 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

1,4-Dichloro-2-Butene: how the 28.5K lbs splits

28.5K lbs across all reported pathways

  • Land Disposal16.5K lbs58.0%
  • Air Releases11.5K lbs40.2%
  • Water Discharges349 lbs1.2%
  • Off-site Transfers155 lbs0.5%

1,4-Dichloro-2-Butene's 28.5K lbs Form-R total is MIXED, with land disposal making up 58.0% of the bar. Next segment: air releases at 40.2%.

Trend & Where It's Reported

Reported Release Trend

Between 2019 and 2023, cumulative annual 1,4-Dichloro-2-Butene releases across all reporting facilities increased by 11% (5.4K lbs → 6.0K lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.

Geographic Concentration

Reporting for 1,4-Dichloro-2-Butene is highly concentrated: Louisiana accounts for 100.0% of the reported total (3 facilities). Next: Ohio.

  • Louisiana 28.5K lbs
  • Ohio 0 lbs
Industry Sources

Reporting for 1,4-Dichloro-2-Butene is highly concentrated by industry: Chemicals facilities account for 100.0% of the reported total (3 facilities). Next: Hazardous Waste.

  • Chemicals 28.5K lbs
  • Hazardous Waste 0 lbs

Which facilities release the most of this chemical?

Facilities with the largest reported releases of 1,4-Dichloro-2-Butene. Up to 50 shown.

# Facility Release (lbs)
1 Denka Performance Elastomer LLC
28.5K lbs
2 Westlake Chemicals & Vinyls LLC
5 lbs
3 Heritage Thermal Services
0 lbs
4 Westlake Chemicals & Vinyls LLC
0 lbs

Frequently Asked Questions

What is 1,4-Dichloro-2-Butene in the EPA TRI? ▼
1,4-Dichloro-2-Butene (CAS Number: 764-41-0) 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 1,4-Dichloro-2-Butene is disclosed in U.S. TRI filings? ▼
U.S. facilities have reported a total of 28.5K lbs of 1,4-Dichloro-2-Butene 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 1,4-Dichloro-2-Butene? ▼
1,4-Dichloro-2-Butene 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 1,4-Dichloro-2-Butene? ▼
Denka Performance Elastomer LLC in LA reports the largest disclosed release of 1,4-Dichloro-2-Butene in this dataset, at 28.5K 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 4 facilities on this page.
What is the CAS number for 1,4-Dichloro-2-Butene? ▼
The CAS (Chemical Abstracts Service) Registry Number for 1,4-Dichloro-2-Butene is 764-41-0. 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.